| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 417440200 | Responsive to pump fluid pressure | 39 |
| 20080260540 | Pump controller system and method - A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval. | 10-23-2008 |
| 20090060752 | Constant Pressure Pressurizing Water Pump - A water pressurizing pump includes a pump mounted in a compartment of a water tank for pressurizing and outputting water. The compartment is sealed by a cover having a first channel in communication between the compartment and a water supply coupler and a second channel having an end in communication with the first channel. A pressure tank is mounted to the other end of the second channel of the cover. A differential pressure valve unit is slideably mounted in the pressure tank adjacent to the second channel. The differential pressure valve unit is movable by the high water pressure in the second channel to allow water from the second channel to enter the pressure tank. | 03-05-2009 |
| 20090068025 | Intelligent Controller for Refrigerating and Air Conditioning Systems - An intelligent controller ( | 03-12-2009 |
| 20090097986 | OIL PRESSURE UNIT AND SPEED CONTROL METHOD OF MOTOR IN OIL PRESSURE UNIT - An oil pressure unit includes an inverter arranged to supply electric power to a motor; a load sensor arranged to detect a load of the oil pressure pump; a rotation sensor arranged to detect a rotation speed of the motor; a current command value calculation part configured to calculate a current command value so that a deviation between a speed command value representing a target rotation speed of the motor and a rotation speed of the motor converges to zero; a correction part configured to correct the current command value based on the load of the oil pressure pump; and a control signal generation part configured to output a control signal to the inverter based on a corrected current command value. | 04-16-2009 |
| 20090162211 | Strain Gauge Pump Control Switch - A control switch incorporates a solid state transducer, a strain gauge. The transducer responds to a local environmental condition, such as fluid level, or pressure and exhibits a parameter change which can be detected as an electrical output. Control circuits coupled to the transducer can sense the parameter change and switch a source of electrical energy to a load in response thereto. | 06-25-2009 |
| 20100166571 | DEVICE FOR REGULATING THE OPERATING PRESSURE OF AN OIL-INJECTED COMPRESSOR INSTALLATION - Device for adjusting the operating pressure of an oil-injected compressor installation with a compressor element ( | 07-01-2010 |
| 20100202893 | MOTOR/PUMP ASSEMBLY - A motor/pump assembly for a motor vehicle brake system including a pump and a motor driving the pump, the pump having opposite working diaphragms which are, in each case, mounted between a pump casing and a cover and thereby delimit a space and which can be moved by a crank drive, the space being assigned, in each case, an inlet duct with an inlet valve and an outlet duct with an outlet valve. The outlet ducts are arranged in the covers and in the pump casing such that air displaced out of the spaces is conducted into an inner space surrounding the crank drive of the pump casing and that an air outlet unit be provided, which allows a low-noise blow-out of the air from the inner space as a result of the deflection of the air. | 08-12-2010 |
| 20100221124 | FLUID TRANSPORTING DEVICE USING CONDUCTIVE POLYMER - A fluid transporting device is provided with a pump chamber that has a pump function for sucking and discharging a fluid, and is filled therein with the fluid, a casing unit which forms one portion of a wall surface of the pump chamber, a diaphragm which is formed by a conductive polymer film that is subjected to electrochemomechanical expansion and contraction, and forms one portion of the wall surface of the pump chamber, an electrolyte chamber that contains an electrolyte therein, with one portion of the electrolyte being made in contact with the diaphragm, a power supply that applies a voltage to the diaphragm, and a pressure maintaining unit that maintains a pressure of the diaphragm within a predetermined range by moving or deforming the one portion of the wall surface of the electrolyte chamber. | 09-02-2010 |
| 20100296946 | PRESSURE SENSING DEVICE FOR ELECTRONIC DEVICE AND PRESSURE SENSING METHOD AND THERMAL DISSIPATION DEVICE THEREOF - A pressure sensing device for an electronic device includes a pressure sensing unit, a control unit, and an alarm unit. The pressure sensing unit is installed in the electronic device, and used for detecting fluid pressure to generate a pressure signal. The control unit is coupled to the pressure sensing unit, and used for determining variation in the fluid pressure in the electronic device according to the pressure signal and generating a control signal. The alarm unit is coupled to the control unit, and used for outputting an alarm signal according to the control signal to execute an alarm function. | 11-25-2010 |
| 20110200453 | EFFICIENCY OPTIMIZED AIR FLOW APPARATUS AND METHOD - A method for controlling the motor of an air handling system to provide a desired output of flowing air therefrom while minimizing the power used by the motor, including operationally connecting a switched reluctance electric motor to a blower, operationally connecting an electronic controller to the switched reluctance electric motor, operationally connected at least one sensor to the electronic controller, measuring at least one environmental parameter with the at least one sensor, inputting the desired air flow into the electronic controller, calculating the minimum motor speed necessary to provide the desired air flow, and sending a control signal from the electronic controller to the motor to control the motor to the minimum motor speed necessary to provide the desired air flow. | 08-18-2011 |
| 20120039723 | CONTROLLER FOR A LIQUID SUPPLY PUMP - A controller ( | 02-16-2012 |
| 20120093662 | AUTO-STOP AIR PUMP - An auto-stop air pump has a housing, a blower and an auto-stop device. The housing has an upper chamber, a lower chamber, a main inlet and an outlet. The upper chamber and the lower chamber communicate with each other. The main inlet and the outlet are formed through the housing respectively and communicate with the upper chamber. The blower is mounted in the housing and has a motor connected to a dual-sided impeller. The auto-stop device is mounted in the housing and has a shell, a film, a micro switch and an actuating unit. The film and the micro switch are mounted in the shell. The actuating unit is mounted movably through the shell. Owing to deformation of the film by pressure, the film presses the micro switch to close the micro switch so the air pump can stop working automatically. | 04-19-2012 |
| 20120121440 | COMPRESSORS CONTROL - The invention relates to improvements in compressors and, in particular, to improvements in a method of controlling centrifugal compressors to maximise their efficacy. The compressor has an impeller mounted on a shaft supported by an active magnetic bearing unit and is driven by a variable speed motor at a rotational speed under normal on-load conditions at a calculated pre-surge speed for the required delivery pressure. The actual rotational speed and delivery pressure of the compressor is repeatedly measured and recorded at high frequency. The compressor is allowed to surge periodically after a preset re-calibration time and the compressor is put into a surge recovery cycle when surge is detected, during which the compressor is off-loaded and the rotational speed reduced. The compressor pre-surge speed line is recalibrated during the surge recovery cycle for the current operating conditions and reloads the compressor when the shaft speed reaches the greater of the recalibrated presurge speed line or the load speed. | 05-17-2012 |
| 20120148417 | ACTIVE COMPENSATION FOR MUD TELEMETRY MODULATOR AND TURBINE - An arrangement having a piston configured to move along an axial pathway a rotating seal configured to seal an inside environment from an outside environment, the rotating seal configured to be acted upon by a pressure exerted from the piston, a differential pressure sensor measuring a pressure difference between a first fluid from the outside environment and a second fluid on the inside environment, a motor connected to the piston, the motor configured to actuate the piston to a position along an axial pathway and an electronic feedback control system connected to the motor, the electronic feedback system configured to interface with the differential pressure sensor and maintain a pressure generated by the piston onto the rotating seal to a desired pressure. | 06-14-2012 |
| 20120156057 | FUEL SUPPLY APPARATUS - A fuel supply apparatus includes a fuel pump having an electrically driven motor. A controller is connected to the motor of the first fuel pump and is capable of determining an estimated pressure based on a value of current supplied to the motor and a rotational speed of the motor. The controller controls the motor so that the estimated pressure becomes relatively equal to a target pressure. | 06-21-2012 |
| 20120237363 | Method And System For Cleaning A Fan Inlet - A system includes a housing; a first fan having a first inlet and a second fan having a second inlet, the first fan and the second fan mounted in a wall of the housing, the first fan and the second fan oriented to draw air into the housing; a device in the housing, the device positioned to receive airflow from the first fan and the second fan; and a controller for controlling the first fan and the second fan, wherein the controller is configured to initiate a cleaning cycle during which the first fan is on and the second fan is off to cause backpressure airflow to flow through the second inlet in a reverse direction for a first time period and the first fan is off and the second fan is on to cause backpressure airflow to flow through the first inlet in a reverse direction for a second time period. | 09-20-2012 |
| 20130101438 | CUSTOMIZABLE DISPENSE SYSTEM WITH SMART CONTROLLER - Embodiments disclosed provide a customizable dispense system implementing modular architecture, the customizable dispense system comprising a smart controller configured to operate various pneumatic pumps and motor pumps in various semiconductor manufacturing processes that are sensitive to defects in printed patterns. The smart controller is configured to, upon switching from communicating with a first pump to a second pump, automatically recognize the second pump and apply a control scheme to control the second pump, which may be a motor pump or a pneumatic pump. The switching may be due to physical disconnection of the first pump and physical connection of the second pump or it can be entirely done via software. The smart controller may be connected to track and a variety of devices, including smart filters. | 04-25-2013 |
| 20130121844 | Variable Speed High Efficiency Gas Compressor System - A system for powering a compressor. The system may include a power generation unit adapted to generate AC power. An electric motor may be coupled to the power generation unit and adapted to turn at a rate proportionate to a frequency of the AC power. A compressor may be coupled to the electric motor, and an output pressure of the compressor may be directly dependent on the rate that the electric motor turns. A control system may be coupled to the power generation unit and to the compressor, and the control system may be adapted to vary the frequency of the AC power generated by the power generation unit, thereby varying the output pressure of the compressor. | 05-16-2013 |
| 20130171008 | ELECTRIC PUMP SYSTEM - In an electric pump system, hydraulic fluid that is stored in an oil pan is supplied to a transmission mechanism through an oil passage by driving an oil pump with the use of a motor. An EOPECU estimates a hydraulic pressure of the hydraulic fluid on the basis of a driving current for the motor and a rotation speed of the motor, and executes drive control on the motor on the basis of the estimated hydraulic pressure value. | 07-04-2013 |
| 20130243609 | LANCE PUMP HAVING VERTICALLY MOUNTED STEPPER MOTOR - A pump includes a pump body and an elongate tube. The pump includes an elongate core slidably received in the tube, a stepper motor having a selectively rotatable output shaft extending vertically and a transmission for effecting relative reciprocating motion between the core and the tube. The pump includes an inlet check valve mounted inside the core defining with the core an expansible and contractible lower pump chamber. The inlet check valve is oriented to open during each upward pumping stroke. The pump includes an annular upper chamber above the lower pump chamber and a lateral passage connecting the lower pump chamber to the annular upper chamber. The lateral passage has a check valve oriented to open during each downward pumping stroke. The pump includes an outlet passage connected to the annular upper chamber permitting viscous liquid to flow to the outlet passage on each upward and downward pumping stroke. | 09-19-2013 |
| 20130266455 | Air Compressor With Shut-Off Mechanism - A compressor system is disclosed, comprising a first pump driven by a D/C motor, a second pump driven by an A/C motor, and a switch which allows a user to manually selectively engage of one of the D/C motor or A/C motor, including a gauge having a user settable shut-off mechanism which interrupts power to at least one of D/C or A/C motors. Also disclosed is a gauge configured to display system pressure independent of the user settable shut-off mechanism. A gauge having a rotatable bezel with a needle stop comprising a first needle rotatably coupled to a gauge shaft, and a second needle fixable coupled to the gauge shaft, and a spring disposed between the first and second needles, the spring configured to bias the first needle into the second needle so changes in pressure causes rotation of both is also disclosed. | 10-10-2013 |
| 20130323085 | FLUID CONTROL APPARATUS AND METHOD FOR ADJUSTING FLUID CONTROL APPARATUS - In a method for adjusting a fluid control apparatus, in a pressing step, a piezoelectric pump is placed on a stage with a cover plate facing upward, the stage is moved up, and a center portion of a principal surface of the cover plate on a side opposite to a diaphragm is pressed with a pressing pin. As a result, the cover plate and the base plate are shaped so as to warp convexly toward the diaphragm side, and a portion joined to a flexible plate is pulled, such that the flexible plate is caused to warp convexly toward the diaphragm side. Thus, residual tensile stress occurs in a movable portion of the flexible plate. Therefore, due to the residual tensile stress, the tensile stress of the movable portion of the flexible plate is increased. | 12-05-2013 |
| 20140017095 | STRAIN GAUGE PUMP CONTROL SWITCH - A control switch incorporates a solid state transducer, a strain gauge. The transducer responds to a local environmental condition, such as fluid level, or pressure and exhibits a parameter change which can be detected as an electrical output. Control circuits coupled to the transducer can sense the parameter change and switch a source of electrical energy to a load in response thereto. | 01-16-2014 |
| 20140037464 | STRAIN GAUGE PUMP CONTROL SWITCH - A control switch incorporates a solid state transducer, a strain gauge. The transducer responds to a local environmental condition, such as fluid level, or pressure and exhibits a parameter change which can be detected as an electrical output. Control circuits coupled to the transducer can sense the parameter change and switch a source of electrical energy to a load in response thereto. | 02-06-2014 |
| 20140154097 | SYSTEM AND METHOD TO PROVIDE LUBRICATION FOR A PLUG-IN HYBRID - In hybrid electric vehicles having increased battery storage capacity and plug-in capability, electric-only operation of significant duration is available. To supplement lubrication for the electric and mechanical components provided in a fluid circuit by an engine-driven mechanical pump, an electric pump is provided in parallel to the mechanical pump. When the electric pump is operating, a diagnostic can be performed to determine system integrity. According to one embodiment, an actual quantity provide to the circuit is determined; an expected quantity is estimated; and a fault is determined when the actual and expected quantities differ by more than a predetermined amount. The fault may indicate a leak or plug in the fluid circuit or a failure of a component in the fluid circuit. | 06-05-2014 |
| 20140219822 | METHOD AND DEVICE FOR CONTROLLING A TORQUE OF AN ELECTRIC MOTOR OF AN ELECTRO-HYDRAULIC SYSTEM - A method is used to control a torque of an electric motor of an electro-hydraulic system. The method includes selecting a value of a set point torque depending on a current pressure in a hydraulic circuit of the electro-hydraulic system. The method also includes determining a control signal for controlling the torque of the electric motor using a target torque and the set point torque. | 08-07-2014 |
| 20140241903 | ELECTRIC PUMP - An electric pump may comprise a pump portion including an impeller, a motor portion configured to activate the pump portion, and a housing configured to contain the pump portion and the motor portion. The motor portion may comprise a rotor configured to activate the impeller, a stator configured to rotate the rotor, a control circuit configured to control a rotation of the rotor, a resin portion configured to cover the stator, and a heat transferring portion contacting the control circuit and the housing, thermal conductivity of the heat transferring portion being higher than thermal conductivity of the resin portion. | 08-28-2014 |
| 20140271233 | MODULAR PUMP PLATFORM - A modular pump platform includes a pump head module, a pump motor module, an electronics module and a separable tray. The pump motor module includes a pump motor having a rotary output removably coupled to a crank shaft of the pump head, the pump motor being one of multiple types of pump motors, and the pump motor module being detachably connected to the pump head module. The electronics module includes an electronic control circuit configured control operation of the pump motor, the electronic control circuit being one of multiple types of electronic control circuits corresponding to the types of pump motors. Each of the pump head module, the pump motor module and the electronics module is detachably connected to the separable tray. At least the pump motor module is interchangeable with another pump motor module comprising a pump motor of another type. | 09-18-2014 |
| 20140322032 | SYSTEM AND METHOD FOR PRESSURE COMPENSATION IN A PUMP - Systems and methods for maintaining substantially a baseline pressure in a chamber of a pumping apparatus are disclosed. Embodiments of the present invention may serve to control a motor to compensate or account for a pressure drift which may occur in a chamber of the pumping apparatus. More specifically, a dispense motor may be controlled to substantially maintain a baseline pressure in the dispense chamber before a dispense based on a pressure sensed in the dispense chamber. In one embodiment, before a dispense is initiated a control loop may be utilized such that it is repeatedly determined if the pressure in the dispense chamber is above a desired pressure and, if so, the movement of the pumping means regulated to maintain substantially the desired pressure in the dispense chamber until a dispense of fluid is initiated. | 10-30-2014 |
| 20150071791 | METHOD FOR OPERATING A HYDRAULIC PUMP ARRANGEMENT, AND HYDRAULIC PUMP ARRANGEMENT - A hydraulic pump arrangement for a portable hydraulic tool operates energy-independently or dependent on a power network. The hydraulic pump arrangement detachably connects via hose to the hydraulic tool, is driven by an electrical energy source and is controlled in a load-dependent manner by changing between a load state and a non-load state. The load state has a first, higher electrical energy supply and the non-load state has a second, lower electrical supply. To increase usage flexibility, usage safety and ease of use, a battery is mounted on the hydraulic pump arrangement to be manually detachable in a receptacle accessible from the outside. A power adapter ( | 03-12-2015 |
| 20150139816 | HYDRAULIC FLUID PRESSURE CONTROL - A hydraulic fluid pressure control system comprising: a hydraulic pump motor having an electrical input configured to receive an AC input signal and a hydraulic fluid output configured to output a pressure proportional to the frequency of the AC input signal; and electronic control circuitry connected to the electrical input, wherein: the electronic control circuitry provides an AC input signal of variable frequency. The electronic control circuitry may comprise an inverter. | 05-21-2015 |
| 20160084254 | Gas Lock Resolution During Operation Of An Electric Submersible Pump - Gas lock resolution during operation of an electric submersible pump is provided. An example method, module, or computing hardware with software product, detects a gas lock during current operation of an electric submersible pump (ESP) and intervenes to relieve the gas lock without stopping the ESP. After sensing a gas lock condition, an example module calculates a pump speed for attempting gas lock resolution. The example module may decrease the speed of the ESP to flush the gas lock, and then reaccelerate the ESP to check that the gas lock has been eliminated. The example module may apply one or more stored motor speed patterns that iteratively seek a pump speed that succeeds in clearing the gas lock, without stopping the ESP. The example module has built-in protections to protect the ESP from thermal overload and other damage. | 03-24-2016 |
| 20160177937 | Method for Determining a Physical Variable in a Positive Displacement Pump | 06-23-2016 |
| 20190145438 | APPARATUS AND METHOD FOR A HYDRAULIC SYSTEM | 05-16-2019 |
| 20220136497 | SUBSTRATE PROCESSING APPARATUS AND RECORDING MEDIUM - There is provided a technique that includes: a controller configured to execute a process recipe including a plurality of steps to perform a predetermined process on a substrate. The controller acquires device data, which includes at least one of a current value, a rotational speed, and a back pressure of a pump, in a specific step among the plurality of steps and compares an acquired value of the device data with a previously acquired value of the device data. The controller generates a notification if at least one of the following conditions is met: the acquired value for the current value is larger than the previously acquired value for the current value, the acquired value for the back pressure is larger than the previously acquired value for the back pressure, and the acquired value for the rotational speed is smaller than the previously acquired value for the rotational speed. | 05-05-2022 |
| 417440400 | Low pressure stops motor from turning on pump | 1 |
| 20110318194 | PUMP WITH AUTOMATIC DEACTIVATION MECHANISM - An automatic deactivation mechanism is configured for an air bladder pump having a casing and a motor located therein to pump air into an air bladder from the atmosphere and through an air valve connected through the casing. The automatic deactivation mechanism includes a housing positioned within the casing and has defined therethrough a first aperture in fluid communication with the atmosphere through the casing and a second aperture in fluid communication with the air bladder through the casing. Included within the housing are at least two switches and a diaphragm positioned between the switches. The housing is sealed so that when a threshold pressure is reached therein, at least one switch is triggered by deflection of the diaphragm to automatically deactivate the pump by de-energizing the motor. | 12-29-2011 |
| 417440600 | Dial-type sensor | 1 |
| 20110123353 | AIR COMPRESSOR WITH SHUT-OFF MECHANISM - A compressor system is disclosed, comprising a first pump driven by a D/C motor, a second pump driven by an A/C motor, and a switch which allows a user to manually selectively engage of one of the D/C motor or A/C motor, including a gauge having a user settable shut-off mechanism which interrupts power to at least one of D/C or A/C motors. Also disclosed is a gauge configured to display system pressure independent of the user settable shut-off mechanism. A gauge having a rotatable bezel with a needle stop comprising a first needle rotatably coupled to a gauge shaft, and a second needle fixable coupled to the gauge shaft, and a spring disposed between the first and second needles, the spring configured to bias the first needle into the second needle so changes in pressure causes rotation of both is also disclosed. | 05-26-2011 |
| 417440900 | Diaphragm | 1 |
| 20090053074 | Positive displacement pump and method of use thereof - The present invention relates to positive displacement pumps, and particularly to diaphragm positive displacement pumps. An inventive diaphragm positive displacement pump is provided comprising at least one pumping chamber containing a deformable hose diaphragm, a working fluid cylinder fluidly connected to the deformable hose diaphragm, and at least one linear motor to displace the working fluid within the working fluid cylinder and thereby increase and decrease the volume of the pumping chamber. An inventive method of controlling an inventive diaphragm positive displacement pump comprising at least one pumping chamber and powered by at least one linear motor is also provided. | 02-26-2009 |
| 417440300 | Inlet pressure | 1 |
| 20100092307 | Methods and Systems for Determining Operating States of Pumps - Embodiments of methods and systems for monitoring of pumps are provided. According to one embodiment of the invention, there is disclosed a method for determining operating states of pumps. The method may include receiving, by a controller from a first sensor communicating with a first pump, a first vibration measurement. Further, the method may include receiving, by the controller from a second sensor communicating with a second pump, a second vibration measurement. Operating states of the first pump and the second pump may be thus determined based at least in part on comparing the first vibration measurement to a first operating condition and comparing the second vibration measurement to a second operating condition. A control action may be transmitted responsive to determining the respective operating states of the first pump and the second pump. | 04-15-2010 |
