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| Number | Title | Issue Date |
| 7335001 | Apparatus and method for controlling operation of a reciprocating compressor An apparatus and a method for controlling an operation of a reciprocating compressor can improve efficiency of a compressor by reconciling an operation frequency with a mechanical resonant frequency. The apparatus includes a mechanical resonant frequency calculating... | 02/26/2008 |
| 7293967 | Pump apparatus A constant rate discharge pump comprises a rotary shaft which is rotatable together with a rotary driving source, a piston which is displaceable in an axial direction in a pump chamber of a body by the rotation of the rotary shaft and which has a tapered surface hav... | 11/13/2007 |
| 7263978 | Dual pressure on demand automotive fuel pump An internal combustion engine (14) has an associated controller (18) controlling operation of the engine. A fuel pump (10) delivers fuel to the engine at more than one pressure (300 kPa, 800 kPa). The fuel pump includes a fuel inlet (34) ... | 09/04/2007 |
| 7231910 | Method for setting the feed rate of a fuel pump unit, which sucks up fuel from a fuel tank, and fuel pump unit for the method The invention relates to a method for setting the feed rate of a fuel pump unit, which sucks up fuel from a fuel tank 8, as a function of the feed pressure, which is built up by the fuel pump unit, in an outlet 25 of the fuel pump unit, which outlet le... | 06/19/2007 |
| 7057318 | Electric motor An electric motor comprises a stator 13, a rotor 11, windings on tlhe stator, a sleeve 15 at one end of the motor for supporting or defining a bearing for the rotor and for attachment to a fuel pump. The sleeve 15 forms the sole means of ... | 06/06/2006 |
| 6866483 | High-pressure cleaning device High-pressure cleaning device with an electric motor and a pump for conveying a cleaning fluid, with a plunger, which is displaceable by the cleaning fluid in dependence on its pressure or its flow rate, and with an electric switch, which is actuable by the plunger ... | 03/15/2005 |
| 6685438 | Apparatus and method for controlling operation of reciprocating compressor In an operation control apparatus of a compressor, a current, a voltage an d a TDC, etc. applied to a compressor are detected, a speed and a TDC are constantly controlled so as to place an operation point of the compressor within a high efficiency operati... | 02/03/2004 |
| 5749709 | Positive displacement pump including modular pump component A positive displacement pump comprising a housing which defines a pump inlet chamber in fluid communication with a pump inlet port and a pump outlet chamber in fluid communication with a pump outlet port. Disposed within the housing is a wobble plate whic... | 05/12/1998 |
| 5613834 | Positive displacement pump including modular pump component A positive displacement pump comprising a housing which defines a pump inlet chamber in fluid communication with a pump inlet port and a pump outlet chamber in fluid communication with a pump outlet port. Disposed within the housing is a wobble plate whic... | 03/25/1997 |
| 5540556 | Positive displacement pump including modular pump component A positive displacement pump comprising a housing which defines a pump inlet chamber in fluid communication with a pump inlet port and a pump outlet chamber in fluid communication with a pump outlet port. Disposed within the housing is a wobble plate whic... | 07/30/1996 |
| 5482439 | Power breaker for a compressor for automobiles with a curved plug and wrinkled control disk A power breaker for a compressor for automobiles including a base provided with a first conducting member and a second conducting member, a circular plate disposed within the base and having a center hole, a resilient disc arranged on the circular plate a... | 01/09/1996 |
| 5464327 | Water pressure control system A water pressure control system in which the pressurizing pump is turned on only in response to low pressure but is turned off only in response to low water flow rates. Water flow is detected with a magnetic switch displaced by water movement. After the p... | 11/07/1995 |
| 5464328 | Regulating and controlling device for a fluid pressure booster installation A regulating and controlling device for a fluid pressure booster installation includes a motor-driven pressure generating unit, a check valve, a relief valve and a pressure switch. The pressure switch has a first cylinder-piston arrangement for connecting... | 11/07/1995 |
| 5415528 | Solution pumping for maximizing output while minimizing uneven pumping pressures A solution pumping system is disclosed which is embodied as a disposable pump cassette including a self-contained positive displacement pump, and an associated pump driver including a reciprocable pump piston for driving the pump of the cassette. This sys... | 05/16/1995 |
| 5358385 | Dual diaphragm pump with adjustable discharge side pressure trip switch A new structure for an efficient electric pump is described. The electric pump of this invention mainly comprises a cover plate, a top cover and a housing to make up the outside appearance. Its inside consists of a dual piston device, an eccentric transmi... | 10/25/1994 |
| 5352096 | Air compressor for automobiles This invention relates to an air compressor and in particular to one which includes a valve controlling device having a check valve and a cover. The check valve is fixedly mounted on said cover and is connected with a pipe. The check valve including a spr... | 10/04/1994 |
| 5125800 | Portable electric air compressor for automotive vehicle A vehicle compressor unit having an adjustable outlet pressure at which it will be de-activated. A compressor is operated by an electric motor from the vehicle's electrical supply. A pressure release valve detects the pressure from the outlet of the compr... | 06/30/1992 |
| 5051063 | Leakage-type pressure regulator for a hydraulic circuit The leakage-type pressure regulator for a hydraulic circuit, including at least one reservoir of fluid under low pressure (5), a pump (11) and an accumulator of fluid under high pressure (9), comprises: a pusher (19) projecting from a chamber (3) connecte... | 09/24/1991 |
| 4789308 | Self-contained electric fuel pump with output pressure regulation A self-contained electric fuel pump includes a pair of coaxially spaced inlet and outlet end caps joined by a case to form a pump housing. A d.c. motor includes an armature journaled for rotation within the housing and coupled to a pump mechanism for feed... | 12/06/1988 |
| 4476889 | Control valve and switch assembly A control valve and switch assembly for automatic control of the pressure in a high pressure fluid system, such as in car washing apparatus, and comprising a housing having a fluid chamber therein providing communication between a pressure fluid source, s... | 10/16/1984 |
