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Rotary expansible chamber devices October categorized by USPTO classification 10/11

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.
10/27/2011 > 4 patent applications in 4 patent subcategories.

20110262289 - Vane air motor: A vane air motor is disclosed which is configured to prevent grease in a radial bearing from leaking into a rotor chamber. The vane air motor has a motor housing (20) having a rotor chamber, a rotor (22) with vanes (24) disposed in the rotor chamber, a first end wall... Agent:

20110262290 - Screw compressor with asymmetric ports: A multi-rotor screw compressor includes a housing, a sun rotor, and first and second planet rotors. The first planet rotor intermeshes with the sun rotor to define a first compression pair. The second planet rotor intermeshes with the sun rotor to define a second compression pair. The first and second... Agent: Carrier Corporation

20110262291 - Rotor assembly for rotary compressor: A traditional compressor unit of the sealed type suffers in that a failure of either the motor or the compressor require both to be discarded Provided is a compressor (1) having a rotor assembly (3) within which a rotor (24) is rotated on an eccentric shaft (28) in a sealed... Agent: Randell Technologies Inc.

20110262292 - Vane air motor: A vane air motor configured to prevent uneven wear of vanes is provided. The vane air motor has a cylindrical member having a rotor chamber (19) defined by a circular cylindrical inner peripheral surface (11), and a vaned rotor. A plurality of air discharge openings (50) are provided over a... Agent:

10/20/2011 > 6 patent applications in 4 patent subcategories.

20110256007 - Three stage scroll vacuum pump: A three stage vacuum pump has three stages of fixed scrolls and orbiting scrolls that operate simultaneously. A motor drives the second orbiting scroll within the third fixed scroll upon three equally spaced idlers. One idler then transmits rotation and torque into the second stage. The second orbiting scroll to... Agent:

20110256009 - Compressor having capacity modulation system: A compressor includes a housing, a first scroll member, a second scroll member and a modulation assembly. The first scroll member includes a first end plate having a discharge passage, a first spiral wrap, and a first aperture extending through the first end plate. The second scroll member includes a... Agent:

20110256008 - Screw compressor having lubricating oil system: Providing a screw compressor 1 having a lubricating oil system, the compressor being provided with a plurality of radial bearings 5 and a plurality of thrust bearings 6, a rotor shaft 2a or 3a is supported rotation-freely by each bearing, wherein at least one radial bearing 5 or at least... Agent: Mayekawa Mfg. Co., Ltd.

20110256010 - Scroll compressor: A scroll compressor that suffers no decrease in compression performance due to leakage resulting from a twisting assembly error is provided. This scroll compressor includes a fixed scroll and an orbiting scroll, each including a spiral wrap protruding from an end plate and having the same tooth thickness (Tr) and... Agent: Mitsubishi Heavy Industries, Ltd.

20110256011 - Screw compressor: A single screw compressor is arranged to vent the flutes of its main rotor at all times, without having to provide a check valve in the discharge port of the main rotor casing. An additional outlet port in the casing vents gas from the discharge ends of the flutes into... Agent: Aaf Mcquay Incorporated

20110256012 - Positive displacement pump with impeller and method of manufacturing: A rotary positive displacement pump (1) includes an impeller (3) that defines, within a pumping chamber (20), a plurality of successive chambers (21) with variable volume through which a fluid is mechanically conveyed from an inlet (7) to an outlet (8). The chambers (21) with variable volume are defined, at... Agent: Vhit S.p.a.

10/13/2011 > 2 patent applications in 2 patent subcategories.

20110250085 - Compressor having output adjustment assembly: A compressor includes a housing, a first scroll member, a second scroll member and a valve assembly. The first scroll member is positioned within the housing and includes a first end plate portion and a second end plate portion coupled to the first end plate portion and having a first... Agent:

20110250086 - Frame rotated hydraulic motor with improved parking brake: A rotary fluid pressure device includes a gerotor gear set having a ring gear and a star gear orbitally moveable about a longitudinal axis relative to the ring gear. The star gear includes an annular spacer ring disposed at one end of the star gear. A brake pin is moveable... Agent: Eaton Corporation

10/06/2011 > 9 patent applications in 8 patent subcategories.

20110243774 - Undercut stator for a positive displacment motor: A Moineau style stator includes a stator tube having a plurality of rigid helical lobes formed on an inner surface thereof. The helical lobes define a major internal tube diameter that is greater than a pass through diameter of the tube such that the major diameter undercuts the pass through... Agent: Smith International, Inc.

20110243776 - Compressor including anti-rotation washer and method of assembly: A compressor may include a shell, a housing fixed within the shell, first and second scroll members disposed within the shell, a sleeve guide, a fastener, and a washer. The first scroll member may have a first spiral wrap extending from a first end plate and a radially outward extending... Agent:

20110243775 - Scroll compressor: A scroll compressor is provided. A value obtained by multiplying a wrap height (H) by a driving speed (V) may be controlled to be within a range of approximately 500˜1000 mmHz at a low speed driving (less than approximately 35 Hz). The wrap height of the scroll compressor, and the... Agent: Lg Electronics Inc.

20110243777 - Scroll compressor: In a scroll compressor 1, a fixed scroll 16 includes a fixed base plate 16c, and a fixed spiral wrap 16d integral with the fixed base plate 16c, while a movable scroll 22 includes a movable base plate 22a facing to the fixed base plate 16c and a movable spiral... Agent: Kabushiki Kaisha Toyota Jidoshokki

20110243778 - Rotary compressor: According to one embodiment, a rotary compressor includes a compressing unit provided with a cylinder having a flared portion to provide a vane groove. In the compressing unit, a piston revolves along a cylinder inner wall, and an operation chamber is formed between the cylinder inner wall and the piston.... Agent: Fujitsu General Limited

20110243779 - Airtight compressor: An airtight compressor includes a compression mechanism disposed inside an airtight container in a position below a gas retention space. An oil supply passage supplies oil from an oil reservoir both to the gas retention space (14) and to a sliding portion of the compression mechanism in a compression space.... Agent: Daikin Industries, Ltd.

20110243780 - Axial piston machine: The invention relates to an axial piston machine (1), in particular an axial piston pump or axial piston motor, comprising a displacement piston (24, 26) that delimits a displacement chamber (22) and that is displacably mounted in a cylinder bore (20). Said invention is characterised in that two displacement pistons... Agent:

20110243781 - Oilless screw compressor and compressed air cooling unit: An oilless screw compressor incorporating water-cooled cooling units for cooling compressed air discharged from compressor bodies having a pair of male and female screw rotors which can be rotated in a contactless and oilless manner, the cooling units comprising a plate type heat-exchanger, and the amount of cooling water for... Agent:

20110243782 - Soft serve ice cream pump enhancers: The present invention relates to a pump enhancer that allows the pump in the soft ice cream machine to operate at maximum capacity. The preferred pump enhancer is made of NSF approved Virgin Teflon film and is used in a two-gear pump soft ice cream machines to take up the... Agent:

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