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Rotary expansible chamber devices September class, title,number 09/12

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.
09/27/2012 > 3 patent applications in 2 patent subcategories.

20120244026 - Counterweight incorporated into slider block for scroll compressor: A slider block has an inner bore which receives an eccentric pin, and a generally flat drive surface over a limited circumferential extent to be engaged by a flat drive surface on an eccentric pin. A counterweight is positioned on an outer periphery of the slider block. The counterweight has... Agent:

20120244028 - Internal gear pump for a hydraulic vehicle braking system: The disclosure relates to an internal gear pump for a slip-regulated hydraulic vehicle braking system, comprising one pressure piece on either side of the gear wheels of said pump. According to the disclosure, a disk consisting of wear-resistant material is arranged between the pressure piece and the gear pump. The... Agent: Robert Bosch Gmbh

20120244027 - Pump device: The invention has: a housing; a pump section formed of a drive gear unit and a driven gear unit; a main flow channel through which oil pressure is applied to the driven gear unit in a discharge volume reduction direction; a first branching flow channel through which oil pressure that... Agent: Yamada Manufacturing Co., Ltd.

09/20/2012 > 6 patent applications in 6 patent subcategories.

20120237379 - Rotary hydraulic actuator with hydraulically controlled position limits: A rotary hydraulic actuator includes a housing defining a chamber, a first boss, and a port block with a bore communicating with the chamber. The port block includes rotor supply and drain ports communicating with the bore, and a stator port communicating with the chamber through a stator hole in... Agent: General Electric Company

20120237380 - Downhole backspin retarder for progressive cavity pump: A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller... Agent: Weatherford/lamb, Inc.

20120237381 - Scroll-type compressor for vehicle: A scroll-type compressor for a vehicle, comprising a housing, a fixed scroll and a movable scroll provided in the housing, and a drive mechanism that is provided in the housing and that drives the movable scroll in a manner that disables rotating and enables orbit, by rotation of a drive... Agent: Kabushiki Kaisha Toyota Jidoshokki

20120237382 - Screw expander system: A screw expander system includes a screw expander provided with an expansion space for expanding an operating medium, an operating medium inlet, an operating medium outlet, oil inlets, and oil outlets, a condenser which condenses a mixture, sent from the screw expander, of oil and the operating medium, a pump... Agent: Kabushiki Kaisha Kobe Seiko Sho (kobe Steel, Ltd.)

20120237383 - Hydraulic motor or pump with tangential pistons with annular or sectional shape on ordinary or planetary gear for high torque, and power performance and hydraulic and mechanical efficiency: A hydraulic motor or pump includes eccentric shafts arranged in a planet position with respect to the output shaft, subject to the action of two propelling members for each shaft, which are arranged in a tangential position with respect to the output shaft and act on intermediate planetary fixed parts... Agent: Soilmec S.p.a.

20120237384 - Fretting-corrosion-prevention oscillating vane type pump actuator: Disclosed herein is an oscillating vane type pump actuator. The pump actuator of the present invention provides a method of preventing fretting corrosion from being caused on joined surfaces of elements. A cylinder (3c) has a comparatively low radial strength, and each of side covers (1c) and (2c) has a... Agent: Korea Ocean Research And Development Institute

09/13/2012 > 6 patent applications in 4 patent subcategories.

20120230853 - Scroll compressor: In a scroll compressor, it is hard to zone a high pressure chamber and a back pressure chamber which are formed in a back face of an orbiting scroll by a sealing means, increase a feeding amount to the high pressure chamber and the back pressure chamber at a low... Agent: Hitachi Appliances, Inc.

20120230854 - Scroll compressor: A scroll compressor with high efficiency is provided according to the present invention. The scroll compressor compresses a refrigerant by meshing of an orbiting scroll and a fixed scroll, wherein the orbiting scroll includes a back pressure hole which intermittently connects a compression chamber and a back pressure chamber per... Agent: Hitachi Appliances, Inc.

20120230855 - Scroll compressor: A scroll compressor includes a fixed scroll having a fixed wrap, and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to define a first compression chamber between an inner surface of the fixed wrap and an outer surface of the orbiting wrap, and to define a... Agent:

20120230856 - Helical gear pump: A helical gear pump includes a second helical gear provided coaxially with a drive helical gear, a third helical gear engaged with the second helical gear and provided on a third shaft different from a shaft of the drive helical gear and a shaft of a driven helical gear, and... Agent: Jatco Ltd

20120230858 - Screw pump: A first rotor and a second rotor have helical teeth each including a dedendum portion, an addendum portion, and an addendum tip portion. Profiles of the addendum portions of the first and second rotors are formed by cycloidal curves. Profiles of the dedendum portions of the first and second rotors... Agent: Kabushiki Kaisha Toyota Jidoshokki

20120230857 - Water injection type screw fluid machine: A screw fluid machine has a first non-contact seal, a second non-contact seal and a lip seal disposed between a rotor chamber and a bearing for a rotor shaft located on the high pressure side, and in this order from the rotor chamber side. It includes a pressurized communicating channel... Agent: Kabushiki Kaisha Kobe Seiko Sho (kobe Steel, Ltd.)

09/06/2012 > 3 patent applications in 3 patent subcategories.

20120224989 - Pivoting, hinged arc vane rotary compressor or expander: A rotary compressor or expander include a cylindrical housing chamber, a rotatable cylindrical rotor mounted eccentrically with respect to housing chamber centre, a cylindrical rotor liner free to move around the rotor, and a pivoting generally circular arc vane hinged to the rotor liner. Cavity or buckets engraved to the... Agent: Pars Makina Sanayi Ve Ticaret Limited Sirketi

20120224990 - Helium enclosed compressor: Helium enclosed compressor. A compressor and a motor section with stator having coil ends and a rotor, are housed within an enclosed vessel partitioned into discharge and motor chambers by a frame. The compressor section has a stationary scroll having a spiral wrap standing upright at a disk-like panel and... Agent:

20120224991 - Positive displacement fluid pump: A fluid pump includes a motor, an inner gear rotor and an outer gear rotor. The inner gear rotor is driven for rotation about an axis by the motor and has a plurality of outwardly extending teeth. The outer gear rotor has a plurality of inwardly extending teeth that are... Agent: Ti Group Automotive Systems, L.L.C.

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