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| Number | Title | Issue Date |
| 7146967 | Fuel supply apparatus for engine and method thereof When a pressure of fuel supplied to an engine is higher than a target, the fuel is carried in a reverse direction by rotating a fuel pump in reverse, and in accordance therewith, the fuel pressure is made to fall with good responsiveness. ... | 12/12/2006 |
| 7028495 | Refrigerant cycle apparatus For a purpose of realizing a refrigerant cycle apparatus capable of exactly detecting a pressure reverse phenomenon caused in a compression element of a compressor of a multistage compression type, in the refrigerant cycle apparatus in which the multistage compressi... | 04/18/2006 |
| 6536217 | Liquid fuel reverse purge Devices and methods for liquid fuel reverse purge on shutdown of turbines are provided. The device and method may utilize a liquid fuel reverse purge control system that includes an induction motor associated with a pump, together with fuel system solenoi... | 03/25/2003 |
| 6354813 | Hydraulically activated three-way-valve A three-way-valve is actuated by fluid which moves membranes.... | 03/12/2002 |
| 5452989 | Reverse phase and high discharge temperature protection in a scroll compressor Protective apparatus in a scroll compressor, in the form of a valve assembly, is operative to prevent compressor damage from reverse direction rotation of the scroll compression mechanism or the development of abnormally high discharge gas temperatures. T... | 09/26/1995 |
| 5432265 | Process for the continuous removal of products from high pressure systems The continuous removal of solid products from a high-pressure system is achieved by operating a high-pressure pump in reverse to gradually reduce pressure at the exit line to atmospheric pressure. This process allows solid products to exit the system whil... | 07/11/1995 |
| 5271722 | Automotive control system for hydrostatic pumps An automotive control system for hydrostatic pumps includes a hydraulic circuit with an automotive orifice located upstream of the main hydrostatic loop with replenishing check valves and downstream of the fill pump. The location of the automotive orifice... | 12/21/1993 |
| 5219275 | Hydraulic door actuator An improved pump for providing pressurized fluid to a pressurized fluid operating device for opening and closing a door comprising having a pump housing with a pump chamber therein; a rotatable pumping element within the pump chamber; a pair of passages a... | 06/15/1993 |
| 5186613 | Reverse phase and high discharge temperature protection in a scroll compressor A low side scroll compressor is protected from both the potentially damaging effects of improper electrical hookup and the development of high discharge temperatures by the disposition of a valve member in a passage which communicates between the suction ... | 02/16/1993 |
| 5161957 | Hydraulic door actuator An improved pump for providing pressurized fluid to a pressurized fluid operating device for opening and closing a door comprising having a pump housing with a pump chamber therein; a rotatable pumping element within the pump chamber; a pair of passages a... | 11/10/1992 |
| 4828462 | Pressure detecting system for a hydraulic device A system for detecting when the pressure on a bi-directional hydraulic device, such as a motor or a pump, exceeds a predetermined pressure. The device is of the type having two meshing gears mounted to rotate in a housing. Fluid inlet and outlet ports are... | 05/09/1989 |
| 4251192 | Rotary pump with symmetrical by-pass and rotor with resiliently mounted vanes A rotary pump for pumping liquids is provided. The pump is compact with a bypass system built into the pump housing. The pump is symmetrical about a center line so it can pump liquids in opposite directions simply by reversing the rotation of the drive sh... | 02/17/1981 |
