| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 417046000 | By controlling drive motor motive fluid | 32 |
| 20080206066 | Reciprocating Pump With Electronically Monitored Air Valve Having Battery And Solenoid Electronic Monitoring - An air operated pump ( | 08-28-2008 |
| 20080317604 | PUMP LOSS-OF PRIME AUTOMATIC SHUT OFF VALVE - A pump shutoff device is provided wherein compressed air supplied to the air inlet port of the over speed control device enters an air pressure chamber, and then proceeds to an adjacent air exhaust chamber. From there, the air passes to an outport which is connected,directly to the inlet port of the air motor of an air-operated piston pump spool located inside the body of the device, is shaped such that the valve spool functions to allow passage of air freely from the air pressure chamber to the air exhaust chamber. Compressed air is connected through a series of unrestricted conduits,ports and chambers continuous from the compressed air supply to the air motor of a pump. The air motor is energized by compressed air to provide continuous pumping. | 12-25-2008 |
| 20090060753 | Self-Adaptive Piston Blood Pump - The present invention provides a self-adjusting fluid pump that includes a piston pump containing at least one piston with a pressure sensor. The fluid pump also includes at least one fluid-containing pump chamber within the piston pump, adjacent to said piston, wherein advancing the piston causes fluid to flow from the pump chamber to a biological destination, and retracting the piston causes fluid to passively fill the pump chamber. A microprocessor uses data from the piston pressure sensor to calculate the rate of fluid output flow from the pump chamber for each pump cycle and compares the output flow rate to a pre-specified value range. If the output flow rate deviates from the pre-specified value range, the microprocessor adjusts the fluid output flow of the piston pump in order to bring the output flow rate within the pre-specified value range. The adjustment can be made by increasing or decreasing stroke rate (piston velocity), stroke volume, or a combination of both. | 03-05-2009 |
| 20090185915 | Digital Control Device - A digital control system for monitoring and controlling a concrete pumping system. A microcontroller provides control signals and receives feedback from associated comparator switch subsystems. Feedback from the comparator switch subsystems is used by a microcontroller to determine whether short circuit or open circuit malfunctions are occurring on solenoids valves attached to the output of the comparator switch subsystems. Said control system exhibits an electronic control means to control the admittance or interruption of current through said solenoids. Individual solenoid status is sent to a graphical display where an operator views said display to diagnose failure modes. The microcontroller further monitors the establishment of temporal initial conditions and limits operational pump activity until said temporal conditions are met. | 07-23-2009 |
| 20090202361 | CONTROL SYSTEM FOR AN AIR OPERATED DIAPHRAGM PUMP - The present invention includes methods and apparatuses for operating and controlling AOD pumps ( | 08-13-2009 |
| 20090297363 | VARIABLE OUTPUT FLUID PUMP SYSTEM - A variable output pump system is provided, the pump system having a first positive displacement pump; a pump drive operably coupled to the first positive displacement pump, wherein the pump drive operates the first positive displacement pump to have a first output profile during a first operating range and a second output profile during a second operating range, the pump drive having a hydraulic release being configured to decrease the second output profile as a hydraulic pressure increases. | 12-03-2009 |
| 20100260615 | Multi-pump sequencing - A pump system for pumping a viscous material that includes N positive displacement pumps, where N is an integer greater than two, and a hydraulic drive. Each pump has an inlet and an outlet therefrom, and a pair of cylinders each with a piston movable in a reciprocating stroke cycle therein. The hydraulic drive is connected to the N positive displacement pumps to reciprocate the pistons within the cylinders. The stroke cycle includes a discharging stroke and a filling stroke. The discharging stroke and the filling stroke of the N positive displacement pumps are staggered from one another by 1/N stroke positions such that no two pumps have pistons in the same stroke position at the same time. | 10-14-2010 |
| 20110002793 | RECIPROCATING PUMP WITH ELECTRONICALLY MONITORED AIR VALVE AND PISTON - An air operated pump | 01-06-2011 |
| 20110014062 | CONTROL DEVICE OF HYDRAULICALLY DRIVEN FAN - Disclosed is a control device of a hydraulically driven fan. The control device of a hydraulically driven fan is characterized by comprising first command value calculation means for calculating a fan speed command by a proportional term only while a difference between a target valve controlled variable and an actual valve controlled variable is not smaller than a predetermined threshold, second command value calculation means for calculating a fan speed command by the proportional term and an integral term while a difference between a target valve controlled variable and an actual valve controlled variable is smaller than a predetermined threshold, target valve controlled variable calculation means for calculating a target valve controlled variable of a control valve based on the calculated fan speed command, and control means for outputting a valve controlled variable to a control valve such that the control valve reaches the target valve controlled variable. | 01-20-2011 |
| 20110020139 | ROLLING CLEANER APPARATUS FOR A SUBMERGED SURFACE WITH A COMBINED HYDRAULIC AND ELECTRIC DRIVE, AND CORRESPONDING METHOD - The invention relates to a rolling cleaner apparatus for a submerged surface, comprising rolling drive members, at least one motor ( | 01-27-2011 |
| 20110236224 | Air-Driven Pump System - An air-driven pump system comprising an efficiency valve. One or multiple efficiency valves integral to the pumping system prevent overfilling of the air chambers, thereby reducing the amount of air used by the system while decreasing the energy wasted by the system. | 09-29-2011 |
| 20120020811 | Fan Control - The present disclosure relates to a hydraulic fan control circuit for a machine, in particular for a motor vehicle, a construction machine or a lifting device, with at least one hydraulic pump and at least one hydraulic motor for driving at least one fan, wherein the hydraulic motor driving torque of at least one hydraulic motor is controllable by adjusting the absorption volume. | 01-26-2012 |
| 20120039724 | METHODS AND DEVICES USED FOR AUTOMATICALLY CONTROLLING SPEED OF AN EXPANDER - A method of controlling a transition time through a speed range that is unsafe for an integrity of a second expander that receives a fluid flow from a first expander, by automatically biasing a speed of the second expander is provided. The method includes setting the speed of the second expander to be smaller than a current speed of the first expander. The method also includes setting the speed of the second expander to be larger than the current speed of the first expander, when the current speed of the first expander is within the bias application range, and the current speed of the second expander increases and is larger than the first speed value, or decreases and is larger than the second speed value. | 02-16-2012 |
| 20120057989 | COOLING DEVICE FOR CONSTRUCTION MACHINERY - A cooling device of a construction machine according to the present invention includes: two or more hydraulic motors that rotate positively and reversibly to correspond to a supplying direction of pressure oil and drives rotatably cooling fans connected thereto, respectively; a switching valve switching rotation directions of the two or more hydraulic motors by switching the supplying direction of the pressure oil supplied to the two or more hydraulic motors from the hydraulic motor; and flow rate makeup valves controlling an additional flow supplied upstream of the two or more hydraulic motors when a pressure drop is generated upstream of the two or more hydraulic motors on the basis of the supplying direction of the pressure oil. | 03-08-2012 |
| 20120148418 | SWITCHING ASSEMBLY FOR A HYDRAULIC PUMP JACK - A switching assembly for a hydraulic pump jack has a non-magnetic cylinder. A piston is reciprocally movable within the interior bore of the cylinder. The piston has circumferential sealing means to engage the interior surface of the cylinder. A magnetic element is carried by the piston. A fluid source supplies a working fluid to the cylinder, wherein the piston is moved by injecting working fluid into the cylinder. At least one magnetic sensor is externally mounted adjacent to the non-magnetic cylinder that senses at least a top of a piston stroke and the bottom of the piston stroke. A controller receives signals from the magnetically actuated sensor as the magnet element carried by the piston comes in proximity with and influences the at least one magnetic sensor. The controller controls piston positioning by selectively controlling the working fluid supplied by the fluid source to the cylinder. | 06-14-2012 |
| 20120230843 | COOLING SYSTEM FOR AN ELECTRIC DRIVE MACHINE AND METHOD - A cooling system includes a cooling duct extending between a first component and a second component of a machine. A motor powered fan in the cooling duct creates an airflow in the duct. First and second temperature sensors are disposed to measure, respectively, first and second temperatures, which are associated with first and second temperature limits in first and second components. An electronic controller provides a motor command signal, receives the first and second temperatures, calculates first and second temperature differences to generate first and second blower commands based on the respective temperature differences, and calculates a feed-forward blower motor command based on a machine load factor. The electronic controller selects the greater of the first blower command, the second blower command, and the feed-forward blower command to be a maximum command, and determines and provides the motor command signal to the motor based on the maximum command. | 09-13-2012 |
| 20120308404 | HYDROSTATIC HYBRID DRIVE SYSTEM - The invention relates to an hydrostatic hybrid drive system for road vehicles, said system comprising a pump/motor unit ( | 12-06-2012 |
| 20130058796 | DOSING PUMP UNIT - A metering pump unit with a metering chamber ( | 03-07-2013 |
| 20130089438 | VEHICLE BRAKE HYDRAULIC CONTROL APPARATUS - A vehicle brake hydraulic control apparatus according to one embodiment includes: a suction valve; a pump; a motor for driving the pump; and a control unit controlling the suction valve and the motor through connection/disconnection of power thereto. The control unit includes: a detection module configured to detect a back electromotive voltage generated due to an inertia rotation of the motor after disconnection of power; a voltage check module configured to check whether a voltage condition is satisfied or not that the back electromotive voltage is equal to or less than a given voltage; and a time check module configured to check whether a time condition is satisfied or not that a given time has passed after the voltage condition has been satisfied. And, the control unit closes the suction valve when the time condition is satisfied. | 04-11-2013 |
| 20130202452 | HYDRAULIC FAN DRIVE - A hydraulic fan drive includes a hydraulic pump that has an adjustable swept volume. The hydraulic pump is assigned a pressure control valve arrangement that is configured to regulate a pump pressure by adjustment of the swept volume. The drive further includes a hydraulic motor configured to drive an impeller wheel and a pressure line, which is connected to a pressure input of the hydraulic motor and into which pressure medium is configured to be conveyed by the hydraulic pump. A hydraulic accumulator is connected to the pressure line and the displacement of the hydraulic motor is configured to be adjusted. Energy is buffer-stored by the hydraulic accumulator by feeding in pressure medium beyond the amount that is displaced by the hydraulic motor. This stored energy becomes free for other operations of a machine, for example, to which the drive is attached. | 08-08-2013 |
| 20130280101 | ELECTRIC PUMP DEVICE - There is provided an electric pump device that can suppress the generation of vibration or noise. When reducing hydraulic pressure supplied from an oil pump with the increase of hydraulic pressure supplied from a main pump driven by an engine, an electric oil pump ECU performs a pressure reducing control gradually reducing the hydraulic pressure. | 10-24-2013 |
| 20140086759 | Hydraulic Power System for HVAC Compressor - A modular HVAC unit may incorporate a hydraulically powered refrigerant compressor to more efficiently provide air conditioning to an operator cab of a work machine. The refrigerant compressor may be fluidly powered by a hydraulic fluid motor fluidly coupled to and driven by a variable displacement pump. An electronic controller may be configured to vary hydraulic pump flow rates to the motor via use of a proportioning control valve to maintain a desired evaporator performance temperature. The control valve may be configured to stop the HVAC unit whenever a backup system may be used, when a discharge is to be prevented, and/or when operator air-conditioning is not desired. The controller may monitor evaporator performance via a fin temperature sensor, and may send appropriate signals to the control valve for modulating hydraulic flows through the motor. The arrangement may provide a significant increase in the life and performance of the compressor. | 03-27-2014 |
| 20140093397 | TRAILED AGRICULTURAL IMPLEMENT PUMP WITH HYDRAULIC FLOW RATE CONTROL - A trailed agricultural implement is disclosed. The trailed agricultural implement includes a hydraulically-driven pump for moving a fluid at an actual fluid rate. An electro-hydraulic valve is configured to regulate an implement hydraulic pressure to the hydraulically-driven pump. The hydraulically-driven pump regulates the actual fluid rate. The electro-hydraulic valve is configured to receive a vehicle hydraulic pressure. The electro-hydraulic valve communicates with a vehicle load sense system. The load sense system senses the implement hydraulic pressure and communicates with a vehicle hydraulic pump. The vehicle hydraulic pump adjusts the vehicle hydraulic pressure to correspond to the implement hydraulic pressure. | 04-03-2014 |
| 20140205466 | SYNCHRONIZED DUAL WELL VARIABLE STROKE AND VARIABLE SPEED PUMP DOWN CONTROL WITH REGENERATIVE ASSIST - A dual well pumping unit ( | 07-24-2014 |
| 20140294603 | SYNCHRONIZED DUAL WELL VARIABLE STROKE AND VARIABLE SPEED PUMP DOWN CONTROL WITH REGENERATIVE ASSIST - A dual well pumping unit ( | 10-02-2014 |
| 20140348667 | METHOD FOR INCREASING COMPRESSED AIR EFFICIENCY IN A PUMP - One or more techniques and/or systems are disclosed for increasing compressed air efficiency in a pump utilizes an air efficiency device in order to optimize the amount of a compressed air in a pump. The air efficiency device may allow for controlling the operation of the air operated diaphragm pump by reducing the flow of compressed air supplied to the pump as the pump moves between first and second diaphragm positions. A sensor may be used to monitor velocity of the diaphragm assemblies. In turn, full position feedback is possible so that the pump self-adjusts to determine the optimum, or close to optimum, turndown point of the diaphragm assemblies. As such, air savings is achieved by minimizing the amount of required compressed air. | 11-27-2014 |
| 20150050161 | AIR OPERATED DIAPHRAGM PUMP - An air operated diaphragm pump is provided featuring a housing, a fluid passageway and an indicator arrangement. The housing is configured with an orifice. The fluid passageway responses to a vacuum force and provides fluid, such as syrup from a bag or container to a beverage dispenser, through the air operated diaphragm pump via the fluid passageway, and is configured with a suction plenum or channel formed by an enclosed space with an inside pressure that is greater than an external pressure of the outside atmosphere when the fluid is being provided through the air operated diaphragm pump via the fluid passageway. The suction plenum or channel is configured to be in fluidic communication with the orifice of the housing. The indicator arrangement is configured in relation to the orifice of the housing to communicate with the suction plenum or channel, and also configured to respond or activate when the vacuum force exceeds a predetermined level and provide a visual indication when the fluid is no longer being provided through the air operated diaphragm pump via the fluid passageway. | 02-19-2015 |
| 20150064025 | High Viscosity Portion Pump - A high viscosity portion pump system has a single piston portion pump having a piston/diaphragm assembly arranged on a piston shaft forming liquid and gas chambers, which moves from a starting-position and provides high viscosity fluid from the liquid chamber when gas is received by the gas chamber; has an elastic member arranged on a retainer coupled to the shaft in a compartment in a pump housing, which moves the assembly back to the position and draws further fluid into the liquid chamber when the gas is released; and has a piston position sensor that responds to the position of the shaft and provides signaling containing information about when the assembly is in the position or completed a stroke from the position. A gas control system includes a signal processor that receives the signaling, and provides corresponding signaling containing information about when to provide or release the gas. | 03-05-2015 |
| 20150300335 | RECIPROCATING PUMP WITH ELECTRONICALLY MONITORED AIR VALVE AND PISTON - An air operated pump | 10-22-2015 |
| 20160032915 | SWITCHING ASSEMBLY FOR A HYDRAULIC PUMP JACK - A switching assembly for a hydraulic pump jack has a non-magnetic cylinder and a piston that is reciprocally movable within the interior bore of the cylinder. The piston has circumferential sealing means to engage the interior surface of the cylinder, and carries a magnetic element. A fluid source supplies a working fluid to the cylinder to move the piston within the cylinder. At least one magnetic sensor having a unique sensor value is externally mounted adjacent to the non-magnetic cylinder and senses at least a top of a piston stroke and the bottom of the piston stroke. A controller receives signals from the magnetically-actuated sensors as the magnetic element carried by the piston comes in proximity with and influences the at least one magnetic sensor. The controller controls piston positioning by selectively controlling the flow of working fluid to the cylinder. | 02-04-2016 |
| 417047000 | Rotary nonexpansible chamber-type motor | 2 |
| 20100272579 | WIND-POWER WATER SUPPLY PUMP - A wind-power water supply pump includes a housing, a rotary disk, a vane wheel, a direction control vane, a linkage, and a plurality of expandable tubes, wherein the rotary disk is rotatably mounted to a top of the housing and the vane wheel and the direction control vane are symmetrically arranged on opposite sides of the rotary disk. The vane wheel is set in driving coupling with the linkage. The vane wheel, when rotated by winds, drives repeated expansion/compression of the expandable tube. The change of the volume of the expandable tube is used to deliver water so that the consumption of human labor and additional power supply that are used to deliver water in areas where power is not readily acquired but wind power is available can be cut down. | 10-28-2010 |
| 20150030464 | METHOD FOR SECURING THE OPERATION OF A TURBOMACHINE - A method of making safe operation of a rotary assembly of a turbomachine including a turbine and a rotary machine, the method anticipating an event of exceeding a predetermined threshold speed by repetitively performing a prediction cycle including: measuring magnitudes relating to operation of the turbomachine, including real speed of rotation of its rotary assembly; based on the magnitudes, estimating driving and resisting torques applied to the rotary assembly; preparing a representative value representative of the difference between these two torques; and calculating a predicted speed of rotation for the rotary assembly at a given time horizon based on the representative value and the real speed of rotation. An action is taken on the operation of the turbomachine to limit an extent to which its rotary assembly exceeds the threshold speed in the event of the predicted speed of rotation exceeding the threshold speed. | 01-29-2015 |
