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Rotary expansible chamber devices March listing by industry category 03/09

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.
  
03/26/2009 > patent applications in patent subcategories. listing by industry category

20090081061 - Peripherally pivoted oscillating vane machine: The present invention is directed to a peripherally pivoted oscillating vane machine (OVM). The OVM has been optimized for performance and efficiency. This has been accomplished by reducing loads on the drive mechanism and by employing de-phased motion of the peripherally pivoted vanes in conjunction with improved porting configurations as... Agent: Elmore Patent Law Group, PC

20090081062 - Scroll compressor with high side to low side oil bleed valve: A scroll compressor is provided with an oil bleed valve that selectively communicates a discharge pressure chamber to a suction pressure chamber. The oil bleed valve controls flow of hot oil through a passage and onto a safety shutoff switch for an electric motor.... Agent: Carlson, Gaskey & Olds, P.C.

20090081064 - Rotary compressor: A rotary compressor having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable axially... Agent: Ballard Spahr Andrews & Ingersoll, LLP

20090081063 - Rotary fluid-displacement assembly: A rotary fluid-displacement assembly having a housing and a rotor positioned within an internal cavity of the housing. The rotor being configured to rotate about a rotor axis of rotation eccentric to a housing longitudinal axis. A gate is also provided that is slidably mounted therewith the rotor and movable... Agent: Ballard Spahr Andrews & Ingersoll, LLP

20090081065 - Rotary working machine provided with an assembly of working chambers with periodically variable volume, in particular a compressor: Rotary working machine provided with an assembly of working chambers with periodically variable volume, in particular a compressor, consisting of a stator with a controlling cam and a surrounding cylindrical rotator, with which are connected working elements, rotating together with it, driven by the cam and forming, together with an... Agent: Brinks Hofer Gilson & Lione

  
03/19/2009 > patent applications in patent subcategories. listing by industry category

20090074598 - Variable capacity vane pump with force reducing chamber on displacement ring: A novel variable displacement vane pump is provided wherein pressurized working fluid is provided to a portion of the pump chamber to act on the outside of the capacity varying ring to substantially balance the force created by the high pressure working fluid inside the ring. As the resultant high... Agent: Magna International, Inc.

20090074599 - Stator casing for eccentric worm pumps: The invention relates to a stator casing for eccentric worm pumps comprising an elastic lining, the cylindrical stator casing having a surface on the inner side, along the longitudinal axis whereof grooves are incorporated.... Agent: St. Onge Steward Johnston & Reens, LLC

20090074600 - Rotary compressor: A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve o... Agent: GlobalIPCounselors, LLP

20090074601 - Metal face seal assembly and machine using same: A metal face seal assembly for sealing between machine components includes a first subassembly and a second subassembly rotatable relative to the first subassembly. Compressible seals positioned between inner and outer seal members of the subassemblies provide a non-axial sealing load, whereas at least one metallic biaser provides an axial... Agent: Caterpillar C/o Liell, Mcneil & Harper

20090074602 - Rotary type fluid machine: A blade moves backward/forward to enter four different states, namely a first state in which the tip thereof is in sliding contact with the internal peripheral surface of an external side cylinder part, a second state in which the tip is positioned in the cutaway portion of a ring-shaped piston... Agent: GlobalIPCounselors, LLP

  
03/12/2009 > patent applications in patent subcategories. listing by industry category

20090068046 - Compressor and manufacturing method thereof: The compressor includes a first constituent element and a first slider. The first constituent element is capable of being laser welded. The first slider is composed of cast iron capable of being laser welded and having a carbon content of from 2.0 wt % or more to 2.7 wt %... Agent: GlobalIPCounselors, LLP

20090068045 - Compressor having a shutdown valve: A compressor includes a shell, a compression mechanism supported within a suction pressure region of the shell and including a discharge outlet in communication with the discharge chamber, and a discharge valve assembly. The discharge valve assembly includes a valve member, a valve stop including an opening therethrough, and a... Agent: Harness, Dickey & Pierce, P.L.C

20090068043 - Compressor having shell with alignment features: A compressor includes a shell formed from a piece of material having first, second, third, and fourth ends. The third and fourth ends extend between the first and second ends and are coupled to one another. The first and second ends form longitudinal ends of the shell. The first end... Agent: Harness, Dickey & Pierce, P.L.C

20090068044 - Compressor with retaining mechanism: A compressor may include a shell and a housing fixed within the shell. A compression mechanism may be supported by the housing and may include an orbiting scroll member and a non-orbiting scroll member that are meshingly engaged to form a series of compression pockets. A retaining assembly may include... Agent: Harness, Dickey & Pierce, P.L.C

20090068047 - Closed type fluid machine: An electric scroll compressor (1) as a closed type fluid machine, comprising a housing (10) in which a scroll unit (18) and an armature (40) driving the scroll unit (18) are contained. A resin coating layer (72) with a thickness of 50 μm or more is formed on at least... Agent: Baker Botts LLP C/o Intellectual Property Department

20090068048 - Compressor sealing arrangement: A compressor may include a shell, first and second scroll members, a partition and a first annular seal. The partition may be fixed to the shell and may overly the first scroll member. The partition may include first and second sides having a second discharge opening passing therethrough and being... Agent: Harness, Dickey & Pierce, P.L.C

20090068049 - Rotary equipment and oil pump: An oil pump has: a base part having a working chamber; and a rotor provided rotatably in the working chamber. The base part is configured by a plurality of split bodies. At least one of the plurality of split bodies is made of aluminum alloy, and on which an opposed... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090068050 - Radial axis, spherical based rotary machines: A rotary machine including: a housing; a plurality of rotor spindles aligned along three orthogonal axes; rotor blades on the rotor spindles and arranged relative to each other so that each rotor blade is in tangential sliding contact with at least two other rotor blades and forming a plurality of... Agent: Wilmerhale/boston

  
03/05/2009 > patent applications in patent subcategories. listing by industry category

20090060767 - Axial compliance: A scroll compressor has its back pressure chamber defined by two seals. The two seals are on different planes. Locating the seals on two distinct planes allows a more direct connection for a tap through a compression chamber and the back pressure chamber. In addition, the volume of the back... Agent: Carlson, Gaskey & Olds, P.C.

20090060768 - Scroll fluid machine: A scroll fluid machine having a scroll unit that includes a fixed scroll (36) and a movable scroll (38) that are each constructed from an end plate and a scroll wall integral with the end plate, and also includes a chip seal (42) provided at the tip of the scroll... Agent: Baker Botts LLP C/o Intellectual Property Department

20090060769 - Pumping apparatus: A pumping apparatus includes a pump housing, a pumping member which is rotatable in the housing to pump fluid, the pumping member being provided on a support which is in use, driven, the housing including in communication with an inlet, a lower pressure region, and in communication with an outlet,... Agent: Marshall, Gerstein & Borun LLP

20090060770 - Gear pump: A gear pump applicable for feeding a high-pressure and high-viscosity fluid, such as a molten resin is provided. In the gear pump 100, the fluid is fed from a suction port side to a discharge port side by the rotation of gears. The gears are formed in a pair and... Agent: J C Patents, Inc.

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