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Rotary expansible chamber devices April category listing, related patent applications 04/10

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.
04/29/2010 > patent applications in patent subcategories.

20100104462 - Pump or motor: The invention relates to a pump or motor for liquid or gaseous media. The pump or motor has a shaft, which faces a working part, and has a common inclined sliding surface with the working part. The working part which limits the pump working chambers, wobbles in a positionally fixed... Agent: Ronald E. Greigg Greigg & Greigg P.l.l.c.

20100104463 - Geared hydraulic apparatus: An improved geared hydraulic apparatus, comprising a pair of meshing gearwheels, mounted to be reciprocally rotatable in a casing between an inlet side and an outlet side for a fluid having, in use, a substantially transverse flow with respect to the axes of rotation of the gearwheels. The meshing gearwheels... Agent: Seed Intellectual Property Law Group PLLC

20100104464 - Roots pumps: A Roots vacuum pump stator is arranged to house a pair of intermeshing rotors, said stator being characterised in that it comprises a director or deflector arranged to direct solid material entrained in a gas pumped through the pump towards the outlet. In other words, the stator according to the... Agent: Edwards Vacuum, Inc.

04/22/2010 > patent applications in patent subcategories.

20100098569 - Nanocomposite moineau device: A Moineau device includes a stator that interfaces to a rotor whereby fluid flows through cavities between the stator and rotor that progress axially as the rotor is rotated relative to the stator. At least one of the stator and the rotor is realized from a nanocomposite that includes a... Agent: Schlumberger-doll Research Attn: Intellectual Property Law Department

20100098570 - Variable-speed scroll-type refrigeration compressor: The compressor includes a sealed housing defining a suction volume and a compression volume respectively provided on either side of a body contained in the housing, an oil injection circuit supplied with oil from an oil contained in a casing and adapted for injecting oil into the compression volume, the... Agent: Oliff & Berridge, PLC

20100098571 - Pump apparatus and methods for using same: A pump apparatus for transporting at least one fluid, comprising a shaft, wherein the shaft has a longitudinal axis; a motor, wherein the motor is adapted to rotate the shaft about the longitudinal axis; and, a plurality of gerotors, wherein the gerotors are attached to the shaft along the longitudinal... Agent: Mcdermott, Will & Emery LLP Attn:IPDepartment

20100098572 - High speed gear pump: A gear pump comprises a casing having an inlet, an interior, and an outlet. An inlet gear is positioned at the inlet and pressurizes fluid received at the inlet. A drive gear is positioned at the outlet of the casing, the drive gear receiving fluid pressurized by the inlet gear... Agent: Ogilvy Renault LLP (pwc)

04/15/2010 > patent applications in patent subcategories.

20100092318 - Scroll compressor: Intended is to provide a scroll compressor capable of performing three-dimensional compressions, which can optimize a tip clearance in operation while considering a thermal expansion and a pressure deformation and which can reduce a compression leakage to improve a compression efficiency thereby to realize a high performance. The leading end... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20100092320 - Inlet screen and scroll compressor incorporating same: A suction screen member is provided that bridges the inlet port and entrance port between a compressor housing and a suction duct in a scroll compressor. The suction screen member also serves to screen fluid entering the scroll compressor to prevent particulates from entering the scroll compressor. The suction screen... Agent: Reinhart Boerner Van Deuren P.C.

20100092321 - Scroll compressor and refrigerating machine having the same: A scroll compressor and a refrigerating machine including the same are provided. In the scroll compressor, an oil supply hole formed in an orbiting scroll guides oil from a space between a frame and the orbiting scroll to a space between a fixed scroll and the orbiting scroll, and an... Agent: Ked & Associates, LLP

20100092319 - Suction duct and scroll compressor incorporating same: A scroll compressor and assembly includes a suction duct to direct refrigerant from the housing inlet to a location upstream of a motor. Additionally, the suction duct includes drain ports that act to drain oil received in the suction duct into the oil sump. This can be used for filling... Agent: Reinhart Boerner Van Deuren P.C.

20100092322 - Rotary fluid machinery: A rotary fluid machinery includes a fixed member, a drive shaft driven and rotated about a rotation axis, a movable member, a movable member support part and a reverse moment generating mechanism. The movable member is rotatably mounted at the drive shaft with its center being eccentrically disposed relative to... Agent: GlobalIPCounselors, LLP

20100092323 - Vane type vacuum pump: r

20100092324 - Variable capacity rotary compressor: Provided is a variable capacity rotary compressor, which has a passage for restricting a vane using a pressure applied towards a perpendicular direction to a direction of a motion of the vane. A ratio between a sectional area of the passage and a vane area of the vane facing the... Agent: Mckenna Long & Aldridge LLP

20100092325 - Pneumatic vane motor: A pneumatic vane motor includes a stator with a cylinder, an inlet connectable to a pressure air source and an outlet connectable to an exhaust passage, a rotor journalled in the stator, and an output shaft. The stator has a front opening forming a clearance seal relative to the output... Agent: Frishauf, Holtz, Goodman & Chick, PC

04/08/2010 > patent applications in patent subcategories.

20100086422 - Gear pump: An oil pump includes a drive gear, which rotates with a drive shaft, a driven gear, which meshes with the drive gear and is supported rotatable on a driven shaft, and a casing having a pump chamber, which accommodates the drive gear and the driven gear. The casing of the... Agent: Greenblum & Bernstein, P.L.C

20100086423 - Two-setting variable-eccentricity vane pump: A variable-eccentricity vane pump (1) having a rotor (5) fitted with blades; an adjusting ring (4) housing the rotor (5); elastic means (6) for forcing the adjusting ring (4) into a maximum-eccentricity position with respect to the rotor (5); a first sliding member (12) connected to the adjusting ring (4)... Agent: Pietragallo Gordon Alfano Bosick & Raspanti LLP

20100086424 - Direct control variable displacement vane pump: A lubrication system for a power transmission device includes a variable displacement vane pump including a moveable control ring for varying the displacement of the pump. A linear actuator directly acts on the control ring for moving the control ring between maximum and minimum pump displacement positions. The linear actuator... Agent: Magna International, Inc.

20100086425 - Electroformed stator tube for a progressing cavity apparatus: A method for use in producing a stator for a progressing cavity apparatus which includes the use of electroforming to produce the stator tube. A stator tube for a progressing cavity apparatus which is produced using electroforming and a stator for a progressing cavity apparatus which includes a stator tube... Agent: Schwegman, Lundberg & Woessner, P.A.

20100086426 - Sliding member and fluidic machine utilizing the same: A sliding member has a porous sintered base and a resin composition. The porous sintered base is constructed of a porous sintered compact. The resin composition is coated onto the surface of the porous sintered base. The resin composition has a maximum resin layer thickness equal to a pore depth... Agent: GlobalIPCounselors, LLP

20100086427 - Scroll compressor: In a scroll compressor, a fixed scroll (3) and a movable scroll (5) each having a spiral body are engaged with each other, grooves (13, 14) extending along the spiral shape of the spiral body are formed on the forward end surface of the spiral body of at least either... Agent: Baker Botts LLP C/o Intellectual Property Department

20100086428 - Rotor profile for a screw compressor: A rotor profile for a screw compressor includes a male rotor and a female rotor, which are operated in an operation space while being engaged with each other, wherein a rotor profile of the female rotor includes a curve having an operation contact point located around a pitch circle at... Agent: Nixon Peabody, LLP

04/01/2010 > patent applications in patent subcategories.

20100080721 - Rotary fluid device with multi-level phase shift control: A method for controlling a rotary fluid device includes providing a rotary fluid device having a fluid displacement assembly and a plurality of control valves. The fluid displacement assembly includes a first member and a second member. The first and second members have relative movement and define a plurality of... Agent: Merchant & Gould PC

20100080722 - Scroll compressor: A scroll compressor including a stationary scroll formed with a scroll wrap, an orbiting scroll formed with a scroll wrap, a rotating shaft for putting the orbiting scroll into an orbiting motion, a rotating bearing for rotatably supporting the rotating shaft on the stationary scroll, an orbiting scroll bearing provided... Agent: Birch Stewart Kolasch & Birch

20100080723 - Overmolded rotor: A fluid device includes a housing and a rotor assembly disposed in the housing. The rotor assembly includes a core and a coating. The core has a first surface, an oppositely disposed second surface and an outer peripheral surface that extends between the first and second surfaces. The core defines... Agent: Merchant & Gould PC

20100080724 - Two stage pressure regulation system for variable displacement hydraulic pumps: A pump having a housing with an actuator member positioned inside for controlling the flow generated by the pump. A first decrease port is connected to the housing and has a surface area in operable contact with the actuator member. A second decrease port is connected to the housing and... Agent: Warn, Hoffmann, Miller & Ozga, P.C.

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