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 |
| 8182244 | Vacuum pump provided with a device for its deactivation A vacuum pump has inside the pumping chamber valves intended to control the operation by opening and closing during the suction and delivery cycle of the pump. The valves or parts connected thereto are formed at least in part by a ferromagnetic material. A magnetic ... | 05/22/2012 |
| 8147220 | Compressor having compression element welded to closed container at three or more welding points and suction tube neither parallel nor perpendicular to a straight line connecting any two of the welding points A compressor includes a closed container and a compression element welded together at least three, preferably six, welding points. A suction tube for sucking refrigerant gas is attached to the closed container. A first direction and a second direction that are assoc... | 04/03/2012 |
| 7967579 | Hermetic compressor with spot joining portions fixing a motor stator to a cylindrical portion of a casing where a clearance is secured therebetween A hermetic compressor is disposed with an annular motor stator, a motor rotor, a casing and plural spot joining portions. The motor rotor is disposed such that it may freely rotate in a space inside the motor stator. The casing includes a cylindrical portion. The cy... | 06/28/2011 |
| 7942648 | Air pump Lifetime required of mobile-use fuel cells is secured and prolonged, stabilized pump performance is maintained by preventing bearing seizure and abnormal wear. The shaft (101) of a pump mechanism section (100) and the shaft (201) of a motor sect... | 05/17/2011 |
| 7837449 | Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigerant unit There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engag... | 11/23/2010 |
| 7802972 | Rotary type compressor A valve guard for restricting the amount of deformation of a valve disc has a main body part abuttable with the back surface of the valve disc, and a fixation part extending to outside of a receding part. Upon mounting the valve guard to an end plate part, the fixat... | 09/28/2010 |
| 7766628 | Sealed compressor with structure on lower housing shell to assist weld placement A compressor is provided with a dimple and a lower end cap to receive a positioning fixture pin to position the lower end cap prior to a welding operation. The use of the dimple ensures the lower end cap is properly positioned when welding occurs. In the past, lower... | 08/03/2010 |
| 7762792 | Compressor There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engag... | 07/27/2010 |
| 7618242 | Hermetic sealed compressor A front head of a cylinder and a mounting plate are tightly fixed to each other. The mounting plate is welded to a casing. The mounting plate is made of steel containing 2.0% or less of carbon therein. Furthermore, a stator core of a compressor motor is welded to th... | 11/17/2009 |
| 7600986 | Filtering device for multistage compression type rotary compressor There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements w... | 10/13/2009 |
| 7591637 | G-rotor pump Disclosed is a G-rotor pump in which a lid and a bottom of a pump housing are made of plastic. A spacer that supports the bottom is produced as a single piece with the lid, whereby the G-rotor pump can be embodied in a particularly inexpensive manner. ... | 09/22/2009 |
| 7578660 | Hermetic compressor A compression mechanism has a cylinder, a suction passage and a discharge passage. The suction passage of a cylinder is connected to a suction pipe. The discharge passage is open to an inner space of a sealed housing. A discharge gas is discharged through a discharg... | 08/25/2009 |
| 7563081 | Gas compressor A gas compressor includes a housing with suction and discharge ports, and a gas-compressing mechanism housed in the housing to compress a gas sucked through the suction port and discharge the compressed gas via the discharge port. The mechanism includes a cylinder d... | 07/21/2009 |
| 7563080 | Rotary compressor A rotary compressor includes a rotation mechanism, an annular piston and a blade. The rotation mechanism has a cylinder with an annular cylinder chamber. The annular piston is contained in the cylinder chamber eccentrically from the cylinder and sectioning the cylin... | 07/21/2009 |
| 7540724 | Compression member and vane of a compressor A compressor having a compression member whose upper surface crosses an axial direction of a rotary shaft and is inclined continuously between a top dead center and a bottom dead center and which is disposed in a cylinder to be rotated by a rotary shaft and which co... | 06/02/2009 |
| 7520733 | Multistage compression type rotary compressor There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements w... | 04/21/2009 |
| 7520732 | Pump A pump, particularly a vane pump or roller cell pump, whereby the vane pump or roller cell pump is provided with a two-stroke contour ring, with a rotor, inside of which vanes or rollers are mounted in a manner that enables them to be radially displaced, with at lea... | 04/21/2009 |
| 7435062 | Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigeration unit There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engag... | 10/14/2008 |
| 7431573 | Device for generating a reducing agent/air mixture The apparatus for generating a mixture of reducing agent and air has a pumping agent feed pump having a pump housing and a mixing chamber into which reducing agent and air pumped by the feed pump can be introduced; the mixing chamber is embodied in a mixing chamber ... | 10/07/2008 |
| 7413419 | Water-injected screw compressor The invention relates to a water-injected screw compressor, comprising a compressor element (2) with a housing (7) which borders a compression chamber (8) in which two rotors (9, 10) are installed, which, by means of an axle ends (13, ... | 08/19/2008 |
| 7407372 | Progressing cavity pump or motor A progressing cavity pump or a motor includes, in one embodiment, an outer tube 12, an inner tube 14, and a plurality of apertures 16. A pair of annular seal glands 18 seal the stator material to the outer tube. The stator material is inj... | 08/05/2008 |
| 7396217 | Fuel pump to be installed inside fuel tank A fuel pump for supplying fuel drawn from a fuel tank into an internal combustion engine comprises a rotor, a rotation shaft, bearing members and a drawing force generative means. The rotation shaft revolves integrally with the rotor. The bearing members support bot... | 07/08/2008 |
| 7377755 | Multi-stage rotary compressor A multi-stage rotary compressor to reduce a driving load and prevent a malfunction due to an abrupt pressure rising. In the compressor of the type including first and second compressing units mounted in a hermetic casing thereof to compress a gas, the gas being prim... | 05/27/2008 |
| 7361001 | Hydraulic vane pump A hydraulic vane pump includes a plurality of members forming a recession and an orifice in fluid communication with one another and with rotating vane cells at an inlet sector of the pump. Air entrained in the vane cells is exhausted through the recession and the o... | 04/22/2008 |
| 7354250 | Variable capacity rotary compressor A variable capacity rotary compressor having a slot defined between eccentric bushes, a latch pin fitted to a rotary shaft so as to be latched to the slot, and a restraint unit for restraining the eccentric bushes upon rotation of the rotary shaft. The restraint uni... | 04/08/2008 |
| 7351043 | Horizontal compressor end cap A substantially horizontal compressor including a housing having a main body portion with an open end. An end cap is secured to the main body portion with the end cap being provided with a plurality of apertures. The hermetic terminal body of the compressor is seala... | 04/01/2008 |
| 7347136 | Airless sprayer with hardened cylinder An airless sprayer for paint or the like consists of an electric drive unit connected to a piston. Driven by the electric drive unit, the piston reciprocates within the cylinder, thus spraying the paint or the like. Because of the close tolerance between the piston ... | 03/25/2008 |
| 7293966 | Variable capacity rotary compressor A variable capacity rotary compressor including a housing, the housing including two compression chambers, the two compression chambers having different capacities; a rotating shaft rotatably provided in the two compression chambers; two eccentric units respectively... | 11/13/2007 |
| 7287970 | Roots compressor A roots compressor has a housing, a rotary shaft, a rotor and a layer. The housing defines a pump chamber, a suction port and a discharge port. The suction port and the discharge port adjoin to the pump chamber. The rotary shaft is rotatably supported by the housing... | 10/30/2007 |
| 7285881 | Superconducting device comprising a cooling unit for cooling a rotating, superconductive coil The supraconductor device contains a rotor, which can rotate about a rotational axis, with a supraconductive coil in a heat conducting coil support. The coil support comprises a central cylindrical cavity. A cooling head, which is located outside of the rotor, of a ... | 10/23/2007 |
| 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 |
| 7255541 | Fluid pump A fluid pump includes a housing, a drive source, a rotary unit and a pumping mechanism. The drive source is accommodated in the housing and includes a rotary member for rotation. The rotary unit includes the rotary member and a rotary shaft, which is operatively con... | 08/14/2007 |
| 7253107 | Pressure control system A pressure control system allows gas to be evacuated out of a semiconductor process chamber at a substantially constant rate of mass flow. A gas line connects the process chamber to a vacuum pump. A controllable valve having a variable sized opening is positioned be... | 08/07/2007 |
| 7252487 | Multi-stage rotary compressor having rollers which are different in thickness In a high inner pressure type multistage compression system rotary compressor whose object is to improve sealability of a first rotary compression element and which includes a second rotary compression element having a displacement volume being smaller than that of ... | 08/07/2007 |
| 7247005 | Oil seal arrangement A motor-driven gear pump assembly includes a rotary shaft rotatably mounted in a housing, and a pump mounted on the rotary shaft. The pump has a pressure chamber. A high-pressure seal is disposed around the shaft between the pump and the motor. A low-pressure seal i... | 07/24/2007 |
| 7229257 | Horizontal type compressor A horizontal type compressor comprising: a differential pressure plate for dividing an inside of a casing into a high pressure chamber and a lower pressure chamber and thus maintaining an oil level of the high pressure chamber to be higher than that of the lower pre... | 06/12/2007 |
| 7223081 | Variable capacity rotary compressor A variable capacity rotary compressor to prevent eccentric bushes from rotating faster than a rotating shaft, and includes upper and lower compression chambers having different interior capacities thereof, and the rotating shaft with upper and lower eccentric cams b... | 05/29/2007 |
| 7217106 | Electro-hydraulic power steering apparatus An electro-hydraulic power steering apparatus includes: a motor having a rotational shaft and provided with a bearing for rotatably bearing the rotational shaft; a hydraulic pump disposed at one end of the rotational shaft of the motor and driven by the motor; a fir... | 05/15/2007 |
| 7207786 | Fuel pump with filter-absent safety valve and universal inlet and outlet Fuel pump assembly 10 includes a filter 42 that rests on ledge 48, between the pump housing 22 and inlet cap 56. Filter detector 50 has a valve engager 62 for opening the check valve 58 and bearing feet 52 | 04/24/2007 |
| 7197892 | Encapsulated electrically driven compressor The invention relates to an encapsulated electrically driven compressor for a motor vehicle and has an object to prevent electrical parts for connecting an electric motor housed in a hermetically sealed housing to an outside electric control circuit from being easil... | 04/03/2007 |
