Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7726951 | Fuel control module A fuel control system is provided in a single compact modular unit. The unit includes a motor driving a highly accurate cam-operated double-acting piston metering pump, both of which are contained in a liquid fuel environment. As the liquid fuel is pumped it works t... | 06/01/2010 |
| 7670117 | Fluid metering device A fluid metering device for monitoring flow of fluid is provided. The fluid metering device comprises: an electric motor; and a housing having a manifold section, a motor adapter plate and a pressure retaining container, said pressure retaining container encompassin... | 03/02/2010 |
| 7387501 | Control valve for variable displacement compressor To provide a control valve which is capable of maintaining the minimum operation of a variable displacement compressor, by causing a valve section thereof to be fully opened, irrespective of the expanded or compressed state of a bellows, even when the suction pressu... | 06/17/2008 |
| 7367783 | Rotating fluid machine A rotary valve for switching supply passages, and discharge passages of high-temperature and high-pressure steam for a rotor rotatably supported at a casing is constructed by making a fixed side valve plate and a movable side valve plate abut to each other on a slid... | 05/06/2008 |
| 7364408 | Crank case shut off valve The invention provides a compressor with a shut off valve disposed between the crank case and the suction cavity. The valve is moveable between an open and closed position in response to the pressure in the discharge cavity of the compressor. The valve is an on/off ... | 04/29/2008 |
| 7322800 | System and method of providing hydraulic pressure for mechanical work from an engine lubricating system The method provides hydraulic pressure for mechanical work from an engine lubricating system in an internal combustion engine by supplying oil to an engine lubrication gallery for lubricating the engine and to at least one variable oil demand accessory. Each of the ... | 01/29/2008 |
| 7320577 | Dual pump transmission A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted, having a cooling fan mounted on the primary or secondary input shaft on the opposite side of the pulley used to engage the prime mov... | 01/22/2008 |
| 7318709 | Pump valve assembly A valve assembly is disclosed generally comprising first and second valve plates mounted between the housing for a pump mechanism and a cover, the first plate having flexing flaps corresponding to apertures in the second plate, and the second plate having flexing fl... | 01/15/2008 |
| 7290991 | Dual oil supply pump An automotive engine oil pump assembly having first and second pump mechanisms contained within a common housing. A shaft rotatably supported in the housing drives the pump mechanisms in a conventional manner. The pump mechanisms are offset in phase to reduce flow p... | 11/06/2007 |
| 7287517 | DME fuel supply device for diesel engine In the DME fuel supply device for a diesel engine, the time necessary to retrieve DME fuel remaining in the injection system after stopping the diesel engine into the fuel tank can be reduced. In a non-injection state, a three-way valve (71) is controlled to ... | 10/30/2007 |
| 7165950 | Two-stage pressure relief valve A two-stage pressure relief valve for use with hydraulic systems is disclosed. The two-stage pressure relief valve has a first stage that relieves increases in hydraulic system pressure over the normal operating pressure and up to a selected threshold pressure level... | 01/23/2007 |
| 7121811 | Capacity control valve for variable displacement compressor The object is to provide a capacity control valve for a variable displacement compressor, which is not adversely affected by pressure from a pressure-regulating chamber. The cross-sectional area of a valve hole of a high pressure-side valve seat for introducing disc... | 10/17/2006 |
| 7090472 | Pump or motor with interconnected chambers in the rotor Pump or motor having a rotor with chambers with a through rotation variable volume which are connectable via switches to either a first line connection or a second line connection. During switching between the line connections, the volume of the chamber changes and ... | 08/15/2006 |
| 7070017 | Rotating apparatus for construction machine A swing mechanism for a construction machine having a grease bath seal. A grease bath can be disposed on a vehicular base carrier of the machine, and can be coupled with a swing frame. The grease bath seal can then act to prevent intrusion of pollutants or other for... | 07/04/2006 |
| 7033143 | Pumping system with clutch and associated by-pass This invention relates to a pumping system. The design of the system is such that bi-directional operation can be achieved using a significantly smaller and hence lighter unit than those currently available. It uses the direction of rotation of the drive shaft to co... | 04/25/2006 |
| 7018181 | Swashplate pump A piston pump assembly with a rotatingly driven swashplate in driving relationship with a rocker arm and piston engaged with one end of the rocker arm. A spring urges the rocker arm and piston into contact with an annular ring carried by a bearing in the swashplate.... | 03/28/2006 |
| 7014428 | Controls for variable displacement compressor A control system for a variable displacement compressor uses a mechanical valve to minimize energy consumption in an air conditioning system. The control system can also provide instantaneous indications to the vehicle controller of air conditioning power consumptio... | 03/21/2006 |
| 7004729 | Compressor with pot-shaped housing and housing sealing cover A compressor, in particular for air conditioning systems in motor vehicles, having a housing, a housing sealing cover, a drive shaft with bearings and a drive device for pistons that are displaced back and forth. The drive device transfers the rotational displacemen... | 02/28/2006 |
| 6984113 | Oil pressure operated pump for marine steering gears with a valve set shell with valves separately capable of assembly with the valve housing An oil pressure operated pump for marine steering gears includes a multiple piston oil pressure operated pump controlled by a steering wheel, a valve housing mounted under the pump, a bottom cover closing the valve, the valve housing and the cover each including cha... | 01/10/2006 |
| 6973921 | Fuel pumping system and method A fuel pumping system that includes a pump drive is provided. A first pumping element is operatively connected to the pump drive and is operable to generate a first flow of pressurized fuel. A second pumping element is operatively connected to the pump drive and is ... | 12/13/2005 |
| 6957604 | Axial-piston drive system with a continuously adjustable piston stroke The invention relates to an axial piston drive with a continuously adjustable piston stroke, which comprises a drive shaft (10, 12) on which a swash plate (16) is supported in a crank chamber (14) in such a way as to be tiltable and displaceable... | 10/25/2005 |
| 6955045 | Oil pump system Variable displacement pump pumps oil to one or the other ports of an oil operated vehicle wheel motor to drive a lawn mower. ... | 10/18/2005 |
| 6916158 | Radial piston pump A piston pump including an inlet manifold, and outlet manifold, and a piston ring sandwiched between the inlet and outlet manifolds. The inlet manifold has a first face and a second face with at least one outlet formed in the second face. The outlet manifold has a f... | 07/12/2005 |
| 6901911 | Pump and hydraulic system with low pressure priming and over pressurization avoidance features A hydraulic system, such as a fuel injection system, includes a fixed displacement pump with at least one pump piston. A sleeve surrounds each pump piston and provides the method by which fluid displaced by the pumping stroke of the pump piston is directed either to... | 06/07/2005 |
| 6893228 | Axial piston pump with fluid bearing arrangement A pump includes a stationary pump housing having a central longitudinal axis and a housing chamber, a rotating pump shaft extending through the pump housing and into the housing chamber, a rotating barrel fixed to the pump shaft and including a plurality of pump cha... | 05/17/2005 |
| 6893231 | Hydraulic device The invention relates to a hydraulic device provided with a housing having at least a first line connection and a second line connection and, if appropriate, further line connections, a rotor which can rotate in the housing and chambers which are alternately connect... | 05/17/2005 |
| 6802697 | Variable-delivery, fixed-displacement pump A pump includes a pump housing, a rotating shaft extending through the pump housing, a plurality of pistons, and a plurality of control sleeves. Each piston may be at least partially, slidably contained within a respective piston sleeve. The pistons may also be be o... | 10/12/2004 |
| 6736048 | Hydrostatic axial piston machine A hydrostatic axial piston machine has a drum-like cylinder block which is supported in a manner fixed against rotation on a driving or output shaft and is provided concentrically and parallel to its center line with cylinder boreholes in which axially displaccable ... | 05/18/2004 |
| 6699017 | Restriction structure in variable displacement compressor A seal is provided between the housing assembly of a variable displacement compressor and a rotary shaft to seal inside the housing assembly. The seal is retained in a retaining chamber, which is separated from a suction chamber and a control pressure cha... | 03/02/2004 |
| 6651545 | Fluid translating device It is desirable to deliver only the fluid that is used to do useful work and not waste energy. In the subject arrangement, selected ones of a plurality of pistons are held at their top dead center positions when delivery therefrom is not needed. This is a... | 11/25/2003 |
| 6572341 | Variable displacement type compressor with suction control valve A variable displacement type compressor has a tiltable swash plate and pistons in cylinder bores. The displacement of the compressor is controlled by changing an inclination angle of the swash plate. A first valve is arranged to open and close the suction... | 06/03/2003 |
| 6551072 | Variable displacement compressors Compressor has a driving unit. The driving unit is provided within a crank chamber and decreases the discharge capacity when a control valve opens a control passage to increase the pressure within the crank chamber. The throttle passage delivers oil with ... | 04/22/2003 |
| 6537037 | Variable displacement compressor and air conditioning apparatus A variable displacement compressor is operated efficiently by avoiding inefficient conditions. The compressor varies its displacement using a control valve for which an external duty control procedure is performed. A target value for controlling the displ... | 03/25/2003 |
| 6517331 | Oil inlet for a wobble plate pump A displacement pump includes a rotatable drive shaft; a low-pressure hydraulic fluid reservoir; at least one piston containing a piston cavity; and a drive plate connected with the drive shaft. The drive plate includes an inlet passage and a fill slot. Th... | 02/11/2003 |
| 6510779 | Electronic bore pressure optimization mechanism An electronic bore pressure optimization mechanism for dynamically varying the cylinder block piston bore pressure profile in a multiple piston hydraulic unit includes a valve means having a variable orifice disposed in the end cap for metering fluid betw... | 01/28/2003 |
| 6481977 | Swashplate type variable-displacement compressor A swashplate type variable-displacement compressor includes a compressor housing defining therein a crank chamber, a refrigerant suction chamber, a refrigerant discharge chamber, and a low-pressure refrigerant passage connected to an evaporator outlet, an... | 11/19/2002 |
| 6439857 | Axial piston compressor An axial piston compressor produces air supplied to an air system of a vehicle, typically a heavy duty truck through a plurality of pistons held within a stationary block, and the movement of the pistons is predicated through the control of a pivotal swas... | 08/27/2002 |
| 6439858 | Control valve for variable capacity compressors A control valve for a variable capacity compressor, which comprises a valve housing having a valve port formed between an inlet port and an outlet port, a valve disposed inside the valve housing for controlling the flow rate through the adjustment of open... | 08/27/2002 |
| 6413055 | Swashplate position assist mechanism A swashplate assist mechanism for dynamically varying swashplate moments in a multiple piston hydraulic unit includes a valve means disposed in the swashplate and defining a variable orifice for metering fluid from at least one of the pistons; and means f... | 07/02/2002 |
| 6390784 | Solenoid protector for a variable displacement compressor A compressor has a swash plate located in a crank chamber and tiltably mounted on a drive shaft. A piston is operably coupled to the swash plate and is located in a cylinder bore. The inclination of the swash plate is varied according to the difference be... | 05/21/2002 |
