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Rotary expansible chamber devices July category listing 07/09

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.
07/30/2009 > patent applications in patent subcategories.

20090191078 - Lubricating pump: A lubricating pump having a first stage and a second stage; the first stage in turn has an intake connectable hydraulically to a tank of lubricating fluid, and a delivery outlet connectable hydraulically to a lubricated member; the first stage compresses the lubricating fluid from the tank to a pressure... Agent: Berenato, White & Stavish, LLC

20090191080 - Scroll compressor: A scroll compressor an orbiting scroll member including a second end plate, a second wrap extending from the second end plate and meshingly engaged with the first wrap to form a suction pocket in fluid communication with a suction pressure region of the compressor, intermediate compression pockets, and a discharge... Agent: Harness, Dickey & Pierce, P.L.C

20090191079 - Temporary self-lubricating coating for scroll compressor: A sealed compressor is provided with a spray lubricant that will provide lubricant at various bearing surfaces during initial start-up of the compressor. The lubricant will wear away quickly after initial run-in, but liquid lubricant will be provided by that time.... Agent: Carlson, Gaskey & Olds, P.C.

20090191081 - Scroll compressor improved in function of oil circulation and back pressure control: Provided is a scroll compressor having an improved function of oil circulation and back pressure control. The scroll compressor includes: a housing; a drive part for generating a rotational force; a drive shaft driven by the drive part; and a scroll compression part including a stationary scroll fixed regardless of... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20090191082 - Screw compressor: A screw compressor is disclosed wherein a pair of rotor shafts are disposed horizontally and an oil sump is formed at the bottom of a bearing casing which accommodates bearings for supporting the rotor shafts, a bearing lower portion being soaked into oil present in the oil sump for lubrication.... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090191083 - Rotary blower with isothermal air jacket: A rotary blower with an isothermal air jacket having multiple interconnected and synchronized parallel multi-lobe rotors with the same number of lobes for propelling flow from a suction port to a discharge port of an inner casing without internal compression. The isothermal air jacket is shaped to surround the blower... Agent: Paul Xiubao Huang

07/23/2009 > patent applications in patent subcategories.

20090185925 - Method of operation of a spherical positive displacement rotary machine and devices for carrying out said method: The invention relates to rotary machines, with nonparallel rotor and pistons axes of rotation. A spherical cavity (4) formed by a body (1) comprises a rotor (7), which is arranged therein and is provided with a through slot (21) in which a piston (8) in the form of a through-cutout... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090185927 - Key coupling and scroll compressor incorporating same: A scroll compressor includes a movable scroll compressor body and a fixed scroll compressor body that are arranged for relative orbital movement relative to one another to facilitate compression of refrigerant. To guide the orbital movement, a Oldham key coupling is provided that may include four keys spaced in separate... Agent: Reinhart Boerner Van Deuren P.C.

20090185929 - Mounting base and scroll compressor incorporating same: A scroll compressor assembly includes a mounting base with a pair of support ribs formed into the mounting base, for structurally strengthening the support provided by the mounting base. The mounting base may either support the scroll compressor housing as a separate component part or may integrally form part of... Agent: Reinhart Boerner Van Deuren P.C.

20090185926 - Scroll compressor and baffle for same: A scroll compressor includes a baffle member in a high pressure region of the housing where compressed fluid is stored. The baffle serves to carry and transfer pressure loads away from the central region to an outer periphery region where such loads can be transferred to the outer housing. Deflection,... Agent: Reinhart Boerner Van Deuren P.C.

20090185928 - Scroll compressor suction flow path & bearing arrangement features: A scroll compressor includes an oil separation region generally formed between the motor housing and upper bearing member. A long labyrinth channel is provided with the suction refrigerant gas flow path being redirected to facilitate coalescing of oil mist droplets out of the gas stream. An integral deflector plate can... Agent: Reinhart Boerner Van Deuren P.C.

20090185930 - Scroll compressor with housing shell location: A scroll compressor includes a feature for location of a housing shell section off of one of the scroll compressor bodies. According to this aspect, a scroll compressor comprises a housing including a shell section; scroll compressor bodies having respective bases and respective scroll ribs that project from the respective... Agent: Reinhart Boerner Van Deuren P.C.

20090185931 - Shaft mounted counterweight, method and scroll compressor incorporating same: A counterweight mounted to a drive shaft in a scroll compressor is provided. The drive shaft has a central annular segment generally concentric about the central axis and an eccentric annular segment offset from the central axis that can be used for driving the movable scroll compressor body. A counterweight... Agent: Reinhart Boerner Van Deuren P.C.

20090185932 - Scroll compressor build assembly: A scroll compressor build assembly is provided. An outer housing includes multiple shell sections that interfit to provide internal steps that provide seating surfaces. One or both bearing members can use the internal seats. The outer housing may comprise three shells that telescopically interfit and that can be welded with... Agent: Reinhart Boerner Van Deuren P.C.

20090185933 - Non symmetrical key coupling contact and scroll compressor having same: A scroll compressor includes a movable scroll compressor body and a fixed scroll compressor body that are arranged for relative orbital movement relative to one another to facilitate compression of refrigerant. To guide the orbital movement, a Oldham key coupling is provided that may include four keys spaced in separate... Agent: Reinhart Boerner Van Deuren P.C.

20090185936 - Scroll compressor: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll. The scroll compressor includes a compression section constituted of an orbiting scroll which... Agent: Buchanan, Ingersoll & Rooney PC

20090185934 - Scroll compressor bodies with scroll tip seals and extended thrust region: A scroll compressor includes scroll compressor bodies with axial tip seals projecting from the respective scroll ribs of fixed and movable scroll compressor bodies. An extended thrust region is provided in surrounding relation to an inner axial tip sealing region to provide for carrying thrust loads in the event that... Agent: Reinhart Boerner Van Deuren P.C.

20090185935 - Scroll machine: A compressor may include a shell, a compression mechanism, and a seal assembly. The shell may define a first discharge passage. The compression mechanism may be supported within the shell and may include first and second scroll members. The first scroll member may include a second discharge passage. The seal... Agent: Harness, Dickey & Pierce, P.L.C

20090185937 - Positive-displacement rotary machine: The invention relates to rotary machines provided with nonparallel axes of a rotor and pistons. The inventive positive-displacement rotary machine comprises a body, the working surface of which is embodied in the form of a part of a segment of sphere, a rotor which is provided with a working surface... Agent: Warner Norcross & Judd LLP

20090185938 - Water-lubricated compressor: A water-lubricated compressor is disclosed, in which a discharge on-off valve is disposed in a discharge channel located between a discharge port of a compressor body and a water separating/recovering unit and a water circulation on-off valve is disposed in a water circulation channel located between a water cooler and... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090185939 - Trochoid pump: A trochoid pump 10, comprising a driving shaft 13, wherein a drive gear 17 comprising of a bevel gear is fixed on one end thereof and a inner rotor 11 is penetrated onto the other end thereof, an outer rotor 12, the center of which is decentered to the inner... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20090185940 - Method for manufacturing trochoid pump and trochoid pump obtained: The present invention enables the manufacture of a trochoid pump having a crescent which has been considered theoretically impossible by employing an inner rotor of a trochoid pump. An inner rotor having a predetermined number N of teeth that is equal to or larger than 4 is formed in advance.... Agent: Mcginn Intellectual Property Law Group, PLLC

07/16/2009 > patent applications in patent subcategories.

20090180907 - Two-stage rotary compressor: A two-stage rotary compressor includes a sealed cylindrical compressor housing in which first, second, third communication holes are provided apart in an axial direction on an outer peripheral wall; an accumulator held at an outside part of the housing; a low-pressure connecting pipe for connecting a bottom communication hole of... Agent: Mcdermott Will & Emery LLP

20090180908 - Oil pump and automatic transmission including the same: An oil pump includes a pump cover covering a recess in a side face of a pump body to form a gear compartment therebetween. A drive gear and a rotatably driven gear are meshed and mounted in the gear compartment. Working spaces R are formed by the engagement of the... Agent: Bacon & Thomas, PLLC

20090180910 - Helium enclosed compressor: The helium enclosed compressor uses a helium gas as a working gas, houses a compressor section and a motor section including a stator having coil ends and a stator within an enclosed vessel, and discharges the helium gas, which has been discharged into the enclosed vessel from a discharge port... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090180909 - Scroll-type apparatus: Scroll-type pumping apparatus comprises a stator (104) comprising a fixed scroll member (106) having an end plate with a first spiral wrap (110) extending therefrom; an orbital scroll member (108) having an end plate with a second spiral wrap (112) extending therefrom to intermesh with the first spiral wrap; a... Agent: Edwards Vacuum, Inc.

20090180911 - Revolving vane compressor: A revolving vane compressor is disclosed that comprises a cylinder, a rotor housed within the cylinder and being eccentrically mounted relative to the cylinder, and a vane mounted in a slot in the rotor for sliding movement relative to the rotor. The vane is securely connected to the cylinder to... Agent: Womble Carlyle Sandridge & Rice, PLLC

20090180912 - Rotary compressor: A rotary compressor includes a compressing section including a cylindrical cylinder, two end plates closing both ends of the cylinder, respectively, and a piston held by an eccentric section of a rotary shaft driven to rotate by a motor. A working chamber is formed between the piston and the cylinder... Agent: Mcdermott Will & Emery LLP

20090180913 - Sliding vane pump with internal cam ring: The present disclosure provides a fluid pump having a pump motor, a pump drive shaft and a vane pump assembly. The pump assembly includes a pump housing having fluid inlet and outlet ports. The pump assembly also includes a distal bearing member having first and second sides and a second... Agent: Luedeka, Neely & Graham, P.C.

07/09/2009 > patent applications in patent subcategories.

20090175748 - Multi-stage compressor unit for refrigeration system: A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant comprises a first compressor sub-unit having a first stage and a second stage, and a second compressor sub-unit in parallel with the first compressor sub-unit and having a first stage. The first and second stages of the... Agent: Kinney & Lange, P.A.

20090175749 - Fluid displacement apparatus having pressure sensing device: A fluid displacement apparatus includes a housing for receiving a refrigerant, a driving shaft rotatably received in the housing, a magnetic clutch attached to the driving shaft for rotation transmitting purposes, a fixed scroll disposed in the housing, an orbiting scroll rotatably received and engaged in the housing and interfitting... Agent: Charles E. Baxley, Esquire

20090175750 - Variable delivery vane oil pump, in particular for oil: A variable delivery vane pump, in particular for oil, is provided with a stator (10) eccentrically mounted about a rotor (9), which is adapted to turn about one own longitudinal axis (6), and presents a plurality of outwardly radially open grooves (15) and slidingly engaged, each, by a respective vane... Agent: Husch Blackwell Sanders LLP

20090175751 - Electric pump: According to an aspect of the present invention, an electric pump includes: a housing; an outer rotor; an inner rotor; a base member facing one side surface of the outer rotor and one side surface of the inner rotor; a side plate member, having a facing surface facing the other... Agent: Darby & Darby P.C.

07/02/2009 > patent applications in patent subcategories.

20090169404 - High temperature progressive cavity motor or pump component and method of fabrication: The present application discloses a progressive cavity motor or pump component, either stator or rotor, which provides a high glass transition temperature polymeric surface on the component which becomes resilient at or below the expected operating temperature of the motor or pump, but which remains solid at ambient temperatures, along... Agent: The Dickinson Law Offices Attn: David Dickinson

20090169405 - Compressor: There is provided with a compressor comprising: a compressor main body in which fluid inhaled from an inhale port is compressed, and the compressed fluid is exhausted from an exhaust port; and a pressure retaining device where provided on the exhaust port side of the compressor main body, and retaining... Agent: Rader Fishman & Grauer PLLC

20090169406 - Scroll compressor: A scroll compressor, wherein a guide passage facing the supply passage of a fixed side substrate part is formed at the outer peripheral portion of a fixed scroll engaged with a movable scroll along the axial direction of the fixed scroll. A lubricating oil is stored in an oil storage... Agent: Lahive & Cockfield, LLP Floor 30, Suite 3000

20090169407 - Rotor compressor: A rotary piston compressor comprises a cylinder block (100), an eccentric rotor group (200) being fitted in the chamber of the cylinder block, a shaft (2) and a separating means (40). The eccentric rotor group (200) comprises a cylindrical rotor (4) provided on the shaft (2) and rotatable therewith, and... Agent: Babcock Ip, PLLC

20090169408 - Gear pump: Gearwheel pump, having a housing with at least two intermeshing gears with shafts supported by slide bearings lubricated with pumping medium (M) fed from a suction side to a pressure side, a return duct which leads pumping medium which flows outward through the plain bearing back to the suction side,... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090169409 - Vane machine, in particular vane pump: A vane machine comprises an inner rotor (28) and an outer rotor (51). A plurality of radially extending vane elements (32) separates first vane chambers (89) from one another. The van elements (32), with a radially inner end region (34), are accommodated in the inner rotor (28) in a radially... Agent: Dreiss, Fuhlendorf, Steimle & Becker

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