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Rotary expansible chamber devices November recently filed with US Patent Office 11/10

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.
  
11/25/2010 > patent applications in patent subcategories. recently filed with US Patent Office

20100296956 - Variable displacement pumps and vane pump control systems: A vane pump assembly is provided having a rotor, a plurality of vanes, first and second pistons, at least one fluid passageway, a spring, and an activator. The plurality of vanes adjustably extend from the rotor. The moveable stator ring encircles the rotor and is configured to affect fluid flow... Agent: Barnes & Thornburg LLP

20100296957 - Scroll fluid machine: A fixed scroll is provided with a pin shaft portion which is formed in a cylindrical shape. Formed in a movable scroll is a slide groove which extends in the radial direction of the movable scroll. The pin shaft portion of the fixed scroll is engaged into the slide groove... Agent: Birch Stewart Kolasch & Birch

20100296958 - Screw pump: A screw pump (10) comprises a stator (12) having a fluid inlet (18) and a fluid outlet (20), the stator housing first and second externally threaded, tapered rotors (26, 28) mounted on respective shafts and adapted for counter-rotation within the stator (12) to compress fluid passing from the fluid inlet... Agent: Edwards Vacuum, Inc.

20100296959 - Rotary-type fluid machine: A rotary-type fluid machine includes a compression mechanism having piston mechanisms arranged one on top of the other and a drive mechanism having a drive shaft that is configured and arranged to drive the piston mechanisms. Each of the two piston mechanisms includes a cylinder member with a cylinder chamber,... Agent: GlobalIPCounselors, LLP

  
11/18/2010 > patent applications in patent subcategories. recently filed with US Patent Office

20100290940 - Radial axis, spherical based rotary machines: A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have a beveled gear... Agent: Wilmerhale/boston

20100290941 - Oil pump for a vehicle: A plurality of convex portions that protrude radially outward from a plurality of positions separated in the circumferential direction are provided on the outer peripheral surface of a driven gear. Each convex portion has, in the circumferential direction of the driven gear, a rising surface that rises from a minimum... Agent: Sughrue Mion, PLLC

  
11/11/2010 > patent applications in patent subcategories. recently filed with US Patent Office

20100284842 - Method of producing a stator segment for a segmented stator of an eccentric screw pump: A method for producing a stator segment for a segmented stator of an eccentric screw pump or an eccentric screw motor, as well as a stator segment and a stator. A stator segment in an initial state is processed or machined with a linear cutter that removes material to provide... Agent: Robert W. Becker & Associates

20100284843 - Stator for an eccentric screw pump or an eccentric screw motor and method of producing a stator: A stator and method of producing a stator for an eccentric screw pump or an eccentric screw motor, including an outer stator tube, at least one stator segment disposed within the outer stator tube, and at least one tube end portion that completes one end of the outer stator tube.... Agent: Robert W. Becker & Associates

20100284844 - Method for manufacturing compressor slider, and compressor: A method for manufacturing a compressor slider includes a slider preform manufacturing step, a resin coating step, and a machining step. In the slider preform manufacturing step, an iron slider preform in which at least one property selected from the tensile strength and the tensile modulus of elasticity is greater... Agent: GlobalIPCounselors, LLP

20100284845 - Scroll fluid machine with a coating layer: A scroll fluid machine that is capable of preventing a power loss and enhancing the degree of hermeticity of compression chambers. A plurality of outer peripheral projections are formed on an outer peripheral surface of a wrap portion of each scroll. An outer peripheral coating layer is formed on an... Agent: Crowell & Moring LLP Intellectual Property Group

20100284847 - 2 stage rotary compressor: The present invention provides a 2 stage rotary compressor including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container (101) and including a low pressure compression assembly (120), a middle plate (140) and a high pressure compression assembly (130), a low pressure refrigerant inflow portion... Agent: Ked & Associates, LLP

20100284846 - Scroll type fluid machinery: Scroll type fluid machinery, in which two stationary scrolls (2A, 2B) are fixed onto a housing (1), and form volume changing mechanisms (50A, 50B) with matching orbiting scrolls (3A, 3B). Three orbiting units (40) are located between the two volume changing mechanisms. Each orbiting unit comprises a rotating member (10)... Agent: Squire, Sanders & Dempsey L.L.P.

20100284848 - Screw compressor: A screw compressor includes a screw rotor having a plurality of helical grooves, a casing containing the screw rotor and a gate rotor. The casing includes a discharge port on an inner peripheral surface of the casing. The gate rotor has gates meshing with the helical grooves of the screw... Agent: GlobalIPCounselors, LLP

  
11/04/2010 > patent applications in patent subcategories. recently filed with US Patent Office

20100278672 - Method and apparatus for lubricating a screw pump system: A pump system includes inlet chambers, an outlet chamber, and rotors disposed inside the inlet chambers and the outlet chamber to pump a process fluid from the inlet chambers to the outlet chamber and to direct the process fluid to a separator. A gear chamber is configured to receive a... Agent: General Electric Company Global Research

20100278673 - Method and apparatus for managing fluid flow within a screw pump system: In a pump system, a process fluid is directed into inlet chambers of a pump casing at an inlet pressure, and a plurality of rotors disposed inside the pump casing are rotated to pump the process fluid from the inlet chambers to an outlet chamber located between the inlet chambers,... Agent: General Electric Company Global Research

20100278671 - Method and apparatus for reducing particles in a screw pump lubricant: A screw pump system has a plurality of rotors disposed inside a pump casing. Each rotor comprises a shaft and a set of threads disposed on the shaft configured to mesh with at least one other set of threads. A plurality of bearings are coupled to each end of each... Agent: General Electric Company Global Research

20100278674 - 2 stage rotary compressor: The present invention provides a 2 stage rotary compressor (100) including a hermetic container (101), a 2 stage compression assembly provided in the hermetic container, wherein a low pressure compression assembly (120), a middle plate (130) and a high pressure compression assembly (140) are successively stacked from any one of... Agent: Ked & Associates, LLP

20100278675 - 2 stage rotary compressor: The present invention provides a 2 stage rotary compressor including a hermetic container (101) defining an outward appearance of the compressor (100), a 2 stage compression assembly provided in the hermetic Container, wherein a low pressure cylinder (121), a middle plate (140) and a high pressure cylinder (131) successively stacked... Agent: Ked & Associates, LLP

20100278676 - Gear wheel pump: The invention relates to a gear wheel pump with two meshing gear wheels which are rotatably mounted within a pump housing by means of a driven driveshaft and a crankshaft journal and which form a pumping channel system between a pump inlet and a pump outlet. Several gaps are formed... Agent: Alston & Bird LLP

20100278678 - Screw compressor: A screw compressor includes a casing having a cylinder, a cylindrical-shaped screw rotor disposed in the cylinder, a gate rotor and a seal portion. The screw rotor has a plurality of spiral-shaped groove portions formed in an outer peripheral surface. The gate rotor has a plurality of tooth portions engaged... Agent: GlobalIPCounselors, LLP

20100278677 - Single-screw compressor: A single-screw compressor includes a casing, a screw rotor accommodated in the casing, a gate rotor, and a gate rotor supporting member rotatably supporting the gate rotor. The gate rotor includes a plurality of flat-plate-shaped gates formed in a radial pattern and meshing with a helical groove of the screw... Agent: GlobalIPCounselors, LLP

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