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Rotary expansible chamber devices January recently filed with US Patent Office 01/09

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.
01/29/2009 > patent applications in patent subcategories.

20090028735 - Vane-cell machine and method for waste heat utilization, using vane-cell machines: The invention relates to a vane-type machine. The housing has a largely cylindrical space for accommodating the vane cells and an inlet opening and an outlet opening. A shaft is eccentrically arranged in the housing. A first and a second guide plate arranged largely parallel to one another are provided... Agent: Lerner Greenberg Stemer LLP

20090028736 - Orbit control device for a scroll compressor: An orbit control device for a scroll compressor is disclosed including at least one pin disposed in an orbit scroll, a support plate having at least one support hole formed therein, and a guide plate having at least one guide hole formed therein. Contact of an outer surface of the... Agent: Fraser Clemens Martin & Miller Llc

20090028737 - Reservoir for a replacement fluid for a device and a device, together with an oil separator fitted with such a reservoir: Reservoir for a replacement fluid for a device, where the reservoir (3) is pre-filled with the desired quantity of the relevant replacement fluid (15) And where this reservoir is equipped with detachable coupling devices (29) which make it possible to mount and dismantle the reservoir (3) on the device (1)... Agent: Bacon & Thomas, Pllc

20090028738 - Rotor: A rotor for rotary engines and compressors is disclosed. The rotor of the present invention includes a first body unit (100a), which has a rotor housing (102) and a core (104) provided with a plurality of roller plate seats. The rotor further includes a second body unit (100b) having a... Agent: Cooper & Dunham, LLP

20090028739 - Ring turbo-piston engine and ring turbo-piston supercharger: The inventive turbo-piston machine is embodied in the form of a turbo-piston expander and/or a turbo-piston supercharger and/or internal combustion engine comprising two mating working members i.e. a rotor and a valve. The rotor is provided with a piston embodied thereon and the valve is provided with a groove. The... Agent: Brooks Kushman P.c.

01/22/2009 > patent applications in patent subcategories.

20090022612 - Variable capacity vane pump with dual control chambers: A variable capacity vane pump is provided, the pump having a pump control ring which is moveable to alter the capacity of the pump and the pump can be operated at either of at least two selected equilibrium pressures. The pump ring is moved by at least first and second... Agent: Magna International, Inc.

20090022613 - Asynchronous non-constant-pitch spiral scroll-type fluid displacement machine: v

01/15/2009 > patent applications in patent subcategories.

20090016918 - Pneumatic vane motor with by- pass means: A pneumatic vane motor with a stator cylinder having an air inlet opening and an air outlet opening, a rotor eccentrically journalled in the cylinder and carrying a number of sliding vanes which divide the cylinder into moving cells, wherein the cylinder comprises a by-pass passage located between the air... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090016919 - Gear pump: A gear pump (1) for use with a hand-operated tool (200) having a rotatable shaft (201), said gear pump (1) comprising: a housing (5) having a chamber (6), an inlet (65) for fluid into the chamber (6) and an outlet (66) for fluid from the chamber (6); and a gear... Agent: Nixon & Vanderhye, PC

20090016921 - Oil free screw compressor: Provided is a highly reliable oil free screw compressor including a first sensor for detecting a temperature of lubrication oil, second sensors for detecting temperatures of intake air, and a cooling fan controller having a storage portion storing therein a set temperature of lubrication oil and a set temperature of... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090016920 - Screw pump and screw gear: A screw pump is provided with a pair of screw rotors serving as fluid transfer bodies. With respect to a rotation angle (x) around an axis of each of the screw rotors, a change of a lead angle (θ) from a winding start angle (0), which is the rotation angle... Agent: Morgan & Finnegan, L.L.P.

20090016922 - Screw compressor: Screw compressor having male- and female rotors for extremely high discharge pressures, the radial bearings and the supporting flanges enclosing the radial bearings tight-fitting adjoin the housing bores with their centres arranged on two parallel axes of the housing.... Agent: Horst M. Kasper

01/08/2009 > patent applications in patent subcategories.

20090010790 - Sliding vane of rotors: The present invention provides a sliding vane, which is provided through a rotor in a cylinder and reciprocates in a diametrical direction and rotates together with the rotor. The sliding vane of the present invention includes a vane body (10), which has plate seating slots (23a) and (23b) formed in... Agent: Cooper & Dunham, LLP

20090010791 - Internal gear pump: An internal gear pump which has a crescent disposed between an outer rotor and an inner rotor having a trochoidal tooth profile, and which reduces vibrations caused by pulsations generated when the fluid is discharged. The internal gear pump has an outer rotor having internal teeth formed therein, an inner... Agent: Mcginn Intellectual Property Law Group, PLLC

01/01/2009 > patent applications in patent subcategories.

20090004036 - Helical screw compressor: A screw compressor with two rotors held in a rotor housing has sealing arrangements 11, 11′ to seal the pressurized side shaft pin of the rotors, wherein each sealing arrangement has a number of successive radial seal rings 11a, 11b and wherein it contains an annular relief chamber 51 at... Agent: Michael Best & Friedrich LLP

20090004037 - Magnetic bearing and coupling device: A follower shaft is rotatably supported coaxially with a driving shaft. An inner rotary permanent magnet having poles in a radial direction is fixed around an outer circumference of the end of the follower shaft. On the inner circumferential surface of a cylindrical coupling, an outer rotary permanent magnet is... Agent: Fennemore Craig, P.C.

20090004038 - Liquid-cooled rotor assembly for a supercharger: A rotor assembly for a supercharger assembly is provided. The rotor assembly includes at least one lobe defining at least one cavity. The at least one cavity is configured to contain a fluid operable to cool the at least one lobe. A supercharger incorporating the rotor assembly is also disclosed.... Agent: General Motors Corporation Legal Staff

20090004039 - Single stage root type-vacuum pump and vacuum fluid transport system employing the single stage root type-vacuum pump: A pair of outside air introduction holes (22, 22) is formed in the vicinity of a phantom line (m) in an inner wall surface (6c) within a range between intersecting points (q, q), where the intermediate position (p) is located between the center of a driving side Root type-s rotor... Agent: Wenderoth, Lind & Ponack, L.L.P.

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