Class 92/261 - MISCELLANEOUS (E.G., CRANKCASE)

Subclass of Class 92 - Expansible chamber devices
Definition: Subject matter not provided for in other subclasses.
No. of patents: 38
Last issue date: 12/20/2005

Number	Title	Issue Date
6976559	Piston compressor, particularly hermetically enclosed refrigerant compressor The invention relates to a piston compressor, particularly a hermetically enclosed refrigerant compressor, with a crank drive, having a crank shaft with an eccentric crank pin and an oil channel arrangement, and a connecting rod with a first piston-side connecting r...	12/20/2005
6386833	Air compressor assembly with dual cooling fans An apparatus includes a motor with an output shaft. A solitary air compressor is linked to the output shaft so as to be driven by the output shaft. The compressor contains a piston in a cylinder. A first fan is mounted on the output shaft to direct coolin...	05/14/2002
5868110	Crankcase for a piston machine In a crankcase for a piston machine having a bearing support structure for a crankshaft main bearing with a bearing base part integrally formed with the bearing support structure and a bearing cover mounted onto the bearing base part by bearing bolts exte...	02/09/1999
5799626	Methods for using styrene oil (as heat transfer fluid, hydraulic fluid, lubricant) Methods of using styrene oil, its fractions, and combinations thereof as working fluids, lubricants, fuels and solvents....	09/01/1998
5706715	Composite diaphragm for diaphragm pumps having two different shore-hardness materials A pump diaphragm that is composed of two different shore-hardness materials of the same base polymer. The diaphragm includes a strong layer that will withstand hydraulic pressures and one or more soft layers that can be shaped into desirable sealing confi...	01/13/1998
5671656	Paint pump fluid section An improved fluid section for piston type paint pumps having the piston made from unplated stainless steel and wherein the seal is a multiple lip type formed of ultra-high molecular weight polyethylene and the seal further includes one or more U-shaped in...	09/30/1997
5647267	Slider of hermetic compressor A slider of a closed-type compressor in which friction and abrasion of an inside circumferential surface of a slider shell and an outside circumferential surface of the slider can be reduced by forming a circular arc at both portions where the outside cir...	07/15/1997
5630354	Extended life brake cylinder holder A push rod holder for use with a brake cylinder of a railroad vehicle is disclosed. The push rod holder includes an annular outer metal member and an annular inner elastomeric member. The annular inner elastomeric member is molded to an interior surface o...	05/20/1997
5615600	Roller bearing piston This invention relates to a piston with its skirt being cut to locate four sets of bearing pads and circulating roller bearings. Each pad has been milled to have a doughnut shaped groove with half of a roller cross-section to hold the roller bearing in ci...	04/01/1997
5615597	Composite diaphragm for diaphragm pumps having two different shore-hardness materials A pump diaphragm that is composed of two different shore-hardness materials of the same base polymer. The diaphragm includes a strong layer that will withstand hydraulic pressures and one or more soft layers that can be shaped into desirable sealing confi...	04/01/1997
5456160	Method for reducing seal stiction in a hydraulic cylinder A method of reducing seal stiction in a hydraulic cylinder is provided comprising the steps of providing a hydraulic cylinder, having a housing, a piston, and a seal, providing apparatus for rotating the seal about the piston, and rotating the seal about ...	10/10/1995
5437220	Ball bearing piston This invention relates to a piston with its skirt being cut to locate four sets of bearing pads and circulating bearing balls. Each pad has been milled to have a doughnut shaped groove with half of a circle cross-section to hold the ball bearing in circul...	08/01/1995
5392692	Antiblow-by piston and seal construction for high temperature applications A piston and ring assembly operative within a cylindrical bore wall to retain fluid to one side of the assembly, comprising a piston having at least one annular stepped groove in the side wall of the piston, the groove being stepped into uppermost and low...	02/28/1995
5363744	Accumulator piston having multiple elastomeric seals An accumulator piston is formed as a two-piece plastic molding for simplifying its construction and for cost reduction and weight reduction purposes. The piston has a radially stepped construction in which each step includes a radial flange carrying an an...	11/15/1994
5095809	Piston vibrator having an asymmetric cylindrical bore The invention relates to a piston vibrator comprising a case with at least one cylindrical bore (5), at least one air connection (7) taken laterally to the bore (5), and a piston (2) longitudinally displaceable in the bore (5). As a means of making such a...	03/17/1992
5094150	Pump piston for axial piston pumps In the pump piston for axial piston pumps which comprises a ceramic piston and a drive member of metallic material the ceramic piston has an end face of which from 20 to 80% is in the form of a joint surface for a soldered connection to the drive member....	03/10/1992
5085131	Hydraulic cylinder for automotive steering systems and the like An automotive steering system hydraulic cylinder and method for making the cylinder are disclosed. The cylinder is attached to a rack and pinion gear assembly housing so that a piston from the assembly creates a variable displacement chamber within the cy...	02/04/1992
5076149	Wrist pin, piston assembly and method for making same A piston assembly is disclosed having a wrist pin for pivotably attaching a connecting rod to a piston for use in an internal combustion engine. The wrist pin is formed from an elongated circular cylindrical body having a pair of deformable sections forme...	12/31/1991
5058488	Means for preventing the build-up of carbon deposits on pistons A substantially circumferential annular member is installed in the region defined by the rear face of a piston compression ring and the upper and lower walls and the bottom of the compression ring groove. The annular member moves within said room by the a...	10/22/1991
5029517	Vaneless rotary airlock valve The vaneless rotary airlock valve of this invention is designed to overcome the deficiencies of excessive leakage, excessive wear, and product degradation associated with conventional vaned rotary airlocks. It is comprised of a vaneless rotor (a cylindric...	07/09/1991
5007332	Piston for piston machines In a piston for piston machines comprising a hollow body, open at least at its free end, having an axial cavity in which there is a filler piece at least partly filling the latter and consisting of a material of lower specific gravity than the material of...	04/16/1991
5007331	Dry run-high pressure stage of a multistage piston compressor The invention relates to the dry run-high pressure stage of a multistage piston compressor with a piston designed as a tappet (2) guided in the high pressure cylinder (1) and sealed against the compression space of the cylinder (1) by means of self-lubric...	04/16/1991
4981071	Machine element with coating On a machine element of a metallic material, for example, a piston or a piston rod (7, 7') for a shock absorber for a motor vehicle, with at least one hard-material coating deposited on the machine element, the hard-material coating essentially consists o...	01/01/1991
4976193	Bellows with a minimized compression size The invention relates to a bellows with supporting elements, the supporting elements being provided with a notch in the zone where the folded material of the accordion overlaps. Such a bellows is characterized by an especially small compression size....	12/11/1990
4962691	Mounting structure of a multiple piston ring This invention relates to a mounting structure of a multiple piston ring for various internal combustion engines. A plurality of piston rings are all wrapped in a cylindrical groove formed upon an outer surface of a piston so that a gap of one piston ring...	10/16/1990
4960040	Arm structure for articulated mechanism An arm structure for use in an articulated mechanism such as an industrial robot comprises a plurality of links operatively interconnected by articulations having respective actuators and actuatable by the actuators under a fluid pressure. Each of the lin...	10/02/1990
4901629	Sealing arrangement FIG. 1 shows a sealing arrangement which includes a mushroom-shaped piston is driven to reciprocate in a cylinder by an annular driving part extending around its stem. The driving part forms the "rotor" of a linear electric motor, the "stator" of which is...	02/20/1990
4848213	Reciprocating piston compressor with offset cylinder A reciprocating piston compressor of the type having the piston fixed to the connecting rod. The centerline of the cylinder is offset from the centerline of the crankshaft in a direction which reduces the maximum angle between the piston and the cylinder ...	07/18/1989
4846051	Uncooled oilless internal combustion engine having uniform gas squeeze film lubrication An apparatus for providing a gas phase film lubrication between a reciprocal piston and a cylinder of an uncooled oilless internal combustion engine; the piston is effective to drive a rotary crankshaft in response to an expanding gas charge. The apparatu...	07/11/1989
4819547	Axially contractable actuator An actuator has a first connection point and a second connection point at opposite ends and is contractable along an axis extending between the connection points. The actuator has at least one hollow enclosure with an opening for admitting a pressurized f...	04/11/1989
4787295	Piston for internal combustion engines Piston for internal combustion engines, with an oil scraper ring disposed in an annular groove at the circumference of its head portion. The outer edge of the annular groove adjacent to the piston skirt which adjoins the head portion is bevelled to form a...	11/29/1988
4782741	Vaneless rotary airlock valve The vaneless rotary airlock valve of this invention is designed to overcome the deficiencies of excessive leakage, excessive wear, and product degradation associated with conventional vaned rotary airlocks. It is comprised of a vaneless rotor (a cyclindri...	11/08/1988
4630345	Method for manufacturing a cylinder unit for a cylinder piston combustion engine A cylinder unit of a cylinder-piston-combustion engine comprises a cylinder housing and a lining unit inserted into the cylinder housing. The lining unit consists of a cylindrical liner sleeve and a terminal wall and encloses a combustion space. The termi...	12/23/1986
4567815	Connecting rod and bearing assembly therefor A refrigeration gas compressor comprises a piston reciprocably movable to effect gas compression, a motor-driven rotatable crank shaft, and a connecting rod between a crank shaft, crank pin and a piston wrist pin. A crank pin receiving hole and a wrist pi...	02/04/1986
4553473	Valve actuating mechanism for engines A DOHC engine of the V-type has two cylinder heads each detachably secured to a cylinder block. A crank shaft on the block drives two intermediate shafts, one on each cylinder head, by means of an endless flexible element. An additional flexible endless e...	11/19/1985
4423667	Bearing A sleeve-type bearing includes an outer sleeve, an inner sleeve, and an oscillation-damping material fixedly disposed between the outer and inner sleeves. It is preferable that such a bearing is used to support a crankshaft of an automotive engine....	01/03/1984
3971297	Two cycle engine with peripheral bypass for piston head and method of manufacture The invention provides a bypass around virtually the entire periphery of a piston in a two cycle engine without substantially increasing costs or obsoleting production tooling. This is done by reshaping a cavity formed inside an engine casting to enlarge ...	07/27/1976
3940111	Apparatus for applying a determined force to an element connected to an installation subjected to alternating movements This apparatus comprises a main jack for supporting elements from the installation and a regulating device which includes at least one pivoting jack and makes use of a source of pressurized fluid in communication with a chamber of variable volume in which...	02/24/1976

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Class 92/261 - MISCELLANEOUS (E.G., CRANKCASE)