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Rotary expansible chamber devices October categorized by USPTO classification 10/09

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.
10/30/2009 > patent applications in patent subcategories.
10/23/2009 > patent applications in patent subcategories.
10/15/2009 > patent applications in patent subcategories.

20090257898 - Rotary pump or motor with orbital piston aspiration: Rotary components are described that include a housing comprising a rotor having a rotor working face and a gate having a gate working face and a pocket; at least one vane, wherein the vane is coupled to the rotor; at least one wiper coupled to the vane; a plurality of... Agent: Buchalter Nemer

20090257899 - Variable displacement vane pump: A variable displacement vane pump includes a first and a second fluid pressure chamber (31,32) where the cam ring (4) is made eccentric to the rotor (2) by a pressure difference between the first and the second fluid pressure chamber (31,32), a control valve (21) for controlling a pressure of... Agent: Rabin & Berdo, PC

20090257900 - Shaft coupling for scroll compressor: A coupling mechanism for a scroll compressor comprises an orbiting scroll disk, a retention bolt, a bearing shaft and a retention nut. The orbiting scroll disk includes a first face configured to engage a stationary scroll disk to compress a working fluid, and a second face having a hub. The... Agent: Kinney & Lange, P.A.

20090257901 - Power steering pump having intake channels with enhanced flow characteristics and/or a pressure balancing fluid communication channel: A power steering pump having a plate disposed between a first surface and an intake chamber, wherein an intake flow channel defined by the first surface is in fluid communication with the intake chamber through an opening extending through the plate, the plate opening having opposed terminal ends. The intake... Agent: Howard & Howard Attorneys PLLC

20090257902 - Compressor device: An improved multi-stage compressor device for compressing gas, which compressor device (1) mainly consists of at least two compressor elements (2-5-28) placed in series one after the other, at least one of which (5-28) is driven by a motor (9), characterized in that at least one other compressor element (2)... Agent: Bacon & Thomas, PLLC

10/08/2009 > patent applications in patent subcategories.

20090252630 - Single-shaft eccentric screw pump: A double/triple-thread single-shaft eccentric screw pump is provided. The rotor of the pump overhangs little in comparison with the flange type connecting structure. The whole length of the pump is short, and the pump casing of the pump is short and small in diameter, so that the pump is small... Agent: Alleman Hall Mccoy Russell & Tuttle LLP

20090252631 - Magnetic trap for ferrous contaminants in lubricant: A compressor includes a tubular vertical shaft, which rotates about its vertical axis, a cylinder block for supporting the tubular vertical shaft, a rotor for driving the rotation of the tubular vertical shaft, and a stator affixed to the cylinder block. A lubricant is channelled from the lower end of... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090252632 - Device to prevent the formation of condensate in compressed gas and compressor unit equipped with such a device: Device to prevent the formation of condensate in compressed gas coming from an oil-injected compressor element (2) which is connected to an oil separator (9) which is connected to the above-mentioned compressor element (2) by means of an injection pipe (12), and whereby a cooler (14) is provided in the... Agent: Bacon & Thomas, PLLC

20090252633 - Lobe pump system and method of manufacture: A method of manufacturing a rotor to be used in a dual-rotor lobe pump system for pumping a material at a periodic rate is provided. The method includes selecting a desired periodic flow rate for the material, selecting a number of lobes for the rotor, and selecting either a thickness... Agent: Christie, Parker & Hale, LLP

10/01/2009 > patent applications in patent subcategories.

20090246054 - Three-stage screw compressor: The invention relates to a multi step helical screw compressor unit which consists of a drive housing (90), wherein a first, second, and third helical screw compressor (60, 70, 80) are secured in a protruding manner parallel to each other and are driven together by a drive toothed wheel in... Agent: Michael Best & Friedrich LLP

20090246055 - Discharge chamber for dual drive scroll compressor: A dual drive compressor is disclosed including a discharge chamber having a wall disposed therein forming a plurality of discharge zones within the discharge chamber to attenuate pulsations caused by a fluid received in the compressor and improve a performance of the compressor.... Agent: Fraser Clemens Martin & Miller Llc

20090246057 - Scroll compressor: There is disclosed a scroll compressor having an object of stabilizing the moving of an orbit scroll while suppressing the start load of the scroll compressor. In the scroll compressor, a slide bush having a slide face forming a predetermined angle with respect to the direction of gas load of... Agent: Kratz, Quintos & Hanson, LLP

20090246056 - Sealed type scroll compressor: There is disclosed a sealed type scroll compressor which decreases a sliding loss between a thrust ring and a orbit scroll and improves the efficiency of the sealed type scroll compressor while preventing the leakage of a refrigerant between a fixed scroll and the orbit scroll, and the compressor provides... Agent: Kratz, Quintos & Hanson, LLP

20090246058 - Scroll-type fluid machine: A scroll-type fluid machine comprising: a casing; a fixed scroll; an orbiting scroll; and an auxiliary crank device in which to prevent the orbiting scroll from being rotated, wherein the auxiliary crank device comprises: a fixed-side bearing body provided on either a casing side or a fixed scroll side; an... Agent: Rader Fishman & Grauer Pllc

20090246059 - Scroll compressor: A scroll compressor includes a fixed scroll, an orbiting scroll, a crankshaft rotationally supported on a frame to drive the orbiting scroll, a seal member between an orbiting scroll back surface and the frame, a back pressure chamber of discharge pressure at an inner peripheral side of the seal member,... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090246060 - Compressor: A compressor having a discharge chamber into which compressed refrigerant gas is discharged, a discharge passage connected to the discharge chamber, an oil separation device that centrifugally separate oil from the refrigerant gas, an oil reservoir chamber that communicates with a separation chamber through an oil passage and retains the... Agent: Locke Lord Bissell & Liddell LLP Attn: Ip Docketing

20090246061 - Gas compressor: In a gas compressor, a cyclone block is configured to include a substantially cylindrical space into which a compressed gas is introduced to separate refrigeration oil from the gas. A pressure bypass is formed in the substantially cylindrical space defined by an outer cylindrical unit and an inner cylindrical unit... Agent: Wenderoth, Lind & Ponack, L.l.p.

20090246062 - Slide valve actuation for overpressure safety: A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. A piston (124) is in a cylinder (128) and mechanically coupled to the... Agent: Bachman & Lapointe, P.c. (utc)

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