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Rotary expansible chamber devices February patent applications/inventions, industry category 02/13

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.
02/28/2013 > 7 patent applications in 6 patent subcategories.

20130052067 - Downhole motors and pumps with improved stators and methods of making and using same: In one aspect, the disclosure provides an apparatus for use downhole that in one configuration includes a stator including a housing having an inner contour and a liner lining the inner contour of the stator housing, wherein thickness of the liner is non-equidistant around the inner contour of the housing.... Agent: Baker Hughes Incorporated

20130052068 - Scroll compressor: A scroll compressor including a casing, a scroll compression mechanism that compresses refrigerant, a driving motor that has a driving shaft, an insulator and a stator, and is connected to the scroll compression mechanism through the driving shaft to drive the scroll compression mechanism, a main frame that supports the... Agent: Sanyo Electric Co., Ltd.

20130052069 - Scroll compressor: A scroll compressor including a casing, a scroll compression mechanism that compresses refrigerant, a driving motor that has a driving shaft and is connected to the scroll compression mechanism through the driving shaft to drive the scroll compression mechanism, a main frame that supports the scroll compression mechanism in the... Agent: Sanyo Electric Co., Ltd.

20130052070 - Oscillating slide machine: A controllable hydraulic oscillating slide machine includes an inner rotor arranged in a housing and having cylindrical recesses. A bearing is formed in the housing, in which a co-rotating outer rotor is mounted eccentrically to the inner rotor, the outer rotor having several pivotably suspended slide drivers that engage into... Agent:

20130052071 - Vane pump: A back pressure groove which is formed in a plate coming into contact with a side surface of a rotor and is communicated with a high pressure chamber is formed in such a manner as to copy an annular locus drawn by a base end of a vane which slides... Agent: Showa Corporation

20130052072 - Lubrication of screw machines: A screw machine for use with a working fluid with a liquid phase present comprises rotors having meshed, lubricated helical formations. The rotors have an ‘N’ profile as disclosed in WO 97/43550. In use, lubrication of the helical formations of the rotors and optionally of the rotor bearings is achieved... Agent: The City University

20130052073 - Vane pump: In a vane pump, when discharge pressures of respective discharge ports are different from each other, an extension length A of a notch groove which is provided in the discharge port in a side of a high discharge pressure is set longer than an extension length B of a notch... Agent: Showa Corporation

02/21/2013 > 3 patent applications in 3 patent subcategories.

20130045124 - Revolving vane expander: An example revolving vane expander includes a cylinder. A rotor is housed within the cylinder to establish a working chamber between the cylinder and the rotor. The rotor is eccentrically mounted relative to the cylinder. A vane is secured to the cylinder or the rotor. The vane is slidably receivable... Agent:

20130045125 - Fluid energy transfer device: A trochoidal gear pump or engine uses a coaxial hub with an outer and/or inner rotor and an associated rolling element bearing assembly that uses pre-loaded bearings to precisely set the rotational axis and/or the axial position of the rotor with which it is associated. This allows the fixed-gap clearance... Agent: Ener-g-rotors ,inc.

20130045126 - Tapered sound outlet vane pump: The invention relates to a vane cell pump comprising an electrical pump unit that has a pump chamber into and out of which a fluid can flow and also a rotor with a number of vanes to compress the fluid before flowing out from the pump chamber. The vane cell... Agent: Hella Kgaa

02/14/2013 > 6 patent applications in 6 patent subcategories.

20130039790 - Variable displacement lubricant pump: A variable displacement lubricant pump includes a first plunger which pushes a shiftable control ring into a high pumping volume direction. A pump rotor comprises radially slidable vanes which rotate in the control ring. A pressure control system comprises a first pressure control chamber wherein a first plunger is axially... Agent: Pierburg Pump Technology Gmbh

20130039791 - Scroll pump: The present invention relates to a scroll pump (10) comprising a pump housing (12), a drive shaft having a concentric shaft portion (14) and an eccentric shaft portion (16) connected to an orbiting scroll (20). The shaft is arranged to be driven by a motor (18) so that during use... Agent: Edwards Limited

20130039792 - Compressor: According to a compressor of the present invention, the compressor further comprises an oil separating mechanism 40 which separates oil from the refrigerant gas discharged from the compressing mechanism 10, the oil separating mechanism 40 includes a cylindrical space 41 in which the refrigerant gas orbits, an inflow portion 42... Agent: Panasonic Corporation

20130039793 - Reduced noise fluid pump: A fluid pump includes a housing that defines a suction chamber, a discharge chamber, and a barrier having a first height, wherein the barrier is configured to separate the suction chamber from the discharge chamber. The pump also includes meshed first and second gears rotatably disposed in the housing. The... Agent: Gm Global Technology Operations LLC

20130039794 - Gear pump with continuous variable output flow rate: Gear pump with continuous variable output flow rate, comprises at least one first gear (3) is mounted on the first shaft (1), at least one second gear (4) is mounted on the second shaft (2), the first gear (3) and the second gear (4) are arranged axially movably against each... Agent:

20130039795 - Shaft rotating double-stator multi-speed motor with curves of constant width: The present invention discloses a shaft rotating constant-width curve double-stator multi-speed motor, comprising a rotor (5), an inner stator (19), an outer stator (3), sets of sliders (22) mounted on the rotor, a left end cover (6) and a right end cover (1), a curve of an external surface of... Agent: Yan University

02/07/2013 > 4 patent applications in 4 patent subcategories.

20130034460 - Variable displacement vane pump: A variable displacement vane pump has an inner peripheral face of a cam ring formed so that in a maximum eccentric state, a radius vector gradually shortens according to the rotation of a rotor in an area from a starting point of a first seal interval to an intermediate point... Agent: Hitachi Automotive Systems, Ltd.

20130034461 - Compressor: A compressor has auxiliary and main oil reservoir chambers that retain lubricant oil that is separated from refrigerant in an oil separation chamber. A part of the auxiliary oil reservoir chamber is defined by a peripheral wall of the oil separation chamber. An introducing passage for introducing lubricant oil in... Agent: Kabushiki Kaisha Toyota Jidoshokki

20130034462 - Fluid energy transfer device: A rotary chambered fluid energy-transfer device includes a housing with a central portion having a bore formed therein and an end plate forming an arcuate inlet passage, with a radial height and a circumferential extent. The device also includes an outer rotor rotatable in the central portion bore with a... Agent:

20130034463 - Gear pump: A gear pump includes a plurality of gear wheels rotatably retained in a pump housing and that engage in one another for the conveyance of a medium. One of the gear wheels is driven by a pump shaft, which can be coupled to a drive by means of a coupling... Agent: Oerlikon Textile Gmbh & Co., Kg

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