Did You Know...
...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7393190 | Discharge valve system of scroll compressor A discharge valve system of a scroll compressor comprises: a fixed scroll having a discharge hole and discharge bypass holes; a discharge valve assembly mounted at the fixed scroll, for opening and closing the discharge hole by a pressure difference; and an integral... | 07/01/2008 |
| 6913448 | Load-regulating device for scroll type compressors A load-regulating device for scroll type compressors comprising a compressor housing, a bracket body, a partition block, a gliding block, a pair of scrolls and a plurality of air chambers, wherein the gliding block being coupled with the pair of scrolls for defining... | 07/05/2005 |
| 6863504 | Fluid pump relief valve A pump head for a fluid pump driven by a motor includes an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. A relief valve cavity formed in the pump head housing includes a first p... | 03/08/2005 |
| 6725687 | Drink dispensing system A drink dispensing system having sets of faucet dispensers, ice storage bins adjacent to the sets of faucet dispensers, respectively, a common carbonator and circulation pumps associated with fluid circuits provide circulating flow through cold plates defining botto... | 04/27/2004 |
| 6478550 | Multi-stage capacity-controlled scroll compressor A first bypass valve (27) that sets discharge capacity to 60% is provided in a first scroll 21 of an asymmetrical spiral-type scroll compressor. Also, a second bypass valve (40) that makes suction side and discharge side communicated with each other so th... | 11/12/2002 |
| 5807081 | Combination valve for screw compressors Normally closed valve structure is located in a fluid path between the suction and discharge sides of a compressor. The valve structure opens upon a small pressure differential when the higher pressure is in the normal suction side which is indicative of ... | 09/15/1998 |
| 5798941 | Surge prevention control system for dynamic compressors A surge prevention control system for use with a dynamic compressor provides a multiple module controller for operating an anti-surge valve to bypass flow around the dynamic compressor. The multiple module controller includes a PID control module and a ra... | 08/25/1998 |
| 5642989 | Booster compressor system A booster compressor system modulates discharge pressure with a proportional regulator in fluid communication between the compressor discharge and a servo control for a valve to the compressor inlet. The servo control comprises a double acting piston conn... | 07/01/1997 |
| 4930994 | Radial piston pump An electric motor driven radial piston pump for a motor vehicle brake system with slip control is disclosed wherein the radial piston pump includes two parallel working circuits drivable by the drive motor. The working pressure of the first working circui... | 06/05/1990 |
| 4840545 | Scroll compressor relief valve In a rotary compressor, a relief valve for providing refrigerant at suction gas pressure to the discharg port when the rotary compressor is operated in the reverse rotation direction. The relief valve includes in the preferred embodiment a passage for pro... | 06/20/1989 |
| 4411599 | Drain fitting with built-in pump A drain fitting has a vessel formed with a laterally open housing outlet, at least one inlet, and an internal seat at the outlet. A pump is provided in the vessel and has a pump housing secured to the seat and having a pump output extending into the outle... | 10/25/1983 |
| 4236876 | Multiple compressor system A multi-compressor system comprising first and second stage motor-compressor units, a low pressure line for transmitting vapor from a source thereof to the first stage unit, an intermediate pressure line for transmitting vapor between the first and second... | 12/02/1980 |
| 4047665 | Spray control system The control system is utilized in a high pressure liquid spraying system including an internal combustion engine, a pump driven by the engine, a source of liquid connected to the pump and a spray nozzle assembly connected by a high pressure conduit to the... | 09/13/1977 |
