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Rotary expansible chamber devices January USPTO class listing 01/08

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.
01/31/2008 > patent applications in patent subcategories.

20080025859 - Controlled thickness resilient material lined stator and method of forming: The present invention relates to a resilient material lined stator and method of forming. A method of forming a resilient material lined stator can include disposing a resilient material tube 400 with a profiled helical inner surface 401 into the bore of a body 420. A cast material 410 can... Agent: Schlumberger Oilfield Services

20080025858 - Composite dry vacuum pump having roots and screw rotor: A complex dry vacuum pump including a root rotor and a screw rotor is disclosed for manufacturing semiconductors and/or displays in a vacuum state in a process chamber, and discharging gaseous material and/or by-products generated during manufacturing to the exterior of the process chamber. The pump can provide high gas... Agent: Kelley Drye & Warren LLP

20080025860 - Two-stage rotary compressor: In a two-stage rotary compressor of the present invention, an oil supply hole connecting an oil reservoir on a bottom portion in a closed vessel to a suction port formed in a lower supporting member is provided in the lower supporting member attached to the lower side of a high... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20080025861 - Sliding element and fluid machine: A lubrication part serving as a bearing metal is provided in a scroll compressor at a sliding part between a cylindrical part of a slide busing and an extension of a movable scroll. An inner periphery of the lubrication part is formed so that its iron substrate is given a... Agent: GlobalIPCounselors, LLP

20080025862 - External toothed wheel pump comprising a relieving pocket: An external toothed wheel pump, comprising a delivery chamber comprising an inlet and an outlet for a fluid; a first feed wheel and a second feed wheel which can be rotationally driven for delivering the fluid and are in a toothed engagement with each other which separates the outlet from... Agent: Ratnerprestia

01/24/2008 > patent applications in patent subcategories.

20080019855 - Controller for motor: A controller for a motor cleans, as necessary, a hydraulic chamber that generates hydraulic oil for changing a phase difference between two rotors so as to restrain sludge from building up in the hydraulic chamber. A motor has a first rotor and a second rotor that can be relatively rotated... Agent: Arent Fox LLP

20080019856 - Electric pump: A pump case of an electric pump is constructed by coupling a first pressed member formed with a cylindrical part for holding a first rolling ball bearing rotatably supporting a rotary shaft, and a second pressed member formed with a recess for receiving an inner rotor provided at a tip... Agent: Mcginn Intellectual Property Law Group, PLLC

01/17/2008 > patent applications in patent subcategories.

20080014107 - Pump: A positive-displacement pump having an eccentrically positioned internal ring gear and pinion within a pump housing. Pressurized operating fluid is provided by the pump to actuate an actuation piston of a clutch unit, such as a double clutch unit. The clutch unit is drivingly coupled with the pump for movement... Agent: Alfred J Mangels

20080014108 - Vane cell pump: The present disclosure relates to a vane cell pump (12) which includes an internal rotor (16) and a plurality of vanes (20) which are displacably mounted in a radial manner in the internal rotor, essentially, in radial slots (18) and are directly or indirectly guided on the internal circumferential surface... Agent: Brinks Hofer Gilson & Lione

01/10/2008 > patent applications in patent subcategories.

20080008612 - Muffler of scroll compressor: Disclosed herein is a muffler of a scroll compressor. The muffler includes a first muffler having a pair of chambers defined above an outlet of a fixed scroll to communicate with the outlet and a gas passage hole formed at the center of an upper end thereof, and a second... Agent: Greenblum & Bernstein, P.L.C

20080008614 - Horizontal type scroll compressor: In a horizontal type scroll compressor discharging compressed gas from a discharge pipe provided in a sealed container in which a compressor mechanism portion and an electric motor portion are stored, for preventing a refrigerator oil from flowing out of a compressor, for supplying an oil in an oil holding... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080008613 - Oil supply structure of scroll compressor: Disclosed herein is an oil supply structure of a scroll compressor. The oil supply structure is provided to prevent a slender hole of an oil supply screw from being clogged with sludge, the oil supply screw being provided between a backpressure space, which is defined between an orbiting scroll and... Agent: Greenblum & Bernstein, P.L.C

20080008611 - Stator clamping device for eccentric screw pump: The invention relates to a clamping device which clamps the pump stator with the pump housing and an additional pump end part. The width of the clamping bars is at least 20% of the cross section of the pump stator in order to stabilise the clamping device and the simplify... Agent: St. Onge Steward Johnston & Reens, LLC

20080008615 - Pump: A pump, in particular a vacuum pump for motor vehicles, wherein a rotor with at least one vane is mounted inside a pump housing, the rotor being rotatably driven by the combustion engine of the motor vehicle via a coupling device. An intermediate element is arranged between the rotor and... Agent: Davidson, Davidson & Kappel, LLC

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