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Rotary expansible chamber devices

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.
08/07/2014 > 10 patent applications in 8 patent subcategories.

20140219844 - Expansion device for use in a working medium circuit and method for operating an expansion device: In an expansion device for use in a working medium circuit, for performing a process sequence corresponding to that of a Clausius Rankine cycle or an Organic Rankine cycle, a working unit comprising two interleaved scroll elements is provided of which one is stationary whereas the other is supported for... Agent: Daimler Ag

20140219845 - Rotary systems lubricated by fluid being processed: Rotary systems are described, which can include at least one of compressors and vacuum pumps. Each rotary system includes a corresponding piston that rotates in an orbital motion around a respective eccentric of a shaft in order to either compress fluid or function as a vacuum pump. Multiple rotary systems... Agent: Caire Inc.

20140219846 - Capacity modulated scroll compressor: A capacity modulation assembly is provided and may include a control valve and a first line extending between the control valve and a suction pressure region disposed within a compressor shell, whereby the suction pressure region is in communication with a suction inlet gas fitting extending through a shell of... Agent: Emerson Climate Technologies, Inc.

20140219848 - Hydraulic motor-pump with fixed or variable displacement: The fixed or variable displacement hydraulic motor-pump (1) includes a motor-pump central rotor (3) in which a hydraulic cylinder (14) is arranged, the rotor (3) being in sealed contact with an input-output spool valve (43) connecting the cylinder (14) with a motor-pump frame (2) while a hydraulic piston (13) moves... Agent:

20140219847 - Variable displacement oil pump: A variable displacement oil pump includes: a switching mechanism arranged to switch a state in which the hydraulic fluid is introduced to the second control hydraulic chamber through a connection passage, and a state in which the hydraulic fluid is discharged from the second control hydraulic chamber through the connection... Agent: Hitachi Automotive Systems, Ltd.

20140219849 - Branch communication valve for a twin scroll turbocharger: Methods and systems are provided for a branch communication valve in a twin turbocharger system. A branch communication valve may be positioned adjacent to a dividing wall separating a first scroll and a second scroll of the twin turbocharger. In an open position, the branch communication valve increases fluid communication... Agent: Ford Global Technologies, LLC

20140219850 - Compressor bearing assembly: A compressor is provided that may include a drive shaft, a compression mechanism, a bearing and an unloader. The drive shaft may include a main body and a crank pin extending from the main body. The compression mechanism may include first and second members. The crank pin may drivingly engage... Agent: Emerson Climate Technologies, Inc.

20140219851 - Rotary compressor: A rotary compressor (100A) includes a closed casing (1), a compression mechanism (48), a lower end-face plate (34), and a communication hole (50). An oil reservoir (12) is formed at the bottom of the closed casing (1). The lower end-face plate (34) divides the oil reservoir (12) into a plurality... Agent: Panasonic Corporation

20140219852 - Hydraulic device: A hydraulic device (1) comprising a housing (2) and a gerotor (3) contained within the housing (2), the gerotor (3) having an inner rotor (4) eccentrically disposed within an outer ring (5), the outer ring having a central axis (19), the outer ring (5) being fixed to the housing, the... Agent: Volvo Car Corporation

20140219853 - Vane for a vane cell device, as well as a vane cell device: A vane for a vane cell device comprising a stator and a rotor rotatably arranged in the stator with a plurality of guide grooves in each of which a vane can be movably mounted along a direction of movement. The vane has a high-pressure side, and a low-pressure side facing... Agent: Saeta Gmbh & Co. Kg

07/31/2014 > 10 patent applications in 8 patent subcategories.
07/24/2014 > 3 patent applications in 3 patent subcategories.

20140205482 - Multi-stage vacuum pump of the dry pump type: A multi-stage vacuum pump of the dry pump type is disclosed. The multi-stage vacuum pump includes a plurality of pumping stages each respectively having an inlet and an outlet, the pumping stages being mounted in series between a suction port and a discharge port of the vacuum pump, characterized in... Agent: Adixen Vacuum Products

20140205483 - Roots pump: A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.... Agent:

20140205484 - Radially compliant scroll compressor: A compressor may include a compression mechanism, a driveshaft, and a lever. The compression mechanism may include orbiting and non-orbiting scroll members meshingly engaging each other. The driveshaft may include an eccentric crank pin engaging the orbiting scroll member such that rotation of the driveshaft about a first axis causes... Agent: Emerson Climate Technologies, Inc.

07/17/2014 > 6 patent applications in 6 patent subcategories.

20140199196 - Ball seat apparatus and method: A ball seat assembly includes a tubular having a bore therethrough; an entry port in fluid communication with the bore; a plurality of exit ports in fluid communication with the entry port; a ball seat disposed in the each of the plurality of exit ports, wherein the ball seat is... Agent: Weatherford/lamb, Inc.

20140199197 - Variable displacement pump with multiple pressure chambers: A variable displacement vane pump has a plurality of seals between the inner surface defining the housing's internal chamber and an outer surface of the control ring. The seals define a plurality of pressure regulating chambers comprising a first chamber and a second chamber each for receiving pressurized fluid. The... Agent: Stackpole Powertrain International Ulc

20140199198 - Internal gear pump: An internal gear pump includes an inner rotor having n teeth and an outer rotor having (n+1) teeth. A tooth profile of the inner rotor is an envelope of a group of locus circles (13) each having a diameter C and having a center on a trochoidal curve (T), the... Agent: Sumitomo Electric Sintered Alloy, Ltd.

20140199199 - Gas pump with pressure relief for reducing the starting torque: A gas pump including a delivery chamber with an inlet and an outlet for a gas; a first housing part with a first sealing surface which at least partially surrounds the delivery chamber; a second housing part with a second sealing surface which at least partially surrounds the delivery chamber,... Agent: Schw&#xe4 Bische H&#xfc Ttenwerke Automotive Gmbh

20140199200 - Expander circuit: An expander circuit for a thermal expander, having a first pump arranged between a condenser and an evaporator, is proposed, the inlet of the expander being connected to the evaporator and the outlet to the condenser, and a separate lubricating circuit connecting the expander circuit to at least one bearing.... Agent: Magna Powertrain Ag & Co Kg

20140199201 - Compressor with rotating cam and sliding end vanes: An apparatus for compressing or pumping fluid includes a housing having an interior chamber. The housing includes an end wall having a fluid inlet and a fluid outlet. A rotating cam is rotatably mounted within the interior chamber and includes a cam body having an end with a sloped annular... Agent: Albert's Generator Services Inc.

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