Class / Patent application number | Description | Number of patent applications / Date published |
417297000 | Expansible chamber pump distributor operation modified | 10 |
20110091335 | CALCULATION OF DOWNHOLE PUMP FILLAGE AND CONTROL OF PUMP BASED ON SAID FILLAGE - Methods and apparatus are provided for determining pump fillage, using data arrays of pump plunger position with respect to time and/or pump plunger load with respect to time. In this manner, well operators may be able to accurately monitor the pump fillage and control the pump accordingly. | 04-21-2011 |
20120121443 | Air compressor having enlarged compartment for receiving pressurized air - An air compressor includes a cylinder housing, an outlet receptacle disposed on the cylinder housing, and a partition formed between the cylinder housing and the outlet receptacle and having an air passage formed in the partition, a piston slidably received in the cylinder housing and coupled to a motor for moving relative to the cylinder housing in a reciprocating action in order to generate a pressurized air, and a spring-biased check valve engaged with the partition for selectively blocking the air passage of the partition, the outlet receptacle includes an inner diameter “D | 05-17-2012 |
20120177510 | HIGH-SPEED CHECK VALVE SUITABLE FOR CRYOGENS AND HIGH REVERSE PRESSURE - A check valve is disclosed that includes a base having a porous first surface, a keeper coupled to the base, and a flexible leaf with a first section that is fixedly coupled between the keeper and the base and a second section that is cantilevered from the first section. The leaf has a first position when the leaf is fully in contact with the base and a second position when the leaf is fully in contact with the keeper. The leaf is configured to sealingly cover the porous first surface when the leaf is in the first position. The leaf is in an unstressed configuration when in the first position, and a maximum stress in the leaf is less than the yield stress when the leaf is in the second position. The check valve is particularly suited for use with cryogenic fluids such as liquid hydrogen and liquid oxygen. | 07-12-2012 |
20150139826 | Adjusting Opening Times of a Cam Actuated Valve, Reciprocating Compressor and Method - Cam actuated valves for compressors including mechanisms for changing an instant when the cam actuated valve is opened and/or a time interval during which the cam actuated valve is in an open state within the time range of a compression cycle. A reciprocating compressor has: a body including a compression chamber; a cam having an oblong portion, being located inside the body and being configured to be rotated around a rotation axis, to perform a rotation during each compression cycle; an actuating element located inside the body and configured to receive a linear displacement or an angular displacement due to the oblong portion of the cam; and a valve located on a flow path of the fluid toward or from the compression chamber and configured to be switched to an open state by the actuating element. The reciprocating compressor also includes a controller configured to adjust timing of the valve. | 05-21-2015 |
20150377234 | RELIEF DEVICE FOR OIL CIRCUIT OF ENGINE - A relief device including: an oil pump; an upstream flow passage provided from a discharge section side of the oil pump to an engine; an oil-pressure relief valve relieving oil by a valve body moving due to oil pressure; and a temperature-sensitive relief valve B relieving oil by detecting an oil temperature and opening and closing steplessly. The oil-pressure relief valve and the temperature-sensitive relief valve are disposed in parallel in the upstream flow passage. A portion of the pump housing of the oil pump is formed in an integrated fashion with a casing of an oil circulation mechanism. | 12-31-2015 |
417298000 | Inlet valve | 5 |
20100040487 | Device for Adjusting the Flow Rate of a Mobile Oil-Injected Screw-Type Compressor - Improved device ( | 02-18-2010 |
20110268590 | FLUID WORKING MACHINES AND METHODS - A fluid working machine, operable to carry out a motoring cycle under at least some circumstances, comprises a controller ( | 11-03-2011 |
20140234131 | Pressure Monitoring Device for Controlling a Compressor - A pressure monitoring device for use in an air system of a vehicle and for controlling a compressor comprises an input air connector for connection to an air tank and for receiving an input pressurer from the air tank. A first signal air connector can output a pneumatic ON-load signal for adjusting the compressor to an operation mode. A second signal air connector can output a pneumatic OFF-load signal for adjusting the compressor to a non-operation mode. | 08-21-2014 |
20140294619 | ELECTRONIC INFINITE STEP CONTROLLER ACTUATOR - An unloader assembly and method for unloading a compressor, with the unloader assembly including one or more fingers configured to engage one or more valve elements of a suction valve of the compressor. The unloader assembly also includes a biasing member coupled to the one or more fingers and configured to bias the one or more fingers downward such that the one or more fingers follow the one or more valve elements, and an actuating rod coupled to the one or more fingers and extending longitudinally therefrom. The unloader assembly further includes a first reservoir containing a smart fluid and adapted to receive the actuating rod, and a coil disposed at least one of proximal to and within the first reservoir, with the coil being configured to produce a field when an electrical current is supplied to the coil, to change one or more viscoelastic properties of the smart fluid. | 10-02-2014 |
20140377089 | CAPACITY MODULATION SYSTEM FOR COMPRESSOR AND METHOD - A compressor is provided and may include a first compression mechanism, a first valve plate including a first port, and a first manifold including a first cylinder having a first piston disposed therein. The first piston may be movable between a first position opening the first port and a second position closing the first port. The compressor may additionally include a second compression mechanism, a second valve plate including a second port, and a second manifold including a second cylinder having a second piston disposed therein. The second piston may be movable between a first position opening the second port and a second position closing the second port. A valve assembly may move one of the first and second pistons into the first position while maintaining the other of the first and second pistons in the second position. | 12-25-2014 |