Class / Patent application number | Description | Number of patent applications / Date published |
137565130 | Fluid pressure responsive | 39 |
20080245425 | Pressure washer - A pressure washer is provided including a housing. A pump is contained within the housing for pressurizing fluid received through a water inlet port and for pumping the pressurized fluid through an outlet port. An application wand is connected to the water outlet for outputting a pressurized stream of fluid. At least one wheel is supported on the housing so as to enable rolling movement of the housing. A first handle is arranged on the housing for movement between a retracted position in which a gripping portion of the handle is arranged relatively closer to the housing and an extended position in which the gripping portion of the handle is arranged relatively further away from the housing. | 10-09-2008 |
20090266429 | HYDRAULIC PRESSURE CONTROL APPARATUS - A hydraulic pressure control apparatus includes a primary regulator valve that regulates a pressure discharged from an oil pump to form a line pressure that is used as an original pressure for a hydraulic pressure that is supplied to each element, and a secondary regulator valve that regulates a hydraulic pressure downstream of the primary regulator valve to form a secondary pressure. Two pilot pressures (first modulator hydraulic pressure, control hydraulic pressure from a duty solenoid) are supplied to the secondary regulator valve. The secondary regulator valve is configured in such a manner that when one of the pilot pressures changes, a change in the one of the pilot pressures is absorbed by the other pilot pressure. | 10-29-2009 |
20100018595 | Inflation Control Apparatus for an Inflatable Object with Two Chambers - Apparatus for maintaining differential internal fluid pressure in a dual fluid chamber object where it is desired for one chamber to have greater internal pressure than the other includes a sensor for generating a differential signal indicating the difference in pressure between the chambers, a pressure sensor for generating a pressure signal indicating the pressure inside the chamber desired to have less pressure, a comparator for generating a first output when the differential signal is less than a predetermined minimum differential value, a second comparator for generating a second output when the pressure signal is less than a predetermined minimum pressure value, where the predetermined minimum pressure value biased by the first output, and blowers coupled to the respective chambers and responsive to said first and second outputs respectively. | 01-28-2010 |
20100236648 | FILLING MACHINE FOR HIGHLY COMPRESSED GAS - The present invention refers to a filling machine for highly compressed gas, comprising: an electric driver, a reduction gearbox, a driving shaft, an eccentric driving mechanism, an high-compression mechanism, a cylinder manifold and a framework, wherein the eccentric driving mechanism consisting of at least two eccentric driving wheels is mounted on the driving shaft, the high-compression mechanism consists of at least two oscillating type compression gas cylinders connected in series by a plurality of one-way valves and hoses, and a slip ring, a piston rod and a piston are joined into an integral block wherein the slip ring is fitted over the eccentric driving wheel and the other end of the piston rod is connected to a gas cylinder barrel so as to be fitted over a supporting shaft; the supporting shaft is provided in the framework and the framework is provided with a cylinder manifold on the top thereof, which is provided with a pressure switch, a pressure gauge and a safety valve; the outer circumferential portion of the compression gas cylinder is provided with bump-and-depression textures for heat elimination, the framework is provided with a cooling fan therein, and the framework is provided with a transparent cover; the electric driver drives the reduction gearbox to transfer rotation movement to the driving shaft so as to rotate the eccentric driving wheels, and subsequently drives the integral block of the slip ring, the piston rod and the piston to reciprocate linearly with respect to the gas cylinder barrel in order to compress gas so that the output gas subjected to multistage compression can be filled into a high pressure gas tank. | 09-23-2010 |
20100307618 | Bellows-type water tap - A bellows type water tap which can control the water outflow and consume no electricity, consists essentially of a main valve, a guide pipe, a foot pump, a bellows, one first regulating valve, one second regulating valve, a safety spring, a push rod, an adjusting block, a handle, a needle valve and a diaphragm. When the bellows is inactivated, pressure on above of the diaphragm is higher than the bottom and seals the water outlet and when bellows is expanded, the reaction presses down the needle valve and opens a water passage, lowering the pressure of upper portion of the diaphragm and opening the water outlet for water discharging. | 12-09-2010 |
20110259452 | DIFFERENTIAL PRESSURE CONSTANT VOLUME FLOW AIR SAMPLER - Disclosed is a differential pressure volume flow air sampler that measures temperature in a collection cavity, differential pressure between the measured ambient pressure and air pressure in a collection cavity. These parameters are used to calculate the volume air flow across a collection disk using a processor which adjusts a blower to maintain a substantially constant volume air flow through said air sampler from the surrounding atmosphere. | 10-27-2011 |
20110297259 | OIL PUMP SYSTEM FOR AN ENGINE - An oil pump system can include a housing defining a pocket for an oil pump, a cavity, and a pump outlet passage connecting the pocket to the cavity. Low and high pressure relief passages can be defined by the housing for selectively fluidly coupling the cavity to a pressure relief area. A pressure relief valve positioned in the cavity can comprise first and second ends, first and second internal bores, and a slot in communication with the first internal bore. A biasing member positioned in the second internal bore can biasing the valve to a first position. The valve can translate to a second position aligning the slot with the low pressure relief passage to selectively provide low pressure relief to the oil pump, and can translate to a third position aligning the slot with the high pressure relief passage to selectively provide high pressure relief to the oil pump. | 12-08-2011 |
20110308650 | Flow Control System for a Micropump - A flow control system is disclosed for use with a micropump for pumping a fluid to be administered through a catheter. The flow control system includes a first body portion, a membrane and a second body portion. The first body portion has a membrane-receiving inner surface, an inlet aperture in fluid communication with the micropump, and a mating surface disposed about the membrane-receiving inner surface and configured to mate with a mating surface of the second body portion. The membrane has a reinforcement annulus configured to be received by the first body portion membrane-receiving inner surface and a domed portion oriented to be movable from a closed position, in sealable communication with the inlet aperture, and an open position, in spaced apart relation from the inlet aperture. The membrane is oriented and sized to be biased in the closed position. The second body portion has a membrane-receiving inner surface, an outlet aperture configured to communicate with the catheter, and a mating surface disposed about the membrane-receiving inner surface and configured to mate with the mating surface of the first body portion. At least a portion of the membrane reinforcement annulus is positioned within the inner surface of the first body portion. The first body portion mating surface is positioned and maintained in sealed relation with the second body portion mating surface. Operation of the micropump causes the fluid to (a) flow from the micropump to the first body inlet aperture, (b) exert a pressure sufficient to move the membrane from the closed position to an open position, (c) flow around the membrane and through the second body outlet aperture and into the catheter. | 12-22-2011 |
20120261010 | Hydraulic System for Construction Machinery - The present disclosure relates to a hydraulic system for construction machinery, which is applied to construction machinery provided with a steering unit for controlling steering of equipment, and a main control valve for controlling operating of a work tool, and includes: a main pump for discharging working fluid supplied to the steering unit and the main control valve; a load sensing pressure sensor for sensing a load sensing pressure of the steering unit; a priority valve installed in a supply passage for the working fluid discharged from the main pump, for dividing and supplying the working fluid discharged from the main pump to the steering unit and the main control valve, to correspond to the load sensing pressure; an auxiliary pump for supplementing working fluid to the supply passage supplying the working fluid divided by the priority valve to the steering unit; an electric motor for operating the auxiliary pump; and a controller for operating the electric motor when the load sensing pressure is greater than a reference load sensing pressure, and additionally supplying working fluid discharged from the auxiliary pump the steering unit. | 10-18-2012 |
20130133765 | FUEL PUMP ASSEMBLY - A fuel pump assembly may include a housing and a fuel pump within a fuel pump cavity. The fuel pump may include a motor, a pumping element driven for rotation by the motor, a pump body that maintains the position of the pumping element relative to the motor and the housing, and a flexible seal. The seal may be disposed between the pump body and the housing to provide a fluid tight seal between them. A portion of the seal may be disposed radially outwardly of a distal end of the pump body to radially position the pump body within the fuel pump cavity and a portion of the seal may be disposed axially outwardly of the distal end of the pump body to axially position the pump body within the fuel pump cavity. | 05-30-2013 |
20130133766 | HYDRAULIC PRESSURE CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION - A hydraulic pressure control apparatus for an automatic transmission may include an oil tank, a first hydraulic pump fluid-connected with the oil tank for generating a first hydraulic pressure, a second hydraulic pump fluid-connected with the first hydraulic pump for generating a second hydraulic pressure higher than the first pressure, a torque converter and a lubrication portion fluid-connected to a first low pressure supply line to receive the first hydraulic pressure, a first high pressure supply line fluid-connected to the second hydraulic pump and to a powertrain, a switching valve bifurcated from the first low pressure supply line and fluid-connected to the first hydraulic pump and both the torque converter and the lubrication portion, and a feedback line fluid-connected to the first high pressure supply line to the switching valve so as to selectively open or close the switching valve according to the second hydraulic pressure. | 05-30-2013 |
20140158236 | HYDRAULIC PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION - A hydraulic pressure supply system of an automatic transmission for a vehicle may include a low-pressure hydraulic pump receiving oil stored in an oil pan through an input line, generating low hydraulic pressure using the oil, and supplying the low hydraulic pressure to a low pressure portion through a low-pressure line, and a high-pressure hydraulic pump increasing a portion of the low hydraulic pressure to high hydraulic pressure and supplying the high hydraulic pressure to a high pressure portion through a high-pressure line. | 06-12-2014 |
20140166134 | Pump with Reduced Number of Moving Parts - Embodiments provided herein describe pumps and methods for pumping fluids. A first fixed valve has a passageway extending therethrough with first and second ends. The first fixed valve is configured to allow fluid flow through the passageway towards the second end thereof and at least partially restrict fluid flow towards the first end thereof. A pumping structure is in fluid communication with the second end of the passageway of the first fixed valve. A second fixed valve has a passageway extending therethrough with third and fourth ends. The second fixed valve is configured to allow fluid flow through the passageway towards the fourth end thereof and at least partially restrict fluid flow towards the third end thereof. The third end of the passageway of the second fixed valve is in fluid communication with the pumping structure and the second end of the passageway of the first fixed valve. | 06-19-2014 |
20140196804 | HYDRAULIC CONTROL ARRANGEMENT - A hydraulic control arrangement ( | 07-17-2014 |
20140209193 | Charged Particle Beam Instrument - A charged particle beam instrument is offered which has a specimen pre-evacuation chamber. An outflow flow rate adjusting valve ( | 07-31-2014 |
20140318647 | Sizing Tank with Electro-Mechanical Controlled Water Flows - A vacuum sizing tank configured to provide controlled fluid flow. A fluid control system and a vacuum sizing tank utilizing electronic controls to create and maintain controllable fluid flow within the tank. Flow meters may measure the flow in and out of the tank to maintain consistency. Temperature meters may measure the temperatures for each of the flows to maintain consistency. An electronic circuit may compare the values with preset values. Any difference between the values may trigger change by varying the voltage applied to a variable speed water pump. | 10-30-2014 |
20150041008 | NON-ELECTRONIC METHODS AND APPARATUS FOR DETECTING WASH PUMP CAVITATION IN A DISHWASHER - A cavitation sense fill system for a dishwasher system is disclosed. The dishwasher system includes a fluid circulation system for circulating water in a tub, wherein the fluid circulation system includes at least one recirculation pump and at least one fill valve. The cavitation sense fill system includes a pressure switch for monitoring an output pressure of the at least one recirculation pump, wherein the pressure switch deactivates the at least one fill valve when the output pressure satisfies at least one predefined criteria. | 02-12-2015 |
20150068624 | MUD PUMP PRESSURE SWITCH - A pressure switch safety system includes a pressure switch for mounting to a mud pumping system. The pressure switch can be moved from a pressure switch open position to a pressure switch closed position when the pressure within the mud pumping system reaches an excess trigger pressure. The excess trigger is greater than the pressure required to activate a pressure relief valve system of the mud pumping system. An alarm and a timer are actuated when the pressure switch is moved from the pressure switch open position to the pressure switch closed position. The timer has a preset time interval. The system has a mud pump shut down control module that will shut down the mud pumping system after the preset time interval has elapsed. | 03-12-2015 |
20150300219 | HYDRAULIC OIL SUPPLY APPARATUS - A hydraulic oil supply apparatus includes an oil pump discharging hydraulic oil, a common oil passage through which the discharged hydraulic oil flows, a first oil passage branched from the common oil passage to supply the hydraulic oil to a valve opening and closing timing control apparatus, a second oil passage supplying the hydraulic oil to a main gallery, and a flow control valve decreasing a volume of hydraulic oil flowing through the first oil passage with an increase of hydraulic pressure of the hydraulic oil discharged from the oil pump so as to increase a volume of hydraulic oil flowing through the second oil passage. In the hydraulic oil supply apparatus, hydraulic pressure generated from the hydraulic oil passing through a valve body of the flow control valve is applied to the valve body as a force against a force of a biasing member that biases the valve body. | 10-22-2015 |
20160076532 | REFUELING SYSTEM FOR SUPPLYING FUEL TO HYDRAULIC FRACTURING EQUIPMENT - A refueling system for supplying fuel to hydraulic fracturing equipment. The refueling system having a main fuel source and at least one pressurization unit. The pressurization unit having a pump, a motor, a motor fuel source, a supply coupling device and a return coupling device. The refueling system having sensors in the one or more supply fuel lines and in the one or more return fuel lines for receiving flow rate information and pressure information, wherein the flow rate information and pressure information is compared to preset limits and a message is transmitted when the flow rate information and pressure information falls below or exceeds the preset limits to adjust rates of operation. | 03-17-2016 |
20160076533 | REFUELING METHOD FOR SUPPLYING FUEL TO HYDRAULIC FRACTURING EQUIPMENT - A refueling method for supplying fuel to hydraulic fracturing equipment by installing a main fuel source at a fractionation operation, connecting the main fuel source to hydraulic fracturing equipment to provide downhole fluids to the well, and connecting at least one pressurization unit to the main fuel source. The method includes using a valve element to stop fuel flow from the motor fuel tank when the main fuel source supplies the fuel to the supply coupling device and automatically starts fuel flow from the motor fuel tank to the pump when a system failure prevents the main fuel source from suppling the fuel to the supply coupling device and using the return fuel line with the return coupling device for the transfer of the fuel to the motor fuel tank when a system failure prevents the main fuel source from supplying the fuel to the supply coupling device. | 03-17-2016 |
20160146338 | HYDRAULIC CONTROL SYSTEM FOR VEHICLES (AS AMENDED) - A hydraulic control system for vehicles is provided. A switching valve ( | 05-26-2016 |
20160169843 | PRESSURE SENSING AND FLOW CONTROL IN DIFFUSION-BONDED PLANAR DEVICES FOR FLUID CHROMATOGRAPHY | 06-16-2016 |
20160178204 | MEANS AND ARRANGEMENT FOR FUEL ICING PROTECTION | 06-23-2016 |
20160195083 | ELECTRONIC LOAD SENSE CONTROL WITH ELECTRONIC VARIABLE LOAD SENSE RELIEF, VARIABLE WORKING MARGIN, AND ELECTRONIC TORQUE LIMITING | 07-07-2016 |
137565140 | And pilot valve | 3 |
20110083762 | HYDRAULIC SYSTEM HAVING A BACKPRESSURE CONTROL VALVE - A hydraulic system for a machine is disclosed. The hydraulic system has a source of pressurized fluid, a fluid actuator, and a tank. The hydraulic system utilizes a directional control valve to direct flow between the source, the actuator, and the tank. The hydraulic further utilizes a variable backpressure control valve to control the system backpressure. | 04-14-2011 |
20110088797 | Fluid-pressure actuator unit - A fluid-pressure pump | 04-21-2011 |
20160090716 | HYDRAULIC VALVE - A valve for a hydraulic system is provided including a work port channel, a load sense channel, and a tank channel. Additionally, a body cavity extends between the work port channel and the tank channel, and a spool is movably positioned in the body cavity. The body cavity defines an inner surface and the spool defines an outer surface. The inner surface of the body cavity and the outer surface of the spool together define a interface between the body cavity and the spool that extends outwardly from a longitudinal axis, such that an increased pressure differential between the work port channel and a load sense channel increases a sealing force, allowing for a more responsive valve in the hydraulic system with less leakage. | 03-31-2016 |
137565150 | Direct response valve | 11 |
20090020174 | SYSTEMS AND METHODS FOR GENERATING HYDROGEN GAS - Systems and methods are provided for hydrogen generation utilizing two or more liquid fuel components, using a fuel delivery system comprising a single reversible or bi-directional pump co-operable with flow control means comprising passive or active valves to deliver two or more fuel components to a mixing zone, reaction zone, or reaction chamber of a hydrogen generation system. The pump is operable in a forward direction to deliver one fuel component, and in a reverse direction to deliver a second fuel component. Control of the pump speed, direction and duty cycle of the pump in continuous or pulsed modes provides for delivery of first and second fuel components in desired proportions, to control hydrogen generation. The system also allows for dilution, mixing and flush cycles to be provided using a single pump, reducing the number of active elements required for fuel delivery and flow control in systems using two or more liquid fuel components. | 01-22-2009 |
20090242049 | PARTS ASSEMBLY - A parts assembly includes a housing including a first part assembly hole on which a first apparatus component is assembled, the first apparatus component being fixed to the housing by means of a caulking for forming a caulking portion by a deformation of a bearing surface of the housing on which the first apparatus component is seated. The housing includes a second part assembly hole provided in the vicinity of the caulking portion and on which a second apparatus component is assembled. The housing includes a sacrificial deformation portion deformed by a force applied to the housing when the bearing surface is deformed by means of the caulking, the sacrificial deformation portion attenuating a force propagated to a portion including the second part assembly hole where the second apparatus component is assembled. | 10-01-2009 |
20090255595 | APPARATUS AND METHOD FOR INTRODUCING AIR INTO A HYDROPNEUMATIC RESERVOIR - Apparatus for introducing air ( | 10-15-2009 |
20110253235 | Arrangement For Adjusting An Aircraft Propeller - An arrangement for the hydraulic adjustment of the propeller blades of an aircraft propeller ( | 10-20-2011 |
20120186673 | AIRCRAFT ENGINE FUEL SYSTEM - An aircraft fuel system is provided and includes a metering valve having inlet and outlet sides to monitor fuel flow from the inlet to the outlet side, a check valve that, when opened, allows fuel to flow toward the inlet side during start and climb conditions and, when closed, prevents such fuel flow and an ejector pump, which is operably disposed between the check valve and the metering valve, and which, with the check valve closed, pumps fuel toward the inlet side during idle conditions. | 07-26-2012 |
20120186674 | Energy production system using combustion exhaust - An energy production and pressurized exhaust gas storage system including two combustion chambers aligned in opposition to each other, each of the two combustion chambers having a reciprocating power piston. A compression chamber is situated between the two combustion chambers and it includes a reciprocating compression piston. A shaft connects all of the pistons together. A solvent tank is connected to the two combustion chambers to receive the exhaust gas carbon dioxide. The solvent is preferably water maintained at about 32 degrees Fahrenheit and with a pressure above the water surface of about 100 pounds per square inch. Upon combustion, a pressurized carbon dioxide storage chamber receives compressed carbon dioxide from the compression chamber. Check valves are used to enable inflow of carbon dioxide to the compression chamber from the solvent tank and outflow of pressurized carbon dioxide in the compression chamber to storage. | 07-26-2012 |
20120261011 | ENERGY REDUCTION MODULE USING A DEPRESSURIZING VACUUM APPARATUS FOR VACUUM PUMP - The present invention relates to a decompression module using a gas stream and a vacuum apparatus for manufacturing a semiconductor device, in which the venturi effect due to a carrier gas stream is used to decompress an exhaust-side pressure of a vacuum pump without requiring an additional power, thereby being capable of appropriately reducing the load of the vacuum pump and the power consumption. | 10-18-2012 |
20120325348 | SYSTEM AND METHOD FOR FUEL SYSTEM HEALTH MONITORING - A method of monitoring operation of a fuel system includes urging a fuel flow from a fuel source toward a pressure regulating valve via a fuel pump. A pressure of the fuel flow is detected at the pressure regulating valve, and a pump speed required to produce a selected pressure at the pressure regulating valve is detected. The pump speed is compared to a range of acceptable pump speeds, and an operational status of the fuel pump is determined based on a result of the comparison. | 12-27-2012 |
20130213503 | HYDRAULIC CONTROL ARRANGEMENT - A hydraulic control arrangement includes a common variable displacement pump configured to supply pressure medium to two consumer groups. The pressure level of a control block assigned to one of the consumer groups is set to a different pressure level than that of a further control block assigned to the other consumer group. | 08-22-2013 |
20130213504 | FLUID CONTROL APPARATUS AND FUEL SUPPLY SYSTEM - A fluid control apparatus compact in size and high in performance, and a fuel supply system provided with the fluid control apparatus. The first valve opening direction in which a valve body of a relief valve is separated from a valve seat and the second valve opening direction in which a valve body of a discharge valve is separated from a valve seat are opposite to each other. The first valve opening drive pressure to have the valve body of the relief valve separated from the valve seat and the second valve opening drive pressure to have the valve body of the discharge valve separated from the valve seat are different from each other. The valve seat is provided integrally with the valve body. The fluid control apparatus is provided with a displacement limiting mechanism that limits the displacement of the valve body. | 08-22-2013 |
20160169252 | HYDRAULIC CIRCUIT SUPPLY SYSTEM | 06-16-2016 |