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Rotary expansible chamber devices July category listing 07/10

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
07/29/2010 > patent applications in patent subcategories.

20100189582 - Dual stage pump having intermittent mid-shift load supports: A hydraulic pump is disclosed. The hydraulic pump may have a first fluid section (12), a second fluid section (14), and an input shaft (16) extending through the first fluid section and the second fluid section. The input shaft may have a first end (44), a second end (46), and... Agent: Caterpillar/finnegan, Henderson, L.L.P.

20100189583 - Dry vacuum pump including a lubricating fluid sealing device and a centrifuge element equipping such a device: The invention pertains to a dry vacuum pump comprising at least one rotating shaft (11) mounted on at least one lubricated bearing (5) and at least one sealing device (9) for sealing off lubricating fluids capable of entering the shaft passage from said bearing (5), said sealing device (9) being... Agent: Carmen Patti Law Group, LLC

20100189584 - 2 stage rotary compressor: The present invention provides a 2 stage rotary compressor including a hermetic container (101), an electric motor (110) provided in the hermetic container (101) and composed of an stator (111), a rotor (112) and a rotation axis (113), a low pressure compression assembly (120) including a low pressure cylinder (121),... Agent: Mckenna Long & Aldridge LLP

20100189585 - Scroll compressor: A scroll compressor includes first and second scroll members housed in a casing. The first scroll member has a fluid inlet and a first through hole spaced from the fluid inlet. A fluid introducing pipe is configured to connect to the first through hole. A piston, having an annular groove... Agent: GlobalIPCounselors, LLP

20100189586 - Pump housing: A pump housing, in particular a vane cell pump housing, having a suction connection point, from which a suction channel emerges which opens with a suction-channel opening into a receiving chamber in the pump housing, and having a pressure connection point, from which a pressure channel emerges which opens at... Agent: Cohen, Pontani, Lieberman & Pavane LLP

07/22/2010 > patent applications in patent subcategories.

20100183466 - Displacement machine according to the spiral principle: A displacement machine of spiral-type construction for a compressible medium includes a displacement body having a carrier disc and helical blades extending out from both sides of the carrier disc. The carrier disc has a hub which is supported by a hub bearing on an eccentric disc which is part... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20100183465 - Scroll compressor: The scroll compressor of the invention has a compression unit including a movable scroll made up by forming a vortical wrap in an end wall and a similar fixed scroll, and being capable of carrying out compression along with an orbiting movement of the movable scroll with the wraps of... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20100183467 - Portable, rotary vane vacuum pump with automatic vacuum breaking arrangement: A portable, rotary vane vacuum pump with an automatic vacuum breaking arrangement that vents the pump to atmosphere whenever the drive motor ceases to rotate the pump. The arrangement prevents lubricating oil in any substantial amount from being undesirably drawn or sucked into the evacuated pump when the drive motor... Agent: Dorr, Carson & Birney, P.C.

20100183468 - Single screw compressor structure and method of assembling single screw compressor including the same: A single screw compressor structure includes a screw rotor and a casing, which houses the screw rotor. A tapered outer circumferential surface of the screw rotor has a plurality of helical grooves, with an outer diameter that increases from an inlet side toward a discharge side. The casing includes an... Agent: GlobalIPCounselors, LLP

07/15/2010 > patent applications in patent subcategories.

20100178186 - Fluid motor having improved braking effect: The invention relates to a motor having an inner motor compartment (18). A rotatable rotor (20) can be driven by applying a pressure medium to it, wherein the pressure medium expands in a working region (40) of the motor compartment (18). A brake element (22) for braking the rotor (20)... Agent: Banner & Witcoff, Ltd.

20100178187 - Vacuum pump: A dry vacuum pump comprises a stator component and at least one rotor component. To improve the tolerance of the pump to corrosive gases passing through the pump, the stator component and/or said at least one rotor component are formed from silicon-molybdenum (SiMo) ductile iron.... Agent: Edwards Vacuum, Inc.

20100178188 - Gerotor motor and brake assembly: A hydraulic device includes a gerotor assembly, a wobble stick, an output shaft, a housing assembly, a first port in the housing assembly, a second port in the housing assembly, first brake disks, second brake disks, a piston, and a biasing member. The gerotor assembly includes a rotor and a... Agent: Rankin, Hill & Clark LLP

20100178189 - Rotary expanding or compressing mechanism provided in fluid channel with blades for traversing shaft: This invention will involve in the technologies of fluid expanding or compressing on fluid channel, which belongs to the form of volume, and it has particularly decisive meaning on the reliability of the outstanding performance of bias cylinder rotary expansion or compressed mechanism with blades for traversing shaft. This mechanism... Agent: Ladas & Parry

20100178190 - Accurate powder metal component, assembly and method: The invention provides an accurate powder metal component having a body with opposed surfaces at least one of which has at least one projection of smaller cross-sectional area than the main portion of the body of the component. The distance from the free end of the projection to the opposite... Agent: Quarles & Brady LLP

20100178191 - Screw pump and screw rotor: A cross section of a tooth profile of a first screw rotor (17) perpendicular to the rotor axis includes a tooth top arc (A1B1), a tooth bottom arc (C1D1), a first curve (A1C1), and a second curve (B1D1). The first curve (A1C1) is a first trochoidal curve that connects a... Agent: Locke Lord Bissell & Liddell LLP Attn:IPDocketing

07/08/2010 > patent applications in patent subcategories.

20100172780 - Scroll compressor: An object of the present invention is to provide a scroll compressor capable of three-dimensional compression, which can prevent performance deterioration and performance variation due to gas leakage occurring on an outer peripheral side of a step portion of a spiral wrap and can achieve performance stabilization and performance improvement.... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20100172781 - Scroll compressor: To provide a scroll compressor capable of reducing a noise occurring in a pin-and-ring type self rotation preventing mechanism and improving compression performance. In a scroll compressor comprising: a fixed scroll member and a revolving scroll member; a driven crank mechanism for driving the revolving scroll member to revolutionary turn;... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20100172782 - Vacuum pump: A pair of Northey rotors for a vacuum pump, in which each rotor comprises two opposing, substantially parallel faces, and a peripheral surface located between the opposing faces. In order to reduce damage caused by pumping a gas stream containing liquid or solid particulates, a plurality of grooves is located... Agent: Edwards Vacuum, Inc.

07/01/2010 > patent applications in patent subcategories.

20100166588 - Vane pump with rotating cam ring and increased under vane pressure: An example vane pump comprises a shaft driving a rotor. The rotor has a plurality of vane grooves, with a vane received in each of the plurality of vane grooves, and an under vane chamber for communicating a pressurized fluid into the grooves to bias the vanes radially outwardly of... Agent: Carlson, Gaskey & Olds, P.C.

20100166589 - Scroll type fluid machine: The invention reduces a centrifugal force of a orbiting scroll which acts on an auxiliary crank mechanism. A crank pin which is eccentric from a main shaft portion is formed in a drive shaft, and a main balance weight is provided in a base end side of the crank pin.... Agent: Crowell & Moring LLP Intellectual Property Group

20100166590 - Rotary fluid pressure device and improved parking lock assembly therefor: A rotary fluid pressure device (11) includes an end cap (23) which is disposed rearwardly of, and adjacent, the fluid displacement mechanism (21). The end cap defines a piston cavity (103) in which is disposed a lock piston (105), which is moveable between a first position and a second position,... Agent: Merchant & Gould PC

20100166591 - Positive displacement rotary components having main and gate rotors with axial flow inlets and outlets: An axial flow positive displacement gas turbine engine component such as a compressor or a turbine or an expander includes a rotor assembly extending from a fully axial flow inlet to a downstream axially spaced apart axial flow outlet. The rotor assembly includes a main rotor and one or more... Agent: Steven J. Rosen

Previous industry: Pumps
Next industry: Powder metallurgy processes


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