Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7490541 | Compressor A compressor comprises a compressing mechanism which compresses fluid including a lubricant, a separation chamber into which the fluid compressed by the compressing mechanism is introduced and in which at least a portion of the lubricant included in the fluid is sep... | 02/17/2009 |
| 7277476 | Determining the correlation between received samples and available replica samples The invention relates to a method, a processing unit and a system for determining the correlation between samples of a received code modulated signal and samples of replica code sequences. In order to simplify and accelerate the process, it is proposed that the rece... | 10/02/2007 |
| 7186096 | Swash plate type variable displacement compressor A swash plate type variable displacement compressor includes a cylinder block defining a cylinder bore. A housing is fixed to the cylinder block and defines a crank chamber. A drive shaft is rotatably supported by the housing and the cylinder block. A swash plate is... | 03/06/2007 |
| 7134381 | Refrigerant compressor and friction control process therefor There is provided a refrigerant compressor including compressor parts having sliding portions slidable relative to each other and a refrigeration oil applied to the sliding portions of the compressor parts. At least one of the sliding portions of the compressor part... | 11/14/2006 |
| 7117782 | Compressor and method of lubricating the compressor A compressor is provided for guiding lubricating oil separated from the discharged refrigerant by an oil separator to a radial bearing supporting a drive shaft through an oil supply hole. A rotating member that rotates together with the drive shaft is provided adjac... | 10/10/2006 |
| 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 |
| 7114434 | Reciprocating compressor A reciprocating compressor, comprising a cylinder block (1) having a cylinder bore (12) formed therein, a rear head (3) fixed to the cylinder block through a valve plate (2) and having a suction chamber (26) and a discharge chamber... | 10/03/2006 |
| 7073427 | Hydrostatic machine with compensated sleeves A hydrostatic machine with a cylinder block (6), within which sleeve holes (28b) are arranged, in which sleeves (28) sit, surrounding piston bores (28a) in which pistons (29) are mounted, such as to be displaced back ... | 07/11/2006 |
| 7012264 | Lithographic apparatus and device manufacturing method A lithographic apparatus is provided. The apparatus includes an illumination system that conditions a beam of radiation, an article support member that supports an article to be placed in a beam path of the beam of radiation on the article support, and a movable car... | 03/14/2006 |
| 6912948 | Swash plate compressor A swash plate compressor comprises a swash plate rotated by a drive shaft and a piston that reciprocates in a cylinder bore by the rotation of the swash plate. The piston includes a tail and a pair of shoes retained in the tail. The shoes sandwich an outer periphery... | 07/05/2005 |
| 6910406 | Axial piston compressor In an axial piston compressor for a refrigerant, in particular for a vehicle air conditioner, with a housing (12) in the interior of which is disposed at least one bearing (22, 24, 26, 48, 56, 58, 60, 64), with an output conduit (34) for the com... | 06/28/2005 |
| 6865980 | Method and apparatus for returning the drain oil of a hydraulic motor The invention relates to a method and apparatus for returning the oil drained from a working pressure space of a hydraulic motor into a motor casing to an oil line, which is connected to the motor and which is in communication via a divider with intra-motor flow cha... | 03/15/2005 |
| 6862975 | Apparatus for lubricating piston type compressor A lubricating structure in a piston type compressor has a housing, a device for being lubricated and a rotary shaft. The housing defines an accommodating chamber and a suction pressure region. The device for being lubricated is located in the accommodating chamber. ... | 03/08/2005 |
| 6431841 | Compressor with a part of a spring chamber in a rear housing A compressor is provided in which the arrangement and the position of a spring chamber, in which a coil spring biasing a main shaft is accommodated, are designed and the various designs of the compressor is possible. The compressor comprises a main shaft ... | 08/13/2002 |
| 6393964 | Compressor having piston rotation restricting structure with lubricating inclined guide surface The compressor having pistons and a swash plate, the pistons including head portions reciprocatingly inserted in the cylinder bores and neck portions connected to the head portions. A piston rotation restricting structure includes a first rotation restric... | 05/28/2002 |
| 6394763 | Lubrication fins and blades for a swash plate type compressor A variable displacement swash plate type compressor which incorporates an impeller attached to a drive shaft, and a plurality of blades for, efficiently directing lubricating oil to a shaft seal. The impeller provides a mist of lubricating oil to the cran... | 05/28/2002 |
| 6321635 | Swash plate type compressor in which lubricating oil is effectively supplied to a shoe mechanism interposed between a piston and a swash plate In a swash plate type compressor in which a shoe mechanism (23a and 23b) is slidably interposed between a swash plate (21) and a piston (22) to convert a rotating motion of the swash plate to a reciprocating motion of the piston, lubricating oil is effect... | 11/27/2001 |
| 6174140 | Oil recovery device for compressors A compressor having a device for recovering lubricating oil. The compressor includes a discharge chamber and a muffler, which attenuates the pressure pulsation of refrigerant gas sent out from the discharge chamber. The muffler is defined by a muffler bas... | 01/16/2001 |
| 6158325 | Swash plate type variable displacement compressor A swash plate type compressor has a rotating assembly of a drive shaft, a drive plate mounted on the drive shaft and a swash plate unit linked with the drive plate through a hinge mechanism. The drive plate has a circular disk portion and a hinge supporti... | 12/12/2000 |
| 6112641 | Lubrication system for high-pressure liquid pumps with cylinders of vertical axis High pressure pump, particularly for water, containing a sealed chamber containing, partially in an oil bath, an inclined disc keyed onto the shank of a socket bush arranged to receive a drive shaft, the bush being received in a hole in the base of the ch... | 09/05/2000 |
| 6055899 | Micro-mechanical actuator In a micro-mechanical actuator having, disposed on a substrate, an actuator housing with a channel and a pressure chamber formed at one end of the channel, a piston with a guide rod projecting from one end and a piston rod projecting from the other end in... | 05/02/2000 |
| 6053091 | Plunger pump A plunger pump comprising a plunger pump section (34) including a pumping chamber (60), a plunger (36) extending through the pumping chamber, a high pressure side-seal (58) and a low pressure side-seal (56) provided in slide contact with the plunger for p... | 04/25/2000 |
| 6038960 | Reciprocating pistons of piston-type compressor A piston-type fluid displacement apparatus includes a housing enclosing a crank chamber, a suction chamber, a suction chamber, and a discharge chamber. The housing includes a cylinder block wherein a plurality of cylinder bores formed, a drive shaft rotat... | 03/21/2000 |
| 5979297 | Perfected piston pump in particular a radial-piston pump for internal combustion engine fuel The pump has a number of cylinders arranged with their respective axes at a predetermined angular distance about a drive shaft; and a number of piss, each sliding inside a respective cylinder. The inner radial end of each piston is fitted with a pad eng... | 11/09/1999 |
| 5971717 | Axial piston machine having a cooling circuit for the cylinders and pistons An axial piston machine having a housing (1) the interior housing chamber of which includes a leakage chamber (37) and accommodates a stroke disc (3) and a rotatably mounted cylinder drum (6) having cylinders (26, 28) and pistons (29) reciprocally movable... | 10/26/1999 |
| 5950521 | Swash-plate compressor capable of insuring sufficient lubrication between a piston and a shoe slidably interposed between the piston and a swash plate In a swash plate compressor (1) comprising a shoe (8) disposed between, and being in sliding contact with, a piston (7) and a swash plate (6), at least one of a shoe receiving surface (73e) of the piston (7) and a piston-side sliding surface (8b) of the s... | 09/14/1999 |
| 5941157 | Variable capacity swash plate compressor A variable capacity swash plate compressor has a retainer mounted on its swash plate in a relatively rotatable manner with respect to the swash plate for supporting a plurality of shoes, and an annular retainer support plate for supporting the retainer in... | 08/24/1999 |
| 5823294 | Lubrication mechanism in compressor A compressor compresses gas containing misted oil. The compressor has a drive plate located in a crank chamber and mounted on a drive shaft and a piston operably coupled to the drive plate and located in a cylinder bore. The drive plate converts rotation ... | 10/20/1998 |
| 5816134 | Compressor piston and piston type compressor A compressor has a piston (11) that reciprocates between a top dead center and a bottom dead center in a cylinder bore (2a) by means of a driving body (9) mounted on a rotary shaft (6) in a crank chamber (5) during the rotation of the rotary shaft (6). Th... | 10/06/1998 |
| 5807076 | Lubrication method and lubrication controlling apparatus for clutchless compressor An electromagnetic valve (32) opens and closes a pressurizing passage (31). When the pressurizing passage (31) is opened, a swash plate (15) mounted on a rotary shaft (9) inclines toward the minimum inclination. As the swash plate (15) inclines toward the... | 09/15/1998 |
| 5784950 | Single headed swash plate type compressor having a piston with an oil communication hole on a side of the piston remote from the cylinder bore and crank chamber A single headed swash plate type compressor including, a housing with a crank chamber and cylinder bore, pistons arranged in cylinder bores, and a swash plate driven by a drive shaft. Each of the pistons has at one end thereof a bearing having axially spa... | 07/28/1998 |
| 5785150 | Swash plate type axial piston pump including lubrication mechanism, and valve plate In a swash plate type axial piston pump, a swash plate 23 is fixed and supported in a cabinet while being inclined with respect to the center axial line of a rotary shaft 3. A cylinder block 15 having a plurality of cylinders 13 is attached to the rotary ... | 07/28/1998 |
| 5782316 | Reciprocating piston variable displacement type compressor improved to distribute lubricating oil sufficiently A reciprocating piston type compressor for compressing refrigerant gas for an automobile air conditioning system is provided with a cylinder block assembly which includes a plurality of cylinder bores, a swash plate chamber and an oiler channel which exte... | 07/21/1998 |
| 5779004 | Lubricating mechanism for piston type compressor A lubricating mechanism for a piston type compressor in a refrigeration system. A cam plate is mounted on a drive shaft for integral rotation therewith in a crank chamber, which is defined in a casing. Pistons are coupled to the cam plate and reciprocate ... | 07/14/1998 |
| 5733107 | Lubricant oil separating mechanism for a compressor A compressor with a compressing device compresses gas containing oil mist. The compressing device includes a compression chamber. A receiving chamber receives the compressed gas discharged from the compression chamber. The receiving chamber has a duct for... | 03/31/1998 |
| 5730249 | Fluid displacement apparatus with a lubricating mechanism driven by a wobble plate balancing weight A slant plate type compressor includes a compressor housing having a cylinder block provided with a plurality of cylinders and a basin portion formed at a bottom thereof for storing lubricating oil. A slant plate is disposed on the drive shaft and undergo... | 03/24/1998 |
| 5685215 | Hydraulic piston engine driven by a lubricant-free, water-based fluid A hydraulic piston engine driven by a lubricant-free, water-based pressure fluid, and comprising an enclosing housing and a piston-connected drive shaft supported by radial journal bearings in bearing bushings. One of the sliding surfaces of the radial jo... | 11/11/1997 |
| 5641038 | Bearing for use in compressor for air conditioner A roller bearing for use in a compressor for an air conditioner. Either the rolling elements or the bearing rings of the bearing is formed on their surface with a multitude of independent minute recesses in random directions. The surface is smooth at othe... | 06/24/1997 |
| 5636974 | Reciprocating piston type compressor with an oil separator for removing lubricating oil from discharged high pressure refrigerant gas A reciprocating piston compressor adapted to receive a low pressure gas from an external circuit, and to supply a high pressure gas to the external circuit includes a cylinder block with front and rear ends. The cylinder block includes a central bore exte... | 06/10/1997 |
| 5562182 | Oil diverting unit for a refrigerant compressor An oil diverting unit, incorporated in a compressor housing of a refrigerant compressor for a climate control system of an automobile, cooperating with a shaft seal unit mounted on a drive shaft of the compressor, so as to divert a flow of the lubricating... | 10/08/1996 |
