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Ribeiro, US

Aldemaro Ribeiro, Las Vegas, NV US

Patent application numberDescriptionPublished
20140101692INTERACTIVE VIDEO SYSTEM - This application discloses a system and method for the delivery of television programming comprising of: a video source connected to a subscriber network to transport a primary video signal; a message source connected to said subscriber network to transport a supplemental video signal; wherein the primary and supplemental video signals are combined to display the primary and supplemental video signals concurrently. In an exemplary embodiment of the invention, the subscriber receives discounts relative to the amount of supplemental video signal that is viewed by the subscriber.04-10-2014

Antonio Jose Fernandes Ribeiro, Deerfield Beach, FL US

Patent application numberDescriptionPublished
20130000343Refrigerated Merchandise Display System - A refrigerated merchandise display system for storing and dispensing merchandise. The merchandise display system includes an outer housing, an inner support, a transparent front door, a refrigeration unit, a front door assembly, and a plurality of windows. The merchandise display system further includes a plurality of shelves for supporting merchandise within the display system. The refrigeration unit may be positioned at the top of the merchandise display system and may be removable. The outer housing of the refrigeration unit may be manufactured in a variety of colors. Each of the colors may be indicative a type of merchandise stored within the merchandise display system.01-03-2013
20130002099Modular Refrigerated Merchandise Display System - A merchandise display system including one or more display units. The merchandise display system may include a base unit having a refrigeration unit that cools one or more display units. The refrigeration unit may be removable from the base unit. The one or more display units may attach to another display unit or a base unit. The display units may be stackable on top of one another or may abut the back side of another display unit. The display units may also be configured to attach to the base unit. The one or more display units may include a plurality of shelves and one or more doors, which allow access to display units.01-03-2013

Bilberto Medeiros Ribeiro, Menlo Park, CA US

Patent application numberDescriptionPublished
20110279135MEMRISTOR ADJUSTMENT USING STORED CHARGE - Methods and apparatus pertaining to memory resistors are provided. Electronic circuitry determines energy for changing a non-volatile resistance of a memristor from a present value to a target value. An electric charge corresponding to the energy is stored. An electric pulse is applied to the memristor using the stored charge. The newly adjusted resistance of the memristor is sensed and compared to the target value. Additional electric pulses can be applied in accordance with the comparison. Memristor adjustment by way of feedback control is thus contemplated by the present teachings.11-17-2011

Carlos E. Ribeiro, Tracy, CA US

Patent application numberDescriptionPublished
20100052708Tester for RF Devices - For testing an RF device, such as an RF receiver/decoder chip that receives an RF signal via an antenna terminal and outputs a digital code at an output terminal, an inexpensive non-RF programmable tester is used. The programmable tester is a commercially available tester that need only generate and receive non-RF digital and analog signals. The RF signals needed for the testing of the RF device are totally supplied by RF generators on a single printed circuit board, external to the commercial tester housing. The board contains controllable RF generating circuitry whose possible output amplitudes and frequencies need be only those necessary for testing the particular DUT. The frequencies may be changed by switching in different crystal resonators mounted on the board.03-04-2010

Carmo Ribeiro, Ann Arbor, MI US

Patent application numberDescriptionPublished
20100218673PISTON WITH CENTRAL DIRECTIONAL OIL FLOW AND WRIST PIN LUBRICATION FEATURE AND METHOD OF CONSTRUCTION THEREOF - A piston has a piston body extending along a central axis. The piston body has an upper crown portion and a lower crown portion. The upper crown portion has an upper combustion wall and an at least one annular upper rib depending from the upper combustion wall to a free end. The lower crown portion has at least one annular lower rib extending to a free end that is fixed to the at least one upper rib and an inner gallery floor extending radially inwardly relative to the at least one lower rib. The upper crown portion has an upper post depending from the upper combustion wall along the central axis to a free end. The lower crown portion has a lower post extending upwardly from the inner gallery floor along the central axis to a free. Together, the upper post and the lower post form a labyrinth passage.09-02-2010
20110146074REINFORCED DUAL GALLERY PISTON AND METHOD OF CONSTRUCTION - A method of friction welding a piston includes forming a piston body by friction welding an upper crown portion to a lower crown portion. At least one of the upper or lower crown portions is provided with a central support post extending along a central axis. The upper and lower crown portions have annular ribs radially outwardly from the central support post, with the ribs being aligned with one another. The method includes initiating a friction weld joint between a free end of the central support post and a corresponding surface opposite the free end of the central support post. Then, after initiating the weld joint between the central support post and the opposite surface, the method continues by then initiating a friction weld joint between aligned free ends of the ribs. Then, the friction weld joints are completed.06-23-2011
20120260882PISTON AND METHOD OF MAKING A PISTON - A one-piece piston including a combustion bowl which is cast to its final form and includes at least one irregularity spaced from a central axis. The piston is initially fabricated of an upper crown member and a lower crown member, which are joined together. The piston is then chucked into a machine tool, such as a CNC lathe, which locates either the piston's top surface or a portion of the combustion bowl and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston.10-18-2012
20130068094Piston, Method of Construction, and Piston Body Portions Thereof - A method of constructing a piston, piston formed thereby, and piston body portions are provided. The method includes providing an upper crown portion at least one annular upper rib depending from the upper combustion wall to a free end having a tapered peak. The method further includes providing a lower crown portion having at least one annular lower rib extending to a free end having a tapered peak. Then, moving the upper crown portion and the lower crown portion toward one another and initiating contact between the upper crown portion and the lower crown portion at their respective tapered peaks. Then, continuing moving the upper crown and the lower crown further toward one another after making initial contact at their respective tapered peaks and forming a friction weld joint between the free ends of the at least one upper rib and the at least one lower rib free end.03-21-2013
20140299091PISTON MADE USING ADDITIVE MANUFACTURING TECHNIQUES - A monobloc piston body for an internal combustion engine is provided. The piston body includes a first piece which includes a pair of skirt portions and a pair of pin bosses and a second piece which includes a crown portion with an upper combustion surface and an at least partially enclosed oil gallery. The first and second pieces are joined together at a joint that is located on a side of the oil gallery opposite of the upper combustion surface. The firs piece is made through casting or forging, and the second piece is made through an additive manufacturing process, such as direct metal laser sintering.10-09-2014

Patent applications by Carmo Ribeiro, Ann Arbor, MI US

Claudio Ribeiro, Houston, TX US

Patent application numberDescriptionPublished
20120277493Process to Recover Alcohol with Secondary Reactors for Hydrolysis of Acetal - A process for recovering ethanol obtained from the hydrogenation of acetic acid. The crude ethanol product is separated in a column to produce a distillate stream comprising acetaldehyde and ethyl acetate and a residue stream comprising ethanol, acetic acid and water. Acetal byproduct can be reduced or removed through configurations of hydrolysis secondary reactors. The ethanol product is recovered from the residue stream.11-01-2012
20120277494Process to Reduce Ethanol Recycled to Hydrogenation Reactor - The present invention is directed to processes for recovering ethanol obtained from the hydrogenation of acetic acid. Acetic acid is hydrogenated in the presence of a catalyst in a hydrogenation reactor to form a crude ethanol product. The crude ethanol product is separated in one or more columns to recover ethanol. In some embodiments, less than 10 wt. % ethanol is recycled to the hydrogenation reactor.11-01-2012
20120277496Process for Producing Ethanol and Reducing Acetic Acid Concentration - A process for producing ethanol and, in particular, to a process for reducing the concentration of acetic acid in a crude ethanol product by esterifying unreacted acetic acid with an alcohol.11-01-2012
20120277497Process to Recover Alcohol with Reduced Water From Overhead of Acid Column - A process for recovering ethanol obtained from the hydrogenation of acetic acid. The crude ethanol product is separated in a column to produce a distillate stream comprising acetaldehyde and ethyl acetate and a residue stream comprising ethanol, acetic acid, ethyl acetate and water. The ethanol product is recovered from the residue stream.11-01-2012
20130109891Process to Recover Alcohol with Secondary Reactors for Esterification of Acid05-02-2013
20150099905Process to Recover Alcohol with Reduced Water From Overhead of Acid Column - A process for recovering ethanol obtained from the hydrogenation of acetic acid. The crude ethanol product is separated in a column to produce a distillate stream comprising acetaldehyde and ethyl acetate and a residue stream comprising ethanol, acetic acid, ethyl acetate and water. The ethanol product is recovered from the residue stream.04-09-2015

Patent applications by Claudio Ribeiro, Houston, TX US

Claudio Santiago Ribeiro, Evanston, IL US

Patent application numberDescriptionPublished
20090126155Coupling assembly for a foldable electronic device - A foldable electronic device comprising a first and second housing element and a coupling assembly, including a linkage assembly and a biasing member, that directs the housing elements between a closed and a deployed orientation. The linkage assembly includes a plurality of adjacently disposed links collectively defining a first end and a second end. The first end is coupled to the first housing element and the second end is coupled to the second housing element. Each link is rotatably coupled to each adjacently disposed link and includes an outward limiting member limiting the relative rotation of adjacent links in an outward direction of rotation. The biasing member is coupled to the housing elements and outwardly biases the housing elements relative to each other to direct rotation of the housing elements toward the deployed orientation. The operable length of the biasing member changes as the housing elements are rotated toward the deployed orientation.05-21-2009
20100130271Slider Form Factor Devices and Methods for Morphing Indicia Visible through a Transparent Member - Disclosed are devices and methods of a slider form factor device having a transparent member supported by its sliding body, and a display module supported by its main body. The transparent member of the sliding body is on top of the display module of the main body in the open position and in the closed position. The transparent member is configured to transmit light received from the display module therethrough. The transparent member provides a morphing effect as light emitted by the display module providing indicia is transmitted through the transparent member, the indicia exhibited through the transparent member changing from first indicia to different indicia depending upon the mode of the device. In the open position, the lower portion of the display module can exhibit a keypad while the top portion of the display module can provide indicia visible through the transparent member of the sliding body.05-27-2010
20110007881Method and Device for Accessing Voicemail Commands - A communication device (01-13-2011

Patent applications by Claudio Santiago Ribeiro, Evanston, IL US

Durval Ribeiro, Owatonna, MN US

Patent application numberDescriptionPublished
20090072682Protective boot for an electronic device - A protective boot that protects a vehicle diagnostic device from damaging a vehicle to which is attached. The protective boot also helps to prevent the diagnostic device from being damaged when dropped from a distance off of the floor. The protective boot includes strap receiving members at various locations on the housing of the protective boot so that strapping members can be fed therethrough to attach the diagnostic device to the vehicle, such as a motorcycle. The protective boot also includes openings for access to controls or connections of the diagnostic device.03-19-2009

Patent applications by Durval Ribeiro, Owatonna, MN US

Flavio Emesto Ribeiro, Plainfield, IL US

Patent application numberDescriptionPublished
20110283920Mixtures of Zeolite and RAP/RAS - Embodiments of the invention provide method for preparing mixtures of natural or artificial zeolite with at least one of recycled asphalt shingles and recycled asphalt pavement. The prepared mixtures are also within the scope of the invention. Mixtures prepared as described herein may be useful, for example, for mixture with hot mix asphalt and cold patch asphalt.11-24-2011

Flavio Ernesto Ribeiro, Plainfield, IL US

Patent application numberDescriptionPublished
20120180702ZEOLITE AND WATER SLURRIES FOR ASPHALT CONCRETE PAVEMENT - Embodiments provide slurries of water and zeolite. These slurries have beneficial properties when mixed with asphalt. These beneficial properties may include extension of the asphalt as well as a decrease in the temperature used to process the cement. In some embodiments additional additives are included, such as anti-strip amines. Methods of making and using the slurries, as well as cement mixtures incorporating the slurries are also included herein.07-19-2012
20130000510ZEOLITE IMPREGNATED WITH TITANIUM DIOXIDE - Embodiments of the invention relate to methods for making and compositions including zeolite with an impregnated titanium dioxide. Such zeolite/titanium dioxide compositions may be useful, for example, as a substitute or extender for titanium dioxide used in coatings.01-03-2013
20130118378SILICA HYDROGEL IMPREGNATED WITH TiO2 AND METHOD OF MAKING SAME - Embodiments of the invention relate to methods and compositions for formation of silica-based hydrogels including titanium dioxide (TiO05-16-2013
20130180431ZEOLITE AND LIME COMBINATIONS FOR WARM MIX ASPHALT - Embodiments are presented herein that provide a filler that is a combination of zeolite and hydrated lime. Addition of this filler to asphalt is more beneficial than addition of either zeolite or hydrated lime alone. The beneficial properties of zeolite include a controlled release of moisture that aids mixture workability and the ability of the asphalt to effectively coat the aggregate particles. The mixture of zeolite and hydrated lime is easier to handle and integrate into a process than use of either compound alone, and it offers a number of other benefits.07-18-2013

Flavio Protasio Ribeiro, Redmond, WA US

Patent application numberDescriptionPublished
20140020484Input Device Sensor Configuration - Input device configurations are described. In one or more implementations, an input device includes a sensor substrate having one or more conductors and a flexible contact layer spaced apart from the sensor substrate. The flexible contact layer is configured to flex to contact the sensor substrate to initiate an input of a computing device. The flexible contact layer includes a force concentrator pad that is configured to cause pressure to be channeled through the force concentrator pad to cause the flexible contact layer to contact the sensor substrate to initiate the input.01-23-2014

Gilbert Medeiros Ribeiro, Palo Alto, CA US

Patent application numberDescriptionPublished
20120104345MEMRISTIVE DEVICES WITH LAYERED JUNCTIONS AND METHODS FOR FABRICATING THE SAME - Memristor systems and method for fabricating memristor system are disclosed. In one aspect, a memristor includes a first electrode, a second electrode, and a junction disposed between the first electrode and the second electrode. The junction includes at least one layer such that each layer has a plurality of dopant sub-layers disposed between insulating sub-layers. The sub-layers are oriented substantially parallel to the first and second electrodes.05-03-2012

Gilberto Ribeiro, Menlo Park, CA US

Patent application numberDescriptionPublished
20110051310Memcapacitive Devices - A memcapacitive device includes a first electrode having a first end and a second end and a second electrode. The device has a memcapacitive matrix interposed between the first electrode and the second electrode. The memcapacitive matrix has a non-linear capacitance with respect to a voltage across the first electrode and the second electrode. The memcapacitive matrix is configured to alter a signal applied on the first end by at least one of a) changing at least one of a rise-time and a fall-time of the signal and b) delaying the transmission of the signal based on the application of a programming voltage across the first electrode and the second electrode.03-03-2011
20110309321MEMRISTORS WITH A SWITCHING LAYER COMPRISING A COMPOSITE OF MULTIPLE PHASES - A memristor with a switching layer that includes a composite of multiple phases is disclosed. The memristor comprises: a first electrode; a second electrode spaced from the first electrode; and a switching layer positioned between the first electrode and the second electrode, the switching layer comprising the multi-phase composite system that comprises a first majority phase comprising a relatively insulating matrix of a switching material and a second minority phase comprising a relatively conducting material for forming at least one conducting channel in the switching layer during a fabrication process of the memristor. A method of making the memristor and a crossbar employing the memristor are also disclosed.12-22-2011
20120018698LOW-POWER NANOSCALE SWITCHING DEVICE WITH AN AMORPHOUS SWITCHING MATERIAL - A nanoscale switching device exhibits multiple desired properties including a low switching current level, being electroforming-free, and cycling endurance. The switching device has an active region disposed between two electrodes. The active region contains a switching material capable of transporting dopants under an electric field. The switching material is in an amorphous state and formed by deposition at or below room temperature.01-26-2012
20120030434Memory Device - A memory device includes a memory array and a memory controller for altering a performance characteristic of the memory array to increase a rate at which the memory device writes data in response to the memory device experiencing a demand for bandwidth above a threshold. A method for adjusting the performance characteristics of a memory device includes altering a performance characteristic of the memory device in response to the memory device experiencing a demand for bandwidth above a threshold. Altering the performance characteristic increases a rate at which the memory device writes data.02-02-2012
20120113706MEMRISTORS BASED ON MIXED-METAL-VALENCE COMPOUNDS - A memristor (05-10-2012
20120120714MEMORY RESISTOR HAVING MULTI-LAYER ELECTRODES - Methods and means related to memory resistors are provided. A memristor includes two multi-layer electrodes and an active material layer. One multi-layer electrode forms an Ohmic contact region with the active material layer. The other multi-layer electrode forms a Schottky barrier layer with the active material layer. The active material layer is subject to oxygen vacancy profile reconfiguration under the influence of an applied electric field. An electrical resistance of the memristor is thus adjustable by way of applied programming voltages and is non-volatile between programming events.05-17-2012
20120127780MEMORY RESISTOR ADJUSTMENT USING FEEDBACK CONTROL - Apparatus and methods related to memory resistors are provided. A feedback controller applies adjustment signals to a memristor. A non-volatile electrical resistance of the memristor is sensed by the feedback controller during the adjustment. The memristor is adjusted to particular values lying between first and second limiting values with minimal overshoot. Increased memristor service life, faster operation, lower power consumption, and higher operational integrity are achieved by the present teachings.05-24-2012
20120223286ELECTROFORMING-FREE NANOSCALE SWITCHING DEVICE - A nanoscale switching device is constructed such that an electroforming process is not needed to condition the device for normal switching operations. The switching device has an active region disposed between two electrodes. The active region has at least one switching layer formed of a switching material capable of transporting dopants under an electric field, and at least one conductive layer formed of a dopant source material containing dopants that can drift into the switching layer under an electric field. The switching layer has a thickness about 6 nm or less.09-06-2012
20130009128NANOSCALE SWITCHING DEVICE - A nanoscale switching device has an active region containing a switching material. The switching device has a first electrode and a second electrode with nanoscale widths, and the active region is disposed between the first and second electrodes. A protective cladding layer surrounds the active region. The protective cladding layer is formed of a cladding material unreactive to the switching material. An interlayer isolation layer formed of a dielectric material is disposed between the first and second electrodes and outside the protective cladding layer.01-10-2013
20130026440NANOSCALE SWITCHING DEVICES WITH PARTIALLY OXIDIZED ELECTRODES - A nanoscale switching device is provided. The device comprises: a first electrode of a nanoscale width; a second electrode of a nanoscale width; an active region disposed between the first and second electrodes, the active region having a non-conducting portion comprising an electronically semiconducting or nominally insulating and a weak ionic conductor switching material capable of carrying a species of dopants and transporting the dopants under an electric field and a source portion that acts as a source or sink for the dopants; and an oxide layer either formed on the first electrode, between the first electrode and the active region or formed on the second electrode, between the second electrode and the active region. A crossbar array comprising a plurality of the nanoscale switching devices is also provided. A process for making at least one nanoscale switching device is further provided.01-31-2013
20130112934NANOSCALE SWITCHING DEVICE - A nanoscale switching device has an active region disposed between two electrodes of nanoscale widths. The active region contains a switching material that carries mobile ionic dopants capable of being transported over the active region under an electric field to change a resistive state of the device. The switching material further carries immobile ionic dopants for inhibiting clustering of the mobile ionic dopants caused by switching cycles of the device. The immobile ionic dopants have a charge opposite in polarity to the charge of the mobile ionic dopants, and are less mobile under the electric field than the mobile ion dopants.05-09-2013
20130168629NANOSCALE SWITCHING DEVICE - A nanoscale switching device comprises a first electrode of a nanoscale width; a second electrode of a nanoscale width; an active region disposed between the first and second electrodes, the active region containing a switching material; an area within the active region that constrains current flow between the first electrode and the second electrode to a central portion of the active region; and an interlayer dielectric layer formed of a dielectric material and disposed between the first and second electrodes outside the active region. A nanoscale crossbar array and method of forming the nanoscale switching device are also disclosed.07-04-2013

Patent applications by Gilberto Ribeiro, Menlo Park, CA US

Gilberto M. Ribeiro, Palo Alto, CA US

Patent application numberDescriptionPublished
20130099187MULTILAYER STRUCTURE BASED ON A NEGATIVE DIFFERENTIAL RESISTANCE MATERIAL - A multilayer structure is disclosed that includes a conductive layer, a layer of a negative differential resistance (NDR) material disposed above the conductive layer, a layer M04-25-2013
20130106930PRINTHEAD ASSEMBLY INCLUDING MEMORY ELEMENTS05-02-2013
20140304467SHIFTABLE MEMORY EMPLOYING RING REGISTERS - Shiftable memory employs ring registers to shift a contiguous subset of data words stored in the ring registers within the shiftable memory. A shiftable memory includes a memory having built-in word-level shifting capability. The memory includes a plurality of ring registers to store data words. A contiguous subset of data words is shiftable between sets of the ring registers of the plurality from a first location to a second location within the memory. The contiguous subset of data words has a size that is smaller than a total size of the memory. The memory shifts only data words stored inside the contiguous subset when the contiguous subset is shifted.10-09-2014
20140313816SELECT DEVICE FOR CROSS POINT MEMORY STRUCTURES - The present disclosure provides a memory cell that includes a resistive memory element disposed between a first conductor and a second conductor, the first conductor and the second conductor configured to activate the resistive memory element. The memory cell also includes a backward diode disposed in series with the memory element between the memory element and either the first conductor or the second conductor.10-23-2014
20140313818METAL-INSULATOR PHASE TRANSITION FLIP-FLOP - A metal-insulator phase transition (MIT) flip-flop employs a selected one of a pair of bi-stable operating states to represent a logic state of the MIT flip-flop. The MIT flip-flop includes an MIT device having a current-controlled negative differential resistance (CC-NDR) to provide the pair of bi-stable operating states. A bi-stable operating state of the pair is capable of being selected by a programing voltage. Once the bi-stable operating state is selected, the bi-stable operating state is capable of being maintained by a bias voltage applied to the MIT device.10-23-2014

Gilberto Medairos Ribeiro, Mountain View, CA US

Patent application numberDescriptionPublished
20120112167NANOSCALE ELECTRONIC DEVICE - One example of the present invention is a nanoscale electronic device comprising a first conductive electrode, a second conductive electrode, and an anisotropic dielectric material layered between the first and second electrodes having a permittivity in a direction approximately that of the shortest distance between the first and second electrodes less than the permittivity in other directions within the anisotropic dielectric material. Additional examples of the present invention include integrated circuits that contain multiple nanoscale electronic devices that each includes an anisotropic dielectric material layered between first and second electrodes having a permittivity in a direction approximately that of the shortest distance between the first and second electrodes less than the permittivity in other directions within the anisotropic dielectric material.05-10-2012

Gilberto Medeiros Ribeiro, Palo Alto, CA US

Patent application numberDescriptionPublished
20120275211Reconfigurable Crossbar Memory Array - A two-dimensional array of switching devices comprises a plurality of crossbar tiles. Each crossbar tile has a plurality of row wire segments intersecting a plurality of column wire segments, and a plurality of switching devices each formed at an intersection of a row wire segment and a column wire segment. The array has a plurality of lateral latches disposed in a plane of the switching devices. Each lateral latch is linked to a first wire segment of a first crossbar tile and a second wire segment of a second crossbar tile opposing the first wire segment. The lateral latch is operable to close or open to form or break an electric connection between the first and second wire segments.11-01-2012
20130023106DEVICE HAVING MEMRISTIVE MEMORY01-24-2013
20130099872CHAOTIC OSCILLATOR-BASED RANDOM NUMBER GENERATION - Chaotic oscillator-based random number generation is described. In an example, a circuit includes a negative differential resistance (NDR) device to receive an alternating current (AC) bias. The circuit further includes a capacitance in parallel with the NDR device, the capacitance having a value such that, in response to a direct current (DC) bias applied to the NDR device and the capacitance, a voltage across the capacitance oscillates with a chaotic period. The circuit further includes a random number generator to generate random numbers using samples of the voltage across the capacitance.04-25-2013
20130106462Field-programmable analog array with memristors05-02-2013
20130106480METAL-INSULATOR TRANSITION LATCH05-02-2013
20130234103NANOSCALE SWITCHING DEVICE WITH AN AMORPHOUS SWITCHING MATERIAL - Nanoscale switching devices are disclosed. The devices have a first electrode of a nanoscale width; a second electrode of a nanoscale width; and a layer of an active region disposed between and in electrical contact with the first and second electrodes. The active region contains a switching material capable of carrying a significant amount of defects which can trap and de-trap electrons under electrical bias. The switching material is in an amorphous state. A nanoscale crossbar array containing a plurality of the devices and a method for making the devices are also disclosed.09-12-2013
20130242637Memelectronic Device - A memelectronic device may have a first and a second electrode spaced apart by a plurality of materials. A first material may have a memory characteristic exhibited by the first material maintaining a magnitude of an electrically controlled physical property after discontinuing an electrical stimulus on the first material. A second material may have an auxiliary characteristic.09-19-2013
20140003139MEMORY DEVICES WITH IN-BIT CURRENT LIMITERS01-02-2014
20140027705MEMRISTOR CELL STRUCTURES FOR HIGH DENSITY ARRAYS - A memristor array includes a lower layer of crossbars, upper layer of crossbars intersecting the lower layer of crossbars, memristor cells interposed between intersecting crossbars, and pores separating adjacent memristor cells. A method forming a memristor array is also provided.01-30-2014
20140029327BIPOLAR RESISTIVE SWITCH HEAT MITIGATION - A heat mitigated bipolar resistive switch includes a BRS matrix sandwiched between first and second electrodes and a heat mitigator. The BRS matrix is to support bipolar switching of a conduction channel formed between the first and second electrodes through BRS matrix. The heat mitigator is to reduce heat in the BRS matrix generated during bipolar switching. The heat mitigator includes one or both of a parallel-connected NDR element to limit current flowing in the BRS matrix and a high thermal conductivity material to conduct the generated heat away from the BRS matrix above a predetermined elevated temperature.01-30-2014
20140029328Storing Data in a Non-volatile Latch - Storing data in a non-volatile latch may include applying a bias voltage to a memristor pair in electrical communication with at least one logic gate and applying a gate voltage to a transmission gate to allow an input voltage to be applied to the at least one logic gate where the input voltage is greater than the bias voltage and the input voltage determines a resistance state of the memristor pair.01-30-2014
20140091270LOW ENERGY MEMRISTORS WITH ENGINEERED SWITCHING CHANNEL MATERIALS - Low energy memristors with engineered switching channel materials include: a first electrode; a second electrode; and a switching layer positioned between the first electrode and the second electrode, wherein the switching layer includes a first phase comprising an insulating matrix in which is dispersed a second phase comprising an electrically conducting compound material for forming a switching channel.04-03-2014
20140112059HIGH-RELIABILITY HIGH-SPEED MEMRISTOR - A memristor has a first electrode, a second electrode parallel to the first electrode, and a switching layer disposing between the first and second electrodes. The switching layer contains a conduction channel and a reservoir zone. The conduction channel has a Fermi glass material with a variable concentration of mobile ions. The reservoir zone is laterally disposed relative to the conduction channel, and functions as a source/sink of mobile ions for the conduction channel In the switching operation, under the cooperative driving force of both electric field and thermal effects, the mobile ions are moved into or out of the laterally disposed reservoir zone to vary the concentration of the mobile ions in the conduction channel to change the conductivity of the Fermi glass material.04-24-2014
20140158973NITRIDE-BASED MEMRISTORS - A nitride-based memristor memristor includes: a first electrode comprising a first nitride material; a second electrode comprising a second nitride material; and active region positioned between the first electrode and the second electrode. The active region includes an electrically semiconducting or nominally insulating and weak ionic switching nitride phase. A method for fabricating the nitride-based memristor is also provided.06-12-2014
20140166957HYBRID CIRCUIT OF NITRIDE-BASED TRANSISTOR AND MEMRISTOR - A hybrid circuit comprises a nitride-based transistor portion and a memristor portion. The transistor includes a source and a drain and a gate for controlling conductance of a channel region between the source and the drain. The memristor includes a first electrode and a second electrode separated by an active switching region. The source or drain of the transistor forms one of the electrodes of the memristor.06-19-2014
20140346426Memristor with Channel Region in Thermal Equilibrium with Containing Region - A memristor with a channel region in thermal equilibrium with a containing region. The channel region has a variable concentration of mobile ions. The containing region, formed of stoichiometric crystalline material, contains and is in thermal equilibrium with the channel region.11-27-2014
20150041751CUSTOMIZABLE NONLINEAR ELECTRICAL DEVICES - In one example, a customizable nonlinear electrical device includes a first conductive layer, a second conductive layer, and a thin film metal-oxide layer sandwiched between the first conductive layer and the second conductive layer to form a first rectifying interface between the metal-oxide layer and the first conductive layer and a second rectifying interface between the metal-oxide layer and the second conductive layer. The metal-oxide layer includes an electrically conductive mixture of co-existing metal and metal oxides. A method forming a nonlinear electrical device is also provided.02-12-2015

Patent applications by Gilberto Medeiros Ribeiro, Palo Alto, CA US

Gilberto Medeiros Ribeiro, Menlo Park, CA US

Patent application numberDescriptionPublished
20110240952PROGRAMMABLE CROSSPOINT DEVICE WITH AN INTEGRAL DIODE - A programmable crosspoint device with an integral diode includes a first crossbar, a second crossbar, a metallic interlayer, and a switching oxide layer interposed between the first crossbar and the metallic interlayer. The switching oxide layer has a low resistance state and high resistance state. The programmable crosspoint device also includes an integral diode which is interposed between the second crossbar layer and the metallic interlayer, the integral diode being configured to limit the flow of leakage current through the programmable crosspoint device in one direction. A method for forming a programmable crosspoint device with an integrated diode is also provided.10-06-2011
20120005418Hierarchical On-chip Memory - A hierarchical on-chip memory (01-05-2012
20120014161Memristive Negative Differential Resistance Device - A memristive Negative Differential Resistance (NDR) device includes a first electrode adjacent to a memristive matrix, the memristive matrix including an intrinsic semiconducting region and a highly doped secondary region, a Metal-Insulator-Transition (MIT) material in series with the memristive matrix, and a second electrode adjacent to the MIT material.01-19-2012
20120085985ELECTRICALLY ACTUATED DEVICE - An electrically actuated device includes a reactive metal layer, a first electrode established in contact with the reactive metal layer, an insulating material layer established in contact with the first electrode or the reactive metal layer, an active region established on the insulating material layer, and a second electrode established on the active region. A conductive nano-channel is formed through a thickness of the insulating material layer.04-12-2012
20120099362MEMORY ARRAY WITH METAL-INSULATOR TRANSITION SWITCHING DEVICES - A memory array with Metal-Insulator Transition (MIT) switching devices includes a set of row lines intersecting a set of column lines and a memory element disposed at an intersection between one of the row lines and one of the column lines. The memory element includes a switching layer in series with an MIT material. A method of accessing a target memory element within a memory array includes applying half of an access voltage to a row line connected to the target memory element, the target memory element comprising a switching layer in series with an MIT material, and applying an inverted half of the access voltage to a column line connected to the target memory element.04-26-2012
20120104346SEMICONDUCTOR DEVICE FOR PROVIDING HEAT MANAGEMENT - A semiconductor device for providing heat management may include a first electrode with low metal thermal conductivity and a second electrode with low metal thermal conductivity. A metal oxide structure which includes a transition metal oxide (TMO) may be electrically coupled to the first electrode and second electrode and the metal oxide structure may be disposed between the first electrode and second electrode. An electrically insulating sheath with low thermal conductivity may surround the metal oxide structure.05-03-2012
20120105143PROGRAMMABLE ANALOG FILTER - A programmable analog filter includes a crossbar array with a number of junction elements and a filter circuit being implemented within the crossbar array. At least a portion of the junction elements form reprogrammable components within the filter circuit. A method for using a programmable analog filter is also provided.05-03-2012
20120138885ELECTRICAL CIRCUIT COMPONENT - An electrical circuit component includes a first electrode, a plurality of second electrodes and a negative differential resistance (NDR) material. The first electrode and the plurality of second electrodes are connected to the NDR material and the NDR material is to electrically connect the first electrode to one of the plurality of second electrodes when a sufficient voltage is applied between the first electrode and the one of the plurality of second electrodes through the NDR material.06-07-2012
20120146739DEVICE HAVING INDUCTOR AND MEMCAPACITOR - Methods and means related to an electronic circuit having an inductor and a memcapacitor are provided. Circuitry is formed upon a substrate such that an inductor and non-volatile memory capacitor are formed. Additional circuitry can be optionally formed on the substrate as well. The capacitive value of the memcapacitor is adjustable within a range by way of an applied programming voltage. The capacitive value of the memcapacitor is maintained until reprogrammed at some later time. Oscillators, phase-locked loops and other circuits can be configured using embodiments of the present teachings.06-14-2012
20120195099CHANGING A MEMRISTOR STATE - A method of changing a state of a memristor having a first intermediate layer, a second intermediate layer, and a third intermediate layer positioned between a first electrode and a second electrode includes applying a first pulse having a first bias voltage across the memristor, wherein the first pulse causes mobile species to flow in a first direction within the memristor and collect in the first intermediate layer thereby causing the memristor to enter into an intermediate state and applying a second pulse having a second bias voltage across the memristor, in which the second pulse causes the mobile species from the first intermediate layer to flow in a second direction within the memristor and collect in the third intermediate layer, wherein the flow of the mobile species in the second direction causes the memristor to enter into a fully changed state.08-02-2012
20120228575NANOSCALE ELECTRONIC DEVICE WITH BARRIER LAYERS - On example of the present invention is a nanoscale electronic device comprising a first conductive electrode, a second conductive electrode, and a device layer. The device layer comprises a first dielectric material, between the first and second conductive electrodes, that includes an effective device layer, a first barrier layer near a first interface between the first conductive electrode and the device layer, and a second barrier layer near a second interface between the second conductive electrode and the device layer. A second example of the present invention is an integrated circuit that incorporates nanoscale electronic devices of the first example.09-13-2012
20120313070CONTROLLED SWITCHING MEMRISTOR - A controlled switching memristor includes a first electrode, a second electrode, and a switching layer positioned between the first electrode and the second electrode. The switching layer includes a material to switch between an ON state and an OFF state, in which at least one of the first electrode, the second electrode, and the switching layer is to generate a permanent field within the memristor to enable a speed and an energy of switching from the ON state to the OFF state to be substantially symmetric to a speed and energy of switching from the OFF state to the ON state.12-13-2012
20130114329Multilayer Memory Array - A multilayer crossbar memory array includes a number of layers. Each layer includes a top set of parallel lines, a bottom set of parallel lines intersecting the top set of parallel lines, and memory elements disposed at intersections between the top set of parallel lines and the bottom set of parallel lines. A top set of parallel lines from one of the layers is a bottom set of parallel lines for an adjacent one of the layers.05-09-2013

Patent applications by Gilberto Medeiros Ribeiro, Menlo Park, CA US

Gilberto Medelros Ribeiro, Palo Alto, CA US

Patent application numberDescriptionPublished
20120249252OSCILLATOR CIRCUITRY HAVING NEGATIVE DIFFERENTIAL RESISTANCE - Circuitry is provided that closely emulates biological neural responses. Two astable multivibrator circuits (AMCs), each including a negative differential resistance device, are coupled in series-circuit relationship. Each AMC is characterized by a distinct voltage-dependant time constant. The circuitry exhibits oscillations in electrical current when subjected to a voltage equal to or greater than a threshold value. Various oscillating waveforms can be produced in accordance with voltages applied to the circuitry.10-04-2012
20120280196ELECTROFORMING FREE MEMRISTOR - An electroforming free memristor (11-08-2012

Helio M. Ribeiro, Newark, NJ US

Patent application numberDescriptionPublished
20130096680Instrumentation for repair of meniscus tissue - The invention is directed toward an instrumentation kit used to replace a damaged human knee joint meniscus with an allograft meniscus implant. The kit includes a workstation having a base and upright end sections with a clamping assembly is mounted on the end sections and a movable cutting guide mounted to a side wall of each end section. The tibia is then drilled with a drill to a desired depth and length and a groove is formed in the tibia with an osteotome so that the width is the same as the width of the bone base of the meniscus implant which has been trimmed in the workstation.04-18-2013

Helvecio Carneiro Ribeiro, Bellevue, WA US

Patent application numberDescriptionPublished
20100204981QUEUE BASED MECHANISM TO SUPPORT MULTI-LANGUAGE CHAT ROOMS - The claimed subject matter provides systems and/or methods that produce multilingual capabilities for use in text based chat rooms. The system can include components that receive textual messages from a first client, route these messages to a first queue, and subsequently direct the textual messages to a translation facility that transforms the language of the textual messages from a first language to a second language. The system can further include devices that supply the converted messages to a second queue that is periodically polled by a second client prior to the messages in the second language being retrieved by the second client for display on the second client in the second language.08-12-2010

Jayme Diniz Ribeiro, Pittsford, NY US

Patent application numberDescriptionPublished
20140242525PATTERNING OF TRANSPARENT CONDUCTIVE COATINGS - A method of patterning a conductive polymer includes providing a conductive polymer layer coated over a first support followed by pattern-wise transferring a layer containing polyvinyl acetal from a second support onto the conductive polymer to form a mask with at least one opening. The masked conductive polymer is subjected to treatment through the opening that changes the conductivity of the conductive polymer by at least one order of magnitude in areas not covered by the mask.08-28-2014

Jose Ribeiro, Rockville, MD US

Patent application numberDescriptionPublished
20090324649LEISHMANIA VACCINE USING SAND FLY SALIVARY IMMUNOGEN - The present invention provides vectors that contain and express in vivo or in vitro sand fly 12-31-2009
20140294875Leishmania Vaccine Using Sand Fly Salivary Immunogen - The present invention provides vectors that contain and express in vivo or in vitro sand fly 10-02-2014

Jose Marcos C. Ribeiro, Rockville, MD US

Patent application numberDescriptionPublished
20120010137USE OF IXOLARIS, A TISSUE FACTOR INHIBITOR, FOR THE TREATMENT AND PREVENTION OF CANCER - The invention provides methods for treatment of tissue factor (TF) mediated or associated diseases or processes, such as cancer, by administering at least an active fragment of an Ixolaris polypeptide to a subject. The invention further includes identification of a subject in need of such treatment, and monitoring a subject for amelioration of at least one sign or symptom of the disease. The invention also features kits.01-12-2012
20140342987USE OF IXOLARIS, A TISSUE FACTOR INHIBITOR, FOR THE TREATMENT AND PREVENTION OF CANCER - The invention provides methods for treatment of tissue factor (TF) mediated or associated diseases or processes, such as cancer, by administering at least an active fragment of an Ixolaris polypeptide to a subject. The invention further includes identification of a subject in need of such treatment, and monitoring a subject for amelioration of at least one sign or symptom of the disease. The invention also features kits.11-20-2014

Jose M.c. Ribeiro, Rockville, MD US

Patent application numberDescriptionPublished
20090053255Anti-arthropod vector vaccines, methods of selecting and uses thereof - The present invention provides methods of selecting and uses of anti-arthropod vector vaccines to prevent Leishmaniasis. The present invention also provides compositions for vaccines to prevent Leishmaniasis.02-26-2009
20090117139LUTZOMYIA LONGIPALPIS POLYPEPTIDES AND METHODS OF USE - Substantially purified salivary 05-07-2009
20100278752Methods for Detection and Prevention of Tick Infestation and Pathogen Transmission - The invention generally features methods for the prevention and detection of a tick infestation. The present invention also features methods for decreasing the ability of a tick to feed on a subject.11-04-2010
20110189120AEGYPTIN AND USES THEREOF - The present invention relates to the discovery of the Aegyptin gene and Aegyptin protein, a molecule that interacts with collagen and inhibits platelet adhesion, activation and aggregation. Novel biological tools, prophylactics, therapeutics, diagnostics, and methods of use of the foregoing are also disclosed.08-04-2011
20110212134ANTI-ARTHROPOD VECTOR VACCINES, METHODS OF SELECTING AND USES THEREOF - The present invention provides methods of selecting and uses of anti-arthropod vector vaccines to prevent 09-01-2011
20130084308ANTI-ARTHROPOD VECTOR VACCINES, METHODS OF SELECTING AND USES THEREOF - The present disclosure provides methods of selecting and uses of anti-arthropod vector vaccines to prevent Leishmaniasis. The present disclosure also provides compositions for vaccines to prevent Leishmaniasis.04-04-2013
20130123349AEGYPTIN AND USES THEREOF - The present invention relates to the discovery of the Aegyptin gene and Aegyptin protein, a molecule that interacts with collagen and inhibits platelet adhesion, activation and aggregation. Novel biological tools, prophylactics, therapeutics, diagnostics, and methods of use of the foregoing are also disclosed.05-16-2013
20140093531LUTZOMYIA LONGIPALPIS POLYPEPTIDES AND METHODS OF USE - Substantially purified salivary 04-03-2014
20150315254LUTZOMYIA LONGIPALPIS POLYPEPTIDES AND METHODS OF USE - Substantially purified salivary 11-05-2015

Patent applications by Jose M.c. Ribeiro, Rockville, MD US

Lionel Ribeiro, Houston, TX US

Patent application numberDescriptionPublished
20150345268APPLICATIONS OF ULTRA-LOW VISCOSITY FLUIDS TO STIMULATE ULTRA-TIGHT HYDROCARBON-BEARING FORMATIONS - A method of recovering hydrocarbons from a hydrocarbon-bearing subterranean formation with a matrix permeability of less than 1 mD is disclosed. The method includes injecting a volume of a first fluid having a viscosity lower than the viscosity of water into an injection well present in the formation; separately injecting a volume of a second fluid into the formation before, after, or before and after injecting the first fluid; and producing at least a fraction of the injected volume of the first fluid and hydrocarbons from the formation through a production well present in the formation.12-03-2015

Marcelo Ribeiro, East Amherst, NY US

Patent application numberDescriptionPublished
20130213521MOBILE FILLING STATION - The present invention relates generally to a compact, mobile filling station for filling cylinders. The compact modular filling station is capable of filling cylinders with fluids at high pressures and at high gas flow rates to achieve a rapid fill rates as measured in volume of fluid per time per filling system area using a controlled temperature filling process.08-22-2013
20140290791MOBILE FILLING STATION - The present invention relates generally to a compact, mobile filling station for fitting cylinders. The compact modular filling station is capable of filling cylinders with fluids at high pressures and at high gas flow rates to achieve a rapid fill rates as measured in volume of fluid per time per filling system area using a controlled temperature filling process.10-02-2014

Miguel Ribeiro, Duluth, GA US

Milton Ribeiro, Los Altos, CA US

Patent application numberDescriptionPublished
20130021291QUADRATURE SIGNAL RECEIVER USING SYNCHRONIZED OSCILLATOR - A system comprises a processing device, a signal generator to generate a first signal and a single receiver to receive a second signal from a capacitive sense array. The single receiver is configured to process the second signal for stylus sensing of a stylus proximate to the capacitive sense array in a first mode of operation and to process the second signal for touch sensing of a passive touch object proximate to the capacitive sense array in a second mode of operation. The second signal is unsynchronized with the first signal.01-24-2013
20140022185INTERFACE AND SYNCHRONIZATION METHOD BETWEEN TOUCH CONTROLLER AND DISPLAY DRIVER FOR OPERATION WITH TOUCH INTEGRATED DISPLAYS - Apparatuses and methods of synchronizing a display driver integrated circuit (DDI) and a touch screen controller (TSC) integrated circuit that are coupled to a display integrated touch panel, such as an in-cell panel, and allowing multi-phase transmit (TX) scanning of the in-cell touch panel. One apparatus includes a DDI configured to receive signals on a video interface from a host processor over a video interface and to drive electrodes of a touch panel. The DDI is configured to receive control signals from a TSC over a control interface to drive different transmit (TX) phase sequences of a TX signal in different sensing interval on the electrodes of the touch panel.01-23-2014
20140022202Sensor Array with Edge Pattern - A capacitive sensor array may include a first set of sensor electrodes and a second set of sensor electrodes. Each of the second set of sensor electrodes may intersect each of the first set of sensor electrodes to form a plurality of unit cells each corresponding to a pair of sensor electrodes including one of the first set of sensor electrodes and one of the second set of sensor electrodes. Each point within each of the plurality of unit cells may nearer to a gap between the pair of sensor electrodes corresponding to the unit cell than to a gap between any different pair of sensor electrodes, and a first trace pattern within a first unit cell of the plurality of unit cells may be different from a second trace pattern within an adjacent unit cell of the plurality of unit cells.01-23-2014
20140022203DISCONTINUOUS INTEGRATION USING HALF PERIODS - Apparatuses and methods of frequency hopping algorithms are described. One method monitors a signal on one or more electrodes of a sense network at a first operating frequency and detects noise in the signal at the first operating frequency. The method then switches to a second operating frequency, based on said detecting, for scanning the electrodes to detect a conductive object proximate to the plurality of electrodes, wherein a constant integration time is used for one half-period when scanning the electrodes at both the first and second operating frequencies.01-23-2014
20140253492ASSIGNING ISSUES TO TECHNICAL SUPPORT GROUPS BASED ON SKILL AND PRODUCT KNOWLEDGE - A processing device scans, during a first operation, a first plurality of electrodes along a first axis in a capacitive sense array to generate a first plurality of signals corresponding to a mutual capacitance at electrode intersections of the capacitive sense array. During a second operation, the processing device scans a second plurality of electrodes along a second axis in the capacitive sense array to generate a second plurality of signals corresponding to the mutual capacitance at the electrode intersections of the capacitive sense array, wherein the second operation occurs during a different period of time than the first operation. The processing device determines a first coordinate of a conductive object proximate to the capacitive sense array based on the first plurality of signals and a second coordinate of the conductive object based on the second plurality of signals.09-11-2014

Milton D. Ribeiro, Sunnyvale, CA US

Patent application numberDescriptionPublished
20080278223APPARATUS AND METHOD FOR CONTROLLING THE PROPAGATION DELAY OF A CIRCUIT BY CONTROLLING THE VOLTAGE APPLIED TO THE CIRCUIT - The voltage applied to an integrated circuit is controlled by a temporal process monitor formed as part of the integrated circuit. The temporal process monitor includes a voltage controlled oscillator for producing a first output signal having a first period. A comparator compares the first period to one or more reference values. Should the first period be greater than a first selected reference value the comparator sends a signal to increase the voltage being supplied to the integrated circuit. Should the first period be less than a second selected reference value, the comparator sends a signal to decrease the voltage applied to the integrated circuit. In some embodiments a scaling circuit is provided for producing a second output signal having a second period different from (typically but not necessarily longer than) the first period. By placing the temporal process monitor on an integrated circuit chip, process variations and environmental factors which affect the performance of the integrated circuit can be automatically compensated so that the integrated circuit performs within specifications. Two or more temporal process monitors can be placed on a single integrated circuit chip or on different integrated circuit chips and the longest period produced by the temporal process monitors can be used to control the voltage supplied to all the sections of the integrated circuit chip associated with the temporal process monitors or to all the integrated circuit chips associated with the temporal process monitors. In some embodiments voltages related to the frequency of a temporal process monitor signal and the frequency of a fixed frequency clock are provided to an error amplifier, which changes the voltage applied to the integrated circuit such that the two frequencies are the same.11-13-2008

Milton D.a. Ribeiro, Los Altos, CA US

Patent application numberDescriptionPublished
20140347320INTERFACE AND SYNCHRONIZATION METHOD BETWEEN TOUCH CONTROLLER AND DISPLAY DRIVER FOR OPERATION WITH TOUCH INTEGRATED DISPLAYS - Apparatuses and methods of synchronizing a display driver integrated circuit (DDI) and a touch screen controller (TSC) integrated circuit that are coupled to a display integrated touch panel, such as an in-cell panel, and allowing multi-phase transmit (TX) scanning of the in-cell touch panel. One apparatus includes a DDI configured to receive signals on a video interface from a host processor over a video interface and to drive electrodes of a touch panel. The DDI is configured to receive control signals from a TSC over a control interface to drive different transmit (TX) phase sequences of a TX signal in different sensing interval on the electrodes of the touch panel.11-27-2014

Paulo Ribeiro, Grand Rapids, MI US

Patent application numberDescriptionPublished
20090085574Method for locating phase to ground faults in DC distribution systems - A method for locating phase to ground faults in DC distribution systems. The method includes utilizing wavelet analysis using Multi-Resolution Analysis (MRA) as a signal processing tool for recognition of characteristic features in the voltage signal. The voltage signal contains characteristic information in the high frequency range above the switching frequencies of the PE converters which allows for localization of the fault.04-02-2009

Ramiro Magalhaes Ribeiro, South Pasadena, CA US

Patent application numberDescriptionPublished
20140358155INTRAOCULAR LENS PERIPHERAL SURGICAL SYSTEMS - Peripheral surgical systems are used for insertion and filling of fluid-filled intraocular lenses, reaccessing and modifying fluid-filled intraocular lenses, and explantation of lenses. Although one peripheral surgical unit may perform all of these functions, in some embodiments different units perform different functions—i.e., each function may be performed by a separate unit, or the functions may be distributed over a smaller number of functional units.12-04-2014
20150273197IMPLANTABLE OXYGENATOR WITH SELF-CONTAINED ELECTROLYTE - An implantable oxygenator may have a configuration that is suitable for implantation within a human body be implanted within a human body, such as within a human eye. The implantable oxygenator may include an electrolyte reservoir having a configuration suitable for storing electrolyte and an electrolysis system having a configuration that performs electrolysis on a portion of the electrolyte, thereby producing oxygen in the region of the electrolysis system.10-01-2015

Vagner Ribeiro, Saline, MI US

Patent application numberDescriptionPublished
20100078144SAVING ENERGY AND OPTIMIZING YIELD IN METAL CASTING USING GRAVITY AND SPEED-CONTROLLED CENTRIFUGAL FEED SYSTEM - Molten metal is introduced into the cavity by a combined gravity feed and centrifugal force feed using a rotating turntable under electrical or electronic control. The centrifugal force is controlled to be substantially constant until the metal has solidified. This is accomplished by controlling the ramp-up acceleration of the turntable where rotational velocity is a time-dependent function of rotational radius and molten metal mass and taking into account the flow rate and cooling rate of the liquid metal. The process reduces waste and the attendant energy consumption associated with the quantity of metal required to be melted for the initial pour and associated with reprocessing and reusing the waste component.04-01-2010
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