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| Number | Title | Issue Date |
| 6817841 | High-pressure fuel pump for internal combustion engine with improved partial-load performance A fuel injection system in which only one pump element at a time can aspirate fuel. As a result, it is attained that even in partial-load operation, all the pump elements are in operation, and as a consequence the smooth operation of the engine in partial-load opera... | 11/16/2004 |
| 6808086 | Paste ejection apparatus In a seal mechanism which constitutes a port switching portion in a pump mechanism of a paste ejection apparatus that ejects paste, and which prevents leakage of the paste from a seal portion between a plunger block rotating with a plunger and a fixed seal block (be... | 10/26/2004 |
| 6572344 | Compact pump or motor with internal swash plate A fluid translating device is provided that includes a first member having fluid inlet/outlet ports and a second member having a plurality of pistons disposed therein secured to a stationary central shaft. A camplate and port plate is disposed in the flui... | 06/03/2003 |
| 6514569 | Variable volume positive displacement dispensing system and method Aspects of the present invention are directed to methods and apparatus for dispensing material onto substrates. A dispensing system is provided for dispensing a metered quantity of dispensing material onto a substrate. The dispensing system includes a dis... | 02/04/2003 |
| 5702239 | Air pump with dual air intakes An air pump with dual air intakes includes a pump body having an enclosed end with a securing point at its inner side for retaining a diaphragm, and an open end connecting to a cover. The cover has a securing point at its inner side for retaining a diaphr... | 12/30/1997 |
| 5681154 | Air pump with dual air intakes An air pump with dual air intakes includes a hollow pump body, a securing cover, a piston rod, a piston, an air outlet, a check valve, an air duct and a handle. The pump body has one end connected to the air outlet and the check valve. The peripheral rim ... | 10/28/1997 |
| 5302094 | Tube switch for a double-cylinder sludge pump A tube switch for a double-cylinder sludge pump is provided including a swing pipe, a wearing ring and an elastic member. The swing pipe is adapted to swivel in front of a center plate and includes an extension portion having an inner surface. The wearing... | 04/12/1994 |
| 5067882 | Dual-acting, reciprocating piston pump A dual-acting, reciprocating piston pump is provided which comprises a pump body formed with a passageway having an inlet and a discharge outlet which receives a piston assembly including a plunger rod carrying a valve plate or spider, a shovel rod carryi... | 11/26/1991 |
| 4785975 | Manually actuated pump A manually actuated pump that dispenses liquid substances in measured quantities from the contents of bottles and containers which is comprised of a handle capable of being axially displaced against the action of a spring, a cylinder having a pump space w... | 11/22/1988 |
| 4445826 | Peristaltic pump apparatus A peristaltic pumping system in which a length of elastic tubing connected at opposite ends to storage spools is advanced alternately in opposite directions through a pinch roll pair and in which opposite ends of the elastic tubing are connected in fluid ... | 05/01/1984 |
| 4193744 | Compressor valve A compressor valve for use in a piston type compressor having an annular tapered shaped valve element spring-urged into a valve seat formed between the intake suction side of the valve body and an annular passage formed behind the seat which communicates ... | 03/18/1980 |
