Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7540729 | Vane cell pump The disclosure relates to a vane cell pump having an inner rotor (12) and a plurality of vanes (18) which are secured in a pivotable manner to the external rotor (28) and which are displacably mounted in a radial manner in the inner rotor, essen... | 06/02/2009 |
| 7353796 | Rotary machine The rotary machine can be used as a rotary internal combustion engine and as a pneumatic or hydraulic pump. The rotary machine comprises a housing in the form of two intersecting cylinder parts of different diameters having parallel axes. A rotor is received in the ... | 04/08/2008 |
| 7344367 | Rotary compressor having a discharge valve A rotary compressor having a housing, a rotor positioned within the housing defining a compression chamber, the rotor rotatable about an axis of rotation, a discharge port in the rotor in fluid communication with the compression chamber, and a valve assembly mounted... | 03/18/2008 |
| 7247008 | Cam ring bearing for fuel delivery system A bearing assembly is provided for a fuel delivery system that includes a pump (10) having a housing that rotatably receives a rotor (20) carrying vanes (26) thereon, a cam ring (70) received between the housing and rotor (20), and... | 07/24/2007 |
| 7237432 | Vane pump, method for adjusting pump flow rate of vane pump and fuel vapor leakage check module having vane pump A rotor includes a plurality of vanes and is connected to a rotatable shaft of a motor arrangement. A casing includes a pump chamber and elongated holes. The pump chamber receives the rotor in such a manner that the rotor is eccentric to the pump chamber. Each elong... | 07/03/2007 |
| 7234344 | Vane pump and fuel vapor leakage check module having the same A vane pump includes a motor arrangement, a rotor, a casing and bolts. The motor arrangement includes a mount. The rotor includes vanes and is rotated by the motor arrangement. The casing has opposed first and second end surfaces and makes flat surface contact with ... | 06/26/2007 |
| 7217110 | Compact rotary compressor with carbon dioxide as working fluid A rotary compressor for compressing a working fluid includes a housing having an oil sump. A stationary shaft extends into the housing and includes a longitudinal passage. The longitudinal passage has an oil inlet in fluid communication with the oil sump. A working ... | 05/15/2007 |
| 7134856 | Compressed air motor The invention relates to a compressed air motor comprising a housing and a rotor rotatably mounted therein, the rotor being provided with substantially radial slots and plate-like vanes being mounted in the slots so as to be radially displaceable by the centrifugal ... | 11/14/2006 |
| 7108493 | Variable displacement pump having rotating cam ring Vane pump (10) mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring (70) is supported by a journal bearing (80). A relat... | 09/19/2006 |
| 6874996 | Compressor having independently driven members The hybrid compressor apparatus is composed of a compressor in which fluid is compressed by varying a volumetric capacity of a compression space provided between a first compression member and a second compression member, which are movable independently of each othe... | 04/05/2005 |
| 6666671 | Rotary pump A rotary pump for pumping compressible fluid comprising an eccentrically mounted rotor 20 and a stator 10. The stator 10 comprises a stator inner liner 80 that is free to rotate, driven directly or in response to rotation of the rotor 20 such that the rel... | 12/23/2003 |
| 6584963 | Throttle loss recovery turbine and supercharger A throttle loss recovery turbine and supercharger device (10) comprises a housing (12) having a movable intake port (36) and a separately movable exhaust port (38). An outer drum is rotatably placed within the housing. An inner drum (24) is rotatably disp... | 07/01/2003 |
| 6527525 | Hydristor control means A variable pump or motor is providing including a housing with inlet and outlet ports and a vaned rotor. Spool ends are provided at either end of the rotor thereby enhancing the effective sealing of the pump and its overall efficiency. Piston actuators ar... | 03/04/2003 |
| 6152718 | Positive-displacement piston mechanism having a rotary piston structure A positive-displacement piston mechanism includes a small rotor integrated with a main axis and biased against a cylindrical large rotor for holding a bearing-housing. Slant sliding slots are formed at facing places in equally divided space between the la... | 11/28/2000 |
| 6135742 | Eccentric-type vane pump The present invention relates to an eccentric-type vane pump and, in particular, to an eccentric-type vane pump being capable of generating minimum heat and noise due to frictional force produced from rotation of the vane pump. The vane pump comprises a r... | 10/24/2000 |
| 6120271 | Vane slot roller assembly for rotary vane pumping machine and method for installing same A vane slot assembly and installation method for a rotary vane pumping machine including a rotor with a rotor axis of rotation. The rotor has a vane slot with two opposing, azimuthally separated, slot side walls. The rotor has a primary slot gear rack dis... | 09/19/2000 |
| 6022201 | Hydraulic vane pump with flexible band control A variable pump or motor is providing including a housing with inlet and outlet ports and a vaned rotor, the vanes being extensible against a shape controlled freely rotatable flexible band within the housing.... | 02/08/2000 |
| 5567139 | Two rotor sliding vane compressor A two-rotor, sliding vane rotary compressor for compressing fluid containing an inner rotor, an outer rotor, means for rotating said inner rotor and said outer rotor at the same angular velocity, and at least one sliding vane disposed between the inner ro... | 10/22/1996 |
| 5235945 | Rotary engine system The power and compressor units of an internal combustion rotary engine system utilize a rotor assembly, concentrically mounted on a stationary distributor core member, for rotation about an axis eccentric to the central axis of a cylindrical cavity that p... | 08/17/1993 |
| 5135372 | Multicam and multichamber fluid machine with rotary positive sliding seals A rotary fluid machine including a plurality of fluid chambers defined by a housing and a rotor and by a plurality of lobes and seals engaging with the lobes provided on the housing and the rotor with the number of seals and lobes being unequal and fluid ... | 08/04/1992 |
| 5064361 | Rotating pneumatic vane motor with air bearing A compressed-air vane motor comprises a rotor which is mounted on anti-friction bearings and has, distributed over the periphery, location slots in which vanes are guided in a radially displaceable manner and whose outer sealing edges bear by centrifugal ... | 11/12/1991 |
| 4902209 | Sliding segment rotary fluid power translation device A multiple or compound work cycle, eccentric rotor, fluid power translation device, featuring adjustable and reversible work output capability, essentially comprising: A symmetric rotor having a plurality of fixed radially extended vanes rotating closely ... | 02/20/1990 |
| 4890990 | Rotary internal combustion engine with mutually interengaging rotatable elements A rotary engine in which the expansion pressure of a working gas is converted into a mechanical rotary movement consists of an inner engine element with an outer circumferential surface and an outer engine element which surrounds the inner element and has... | 01/02/1990 |
| 4773836 | Rotary vane pump A rotary vane pump comprising an inner rotor and an outer rotor which rotate together about eccentric axes. A pair of support shafts is attached to the inner rotor and are rotatably mounted for rotation of the inner rotor. At least one of the support shaf... | 09/27/1988 |
| 4764095 | Rotary slide compressor with thin-walled, deformable sleeve An apparatus, particularly for compressing and conveying fluids, comprising a rotor (1) and a thin-walled rotary sleeve (7) which is rotatably arranged eccentrically with respect to the axis (M1) of the rotor and which is in surface contact with the surfa... | 08/16/1988 |
| 4673343 | Rotary vane pump A rotary vane pump comprising an inner rotor and an outer rotor which rotate together about eccentric axes. A pair of support shafts are attached to the inner rotor and are rotatably mounted for rotation of the inner rotor. At least one of the support sha... | 06/16/1987 |
| 4657493 | Rotary-sleeve supporting apparatus in rotary compressor An apparatus provided in a rotary compressor comprising an air-bearing room (40) defined between the inner periphery of the center housing (22) and the outer periphery of the rotary sleeve (30) to have an air-bearing effect for floatingly supporting the r... | 04/14/1987 |
| 4648819 | Vane-type rotary compressor with rotary sleeve A rotary compressor provided with a rotary sleeve mounted in a center housing for rotation with a plurality of vanes radially slidably fitted in a rotor which is eccentrically disposed in the rotary sleeve, and an air bearing room defined between the oute... | 03/10/1987 |
| 4648818 | Rotary sleeve bearing apparatus for a rotary compressor Apparatus in a vane type rotary compressor for floatingly supporting a rotary sleeve which is mounted in a center housing for rotation with a plurality of vanes movable in a rotor, the apparatus comprising an air-bearing room defined between the inner per... | 03/10/1987 |
| 4620837 | Vane-type rotary compressor having a sleeve for rotation with vanes A vane-type rotary compressor has a rotary sleeve (30) mounted in a center housing (22) for rotation with a plurality of vanes (16) movable in a rotor (10). The rotary sleeve is floatingly supported in an air-bearing room (40) defined between the outer pe... | 11/04/1986 |
| 4616985 | Vane type compressor having an improved rotatable sleeve A vane type rotary compressor comprising a housing having a cylindrical inner wall surface, a rotatable sleeve disposed in the housing for rotation about its own longitudinal axis, a rotor disposed in the sleeve for rotation about its own longitudinal axi... | 10/14/1986 |
| 4595347 | Rotary compressor A rotary compressor is provided with a rotary sleeve mounted in a center housing for rotation with a plurality of vanes movable in a rotor which is eccentrically disposed in the rotary sleeve. An air-bearing room is defined between the outer periphery of ... | 06/17/1986 |
| 4595348 | Apparatus for supporting rotary sleeve of rotary compressor by fluid An apparatus provided in a rotary compressor comprising an air-bearing room (40) defined between the inner periphery of the center housing (22) and the outer periphery of the rotary sleeve (30) to have an air-bearing effect for floatingly supporting the r... | 06/17/1986 |
| 4594062 | Vane type rotary compressor with rotary sleeve A rotary compressor provided with a center housing and side housings, a rotary sleeve mounted for rotation in the housings and a plurality of vanes radially, slidably fitted in a rotor which is eccentrically disposed in the rotary sleeve. The rotary sleev... | 06/10/1986 |
| 4573891 | Rotary sleeve of a rotary compressor The rotary compressor according to the present invention is constructed such that a rotary sleeve is rotatably floating, and suspended within a central housing by means of a pneumatic bearing chamber. A rotor, whose vane can move freely into and out of sa... | 03/04/1986 |
| 4568257 | Rotary pump A rotary vane pump comprising an inner rotor and an outer rotor which rotate about eccentric axes. A pair of hollow support shafts rotatably support the inner rotor and serve as passages for flow of fluid to and from the inner rotor. Passages within the i... | 02/04/1986 |
| 4564344 | Rotary compressor having rotary sleeve for rotation with vanes A rotary compressor with a center housing and a rotary sleeve mounted in the center housing for rotation with a plurality of vanes radially slidably fitted in a rotor which is eccentrically disposed in the rotary sleeve, and an air-bearing room defined be... | 01/14/1986 |
| 4561835 | Floating rotary sleeve of a rotary compressor The rotary compressor according to the present invention is constructed such that a rotary sleeve is rotatably and floatingly, suspended within a central housing by means of a pneumatic bearing chamber. A rotor, into and out of which a vane can freely mov... | 12/31/1985 |
| 4558999 | Vane type pump device A vane type pump device comprising a frame, a shaft rotatably supported by the frame, a rotor secured to the shaft, a plurality of vanes slidably inserted in the rotor in the radial direction, a housing having a cylindrical inner surface whose center is d... | 12/17/1985 |
| 4553916 | Rotary force fluid pump A rotary fluid pump, comprising: a housing defining a circular cylindrical pumping chamber; at least one blade positioning ring mounted for rotation around the periphery of the pumping chamber; an eccentrically disposed drive shaft for slidably engaging a... | 11/19/1985 |
