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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7284572 | Valve A plate valve, especially for diaphragm pumps, having a valve plate (8), a valve seat (15), and a valve chamber bounded by a valve housing is provided, with the valve plate being held at the edges thereof. The valve plate (8) is preset under ten... | 10/23/2007 |
| 7284566 | Valve arrangement for guiding a liquid against a gas pressure gradient Valve arrangement for guiding a liquid against a gas pressure gradient. The valve arrangement includes first, second and third pressure areas connected in series. An intake opens into the first pressure area. An outlet opens into the third pressure area. Flow check ... | 10/23/2007 |
| 7063520 | Suction valve assembly of reciprocating compressor In a reciprocating compressor including a piston slide-inserted into the compression space of the cylinder, having a gas path therein, inducing a fluid into the compression space through the gas path and varying a volume of the compression space while performing a l... | 06/20/2006 |
| 5609476 | Reciprocating compressor with flow passage closed by valve pre-biased to an open position A reciprocating compressor includes a piston reciprocating in a chamber. A valve plate disposed at one end of the chamber includes a fluid inlet orifice and a fluid discharge orifice. Each orifice is covered by a valve in the form of a resilient material ... | 03/11/1997 |
| 5277553 | Valve-controlled displacer unit having valve triggering The invention relates to a valve-controlled positive displacement pump having valve triggering, which permits the forced opening or keeping open of an inlet valve, operating in the manner of a non-return valve, of a displacer working space, so that the di... | 01/11/1994 |
| 4642037 | Reed valve for refrigeration compressor A suction valve for a small refrigeration compressor is in the form of a thin sheet metal reed having a sealing portion adapted to make sealing contact with a valve seat around the suction port on a valve plate. The valve reed is formed from a valve sheet... | 02/10/1987 |
| 4632145 | Lifting device for the closure plate of compressor valves A lifting device for controlling the movement of the closure plate of a compressor valve comprises a first gripper part which is connected to the compressor valve to be movable toward and away therefrom; a regulating spring which is in contact with the fi... | 12/30/1986 |
| 4537566 | Valve assembly for a compressor An improved valve plate assembly is disclosed herein which is particularly well suited for use in compressors and particularly refrigeration compressors employing pressure responsive reed type valving. The present invention provides several arrangements w... | 08/27/1985 |
| 4143998 | Fluid pump A fluid pump having a chamber, a diaphragm cooperating with the chamber and actuated by a solenoid, and inlet and outlet check valves communicating with the chamber. Another valve communicating with the chamber and interposed in the flow path of fluid thr... | 03/13/1979 |
| 4127362 | Regulating the flow capacity of a positive displacement pump by controlling inlet valve means A piston pump includes a fluid flow control system positioned between the fluid intake duct and the intake aperture of the piston cylinder, the control system including a cylindrical sleeve which is in fluid communication with the intake duct, a valve pis... | 11/28/1978 |
