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Rotary expansible chamber devices July category listing 07/12

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.
07/26/2012 > 5 patent applications in 4 patent subcategories. category listing

20120189479 - Spherical expansion compressor adapted to variable working conditions: A spherical expansion compressor adapted to variable working conditions with a spherical inner chamber, comprises a rolling rotor compressor used as first-stage compression, compression working chambers, expansion working chambers, a gas tank and a pressure control circuit. The pressure control circuit is arranged between the gas tank and a pressure-controlled... Agent:

20120189478 - Vacuum pump system: A vacuum pump system comprises two vacuum pumps which are connected to each other. In order to create vacuum pump system of a more compact size, the connection between the two vacuum pumps is performed via connection elements directly attached to the pump housing and forming connection sites, and the... Agent: Oerlikon Leybold Vacuum Gmbh

20120189480 - Scroll fluid machine: A scroll fluid machine includes: a casing; a fixed scroll having an end plate, a spiral wrap part provided on the end plate, and a flange provided outside the wrap part and fitted to the casing; and an orbiting scroll having an end plate and a spiral wrap part provided... Agent: Hitachi Industrial Equipment Systems Co., Ltd.

20120189481 - Rotor type pump: A rotor type pump is provided. A rotor rotates and closely contacts an inner surface of a chamber, and a cam controls a sealing part, so that during a compression procedure, the sealing part, a convex surface of the rotor, and an inner surface of the chamber form a substantially... Agent:

20120189482 - Compressor and manufacturing method thereof: The compressor includes a first constituent element and a first slider. The first constituent element is capable of being laser welded. The first slider is composed of cast iron capable of being laser welded and having a carbon content of from 2.0 wt % or more to 2.7 wt %... Agent: Daikin Industries, Ltd.

07/19/2012 > 3 patent applications in 3 patent subcategories. category listing

20120183425 - Valveless vane compressor: A vane compressor has a plurality of vanes that are radially translatable and have outer ends. The vanes create zones between each pair of adjacent vanes, each zone having a given area. The vane compressor also has an axis about which the vanes rotate and an outlet for expelling compressed... Agent:

20120183426 - Variable-displacement lubricant pump: A variable-displacement lubricant pump for providing a pressurized lubricant includes a rotor with at least one radially slidable vane configured to rotate in a shiftable stator ring. A first plunger is configured to push the shiftable stator ring into a high pumping volume direction. A pressure control system is configured... Agent: Pierburg Pump Technology Gmbh

20120183427 - Lube spacer bearing with pressure loading channel: A lube spacer bearing for a lube and scavenge pump includes a bearing body defining a bore with a central axis. The bearing body has a first axial side, a second axial side, an outer radial side, and an inner radial side at the bore. The outer radial side includes... Agent:

07/12/2012 > 9 patent applications in 8 patent subcategories. category listing

20120177518 - Semi-plugged star gerotor and method of assembling the same: A gerotor assembly includes a star, a ring, and an annular plug member, as well as an o-ring. The star member defines a center opening of a first diameter which is connectable to a low-pressure fluid reservoir. The ring member circumscribes the star member. The ring member defines, in conjunction... Agent: Eaton Corporation

20120177519 - Enclosed positive displacement mechanism, particularly for fluid machinery, fluid machinery comprising the mechanism and rotating unit for the mechanism: An enclosed positive displacement mechanism including a body with an inlet and an outlet; a rotor mounted in the body and rotatable about a main axis; an orbiting piston located in the cavity, rotatable about an eccentric secondary axis and arranged to orbit around the main axis to roll on... Agent: Vhit S.p.a.

20120177520 - Reversible gerotor pump: A reversible gerotor pump for a machine having a drive shaft is provided, the pump including a housing, an offset ring, and an inner and outer gear. The offset ring is disposed in the housing and includes a tab extending radially from an outer periphery. The outer periphery of the... Agent: Gm Global Technology Operations LLC

20120177521 - Scroll compressor: A back pressure chamber (63) is formed in a side of a panel (26a) of a movable scroll (26) that is opposite of a side where a lap (26b) is formed. At least one intermediate pressure groove (61) capable of communicating with a compression chamber (40) is formed in a... Agent: Daikin Industries, Ltd.

20120177522 - Scroll compressor having a back pressure adjustment device: A scroll compressor includes a back pressure chamber formed at the rear of a swivel scroll to support the swivel scroll, the swivel scroll swiveling while engaging with a stationary scroll to compress a refrigerant, and a back pressure adjustment device to automatically apply first middle pressure or second middle... Agent: Samsung Electronics Co., Ltd.

20120177523 - Scroll compressor with split type orbitting scroll: A scroll compressor is provided. The scroll compressor may include a case; a fixed scroll installed in the case; a wrap portion configured to form a compression chamber by being engaged with the fixed scroll; a base portion coupled to the wrap portion so as to be movable with the... Agent:

20120177524 - Rotary cylinder device: In the rotary type cylinder device, a first crank shaft is revolved around a shaft and a composite piston assembly is revolved around the first crank shaft in a state where first rotational mass balance relating to first and second piston units around second virtual crank shafts, second rotational mass... Agent:

20120177525 - Pump rotor and internal gear pump using the same:

20120177526 - Air compressor: An air compressor includes a compression mechanism for compressing intake air and discharging the compressed air, and an intake chamber portion through which intake air is introduced into the compression mechanism. The intake chamber portion has an inlet of intake air and an outlet connected to the compression mechanism. The... Agent: Kabushiki Kaisha Toyota Jidoshokki

07/05/2012 > 6 patent applications in 4 patent subcategories. category listing

20120171064 - Compressor: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage of refrigerant.... Agent:

20120171065 - Compressor: A compressor is provided having an accumulator that forms an accumulating chamber in an internal space of a shell of the compressor, reducing a size of the compressor and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent... Agent:

20120171066 - Compressor: A compressor is provided having an accumulator that may form an accumulating chamber at an internal space of a shell, thereby reducing a size of the compressor, and simplifying an assembly process. A stationary shaft having a refrigerant suction passage may be directly connected to the accumulator to prevent leakage... Agent:

20120171067 - Hermetic compressor and manufacturing method thereof: A hermetic compressor is provided, comprising: a cylindrical shell; a stator fixed to inner surface of the shell; a rotor rotatably installed with respect to the stator; a compression unit combined with the rotor to be rotated together with the rotor; a stationary shaft including an eccentric portion around which... Agent:

20120171068 - Displacement pump with internal compression: The invention relates to a dry-compressing dual-shaft rotary displacement screw spindle pump machine for delivering and compressing gases. The spindle rotor pair therein includes multiple stages, having a primary delivery thread, a secondary delivery thread and a gas outlet collector chamber therebetween. The primary delivery thread head circle diameter decreases... Agent:

20120171069 - Screw compressor with a shunt pulsation trap: A shunt pulsation trap for a screw compressor reduces gas pulsation, NVH and improves off-design efficiency without using a traditional serial pulsation dampener and a sliding valve. Generally, a screw compressor with the shunt pulsation trap has a pair of multi-helical-lobe rotors housed in a compressor chamber for propelling gas... Agent:

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