Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7118324 | COcompressor A CO2 compressor for an air conditioner of a motor vehicle is suggested having a sealing device, assigned to the driveshaft of the CO2 compressor, which is implemented as a sliding ring. The CO2 compressor features a lubrication devi... | 10/10/2006 |
| 7063464 | Reciprocating piston mechanism A reciprocating piston mechanism for an air-conditioning compressor in a motor vehicle has a housing, a rotary driven shaft, a shaft seal assembly with a gliding ring seal, at least one radial shaft bearing, and at least one axial shaft bearing. At least the radial ... | 06/20/2006 |
| 7004729 | Compressor with pot-shaped housing and housing sealing cover A compressor, in particular for air conditioning systems in motor vehicles, having a housing, a housing sealing cover, a drive shaft with bearings and a drive device for pistons that are displaced back and forth. The drive device transfers the rotational displacemen... | 02/28/2006 |
| 6953325 | Safety device to limit pressure in an axial-piston compressor housing A safety device limits the pressure in an axial-piston compressor with variable piston displacement. The compressor has as wobble plate or swash plate whose tilt angle can be variably controlled by the pressure differential between the high pressure in the discharge... | 10/11/2005 |
| 6928919 | Wobble plate piston mechanism In a wobble plate piston-drive mechanism, the inclination of the ring-shaped wobble plate is adjustable through an articulated connection of the wobble plate to the shaft by means of an axially movable guiding device and a driver arm that reaches into an engagement ... | 08/16/2005 |
| 6896786 | Method and device for producing wear resisting surfaces A process for the production of wear-resistant, coated surfaces includes the use of at least two electrodes connected to a voltages source which are mounted in, or border, a reaction space through which an electrolyte flows in which the surface to be coated is locat... | 05/24/2005 |
| 6886355 | Air-conditioning system An air-conditioning system with a refrigerant medium circulating in a refrigerant loop has a variable-stroke compressor with a high-pressure outlet chamber, a drive chamber and an intake suction chamber. A first valve regulates a first flow of refrigerant medium fro... | 05/03/2005 |
| 6817847 | Rotary pump having a hydraulic intermediate capacity with first and second connections The invention relates to a pump with a pump chamber with a rotary-driven pump element mounted, at least one suction and at least one pressure connection opening into the pump chamber and with circulating pumping cells whose volume can be changed, which are connected... | 11/16/2004 |
| 6775975 | Pump with a flow-regulating valve device and an injector device A power-steering pump for a motor vehicle is used to pump fluid to an additional fluid-driven device such as a hydraulic motor of a ventilation fan. The pump has a flow-regulating valve and an injector device, where a jet of excess fluid streaming off the flow-regul... | 08/17/2004 |
| 6428285 | Hydraulic delivery device The invention relates to a hydraulic delivery device with a displacement unit which delivers a medium from a suction connection under output pressure to a pressure connection, connectable with a consumer, and under consumer pressure, and a regulating devi... | 08/06/2002 |
| 6116391 | Method of and apparatus for actuating the torque transmitting system and the transmission in the power train of a motor vehicle The friction clutch between the engine and an automated transmission in the power train of a motor vehicle are operated and controlled by an actuator which effects changes in the extent of engagement of the clutch as well as the selection of and shifting ... | 09/12/2000 |
