Rotary expansible chamber devices inventions 07/08

20080181801 - Powder metal scroll hub joint: A scroll component including a spiral scroll wrap, a baseplate having a first major surface coupled to the scroll wrap and a second opposing major surface comprising a protruding pilot extending a distance from the baseplate, and a hub fastened to the baseplate adjacent to the protruding pilot. A method... Agent: Harness, Dickey & Pierce, P.L.C

20080181802 - Scroll fluid machine: A scroll fluid machine that is capable of preventing a power loss and enhancing the degree of hermeticity of compression chambers. A plurality of outer peripheral projections are formed on an outer peripheral surface of a wrap portion of each scroll. An outer peripheral coating layer is formed on an... Agent: Wenderoth, Lind & Ponack, L.L.P.

20080181804 - Drive transmission mechanism between two or more rotary shafts and oil-free fluid machine equipped with the mechanism: A drive transmission mechanism for transmitting torque between two or more rotary shafts in synchronization with one another without need for lubrication thereby eliminating occurrence of oil contamination, and an oil-free fluid machine equipped with the mechanism, are provided. A magnetic drive disk 16 and a synchronization gear 18 are... Agent: Rossi, Kimms & Mcdowell LLP.

20080181803 - Reflux gas compressor: A positive displacement, transverse flow, internally refluxing, rotary gas compressor which operates on a constant volume, variable mass, near-isothermal compression cycle. The compressor includes a pair of involutely lobed, intermeshed impellers that sweep gas from an intake port through the compressor housing to a discharge port in constant volume displacement... Agent: William A. Eklund

20080175736 - Variable capacity rotary compressor: A variable capacity rotary compressor capable of reducing collision noise of a vane with a roller. The variable capacity rotary compressor includes a vane controller controlling the operation of a vane in order to vary compression capacity. The vane controller includes a control valve that switches a fluid channel so... Agent: Staas & Halsey LLP

20080175737 - Scroll machine with seal: A compressor may include a housing, a compression mechanism supported within the housing, and a seal assembly. The housing may include a suction pressure region and a first discharge passage in communication with a discharge pressure region. The compression mechanism may include a second discharge passage in communication with the... Agent: Harness, Dickey & Pierce, P.L.C

20080175738 - Compressor and oil blocking device therefor: A compressor and oil blocking device therefor are provided which are capable of preventing oil from spreading onto, for example, a balance weight, which are capable of preventing oil from being excessively sucked into a compression device by a separating device disposed between a driving motor and the compression device,... Agent: Ked & Associates, LLP

20080175739 - Supercharger with heat insulated gear case: A positive displacement supercharger includes a housing having a rotor cavity. A pair of positive displacement rotors are oppositely rotatable in the rotor cavity and have interleaved helical lobes forming rotor chambers operative to carry air axially from an inlet end to an outlet end of the cavity. A gear... Agent: General Motors Corporation Legal Staff

20080170955 - Scroll compressor with crankshaft venting: Lubrication of bearing surfaces in a scroll compressor is enhanced by a vent arrangement which makes use of increased centrifugal force, achieved by locating the outlet of the vent arrangement radially outside of the nominal circumference of the compressor's drive shaft, to both remove refrigerant gas from compressor locations where... Agent: William O'driscoll - 12-1 Trane

20080170956 - Fluid compressing system: A fluid compressing system includes: a rotary compressor including a housing defining an oil chamber and an oil-releasing port in fluid communication with the oil chamber; a discharging pipeline connected to the housing for passage of a high pressurized fluid therethrough; an oil-adjusting tank connected to the discharging pipeline and... Agent: Curatolo Sidoti Co., Lpa

20080170957 - Compressor and oil separating device therefor: A compressor and an oil separating device therefor are provided which are capable of always maintaining a predetermined amount of oil in the compressor without additionally providing an oil separating device along a refrigerating cycle system. This results in the refrigerating cycle system having simplified piping and the refrigerant discharged... Agent: Ked & Associates, LLP

20080170958 - Rotor assembly and method of forming: A rotor assembly for a supercharger is provided having a first rotor section and at least one other rotor section affixed to the first rotor section. The first rotor section and the at least one other rotor section are formed from powdered metal and are substantially similar in shape. Each... Agent: General Motors Corporation Legal Staff

20080166251 - Variable capacity gerotor pump: A variable capacity gerotor pump includes an inner rotor that is axially displaceable with respect to the outer rotor to vary the volumetric capacity of the pump. An active piston abuts the lower surface of the inner rotor and can ride inside the outer rotor, as the inner rotor is... Agent: Magna International, Inc.

20080166252 - Compressor with discharge muffler: A muffler that is externally mounted to a housing shell of a compressor. To externally mount the muffler to the housing shell and prevent unnecessary vibration of the muffler during compressor operation, an attachment device connects an essentially central portion of the muffler to the housing shell. The attachment device... Agent: Harness Dickey And Pierce, PLC

20080166253 - Oilless screw compressor: 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: Antonelli, Terry, Stout & Kraus, LLP

20080166254 - Hydraulic device: A hydraulic device has an inlet side and an outlet side and includes two meshing cogwheels. Each cogwheel has external oblique teeth and is arranged between an inlet side and an outlet side. At least one control groove is provided on an end side of the cogwheels. The control groove... Agent: Macmillan, Sobanski & Todd, LLC

20080159892 - Scroll type compressor: A scroll type compressor is disclosed. The scroll type compressor includes a housing, a frame, a compartment, a separator, a scroll pairs, a slider, a plurality of compartments, at least a pressure-regulating mechanism, and a guiding element. The compartment in the housing is separated into a high-pressure compartment, a low-pressure... Agent: Quintero Law Office, Pc

20080159894 - Scroll fluid machine: A plurality of proximate portions 8 are formed, at spacings in a spiral direction, on an outer peripheral surface 3B of a wrap portion 3 of a fixed scroll 1. Flat surfaces 8A are used to connect adjacent proximate portions 8. Similarly, a plurality of proximate portions 14 are formed,... Agent: Wenderoth, Lind & Ponack, L.l.p.

20080159893 - Thermally compensated scroll machine: The scroll machine has a first and a second scroll member each having intermeshed scroll wraps. A compensation member is attached to one of the scrolls. As the scroll machine warms to operating temperature, the compensation member exerts a force on the one scroll member causing it to deflect. The... Agent: Harness, Dickey & Pierce, P.L.C

20080159895 - Sealing structure and packing element thereof: A sealing structure includes a first substrate having a first compartment, a second compartment and a first base surface. A first element, disposed between the first and second compartments, a second element and a third element, moves between a first initial position and a first predetermined position. The first element... Agent: Quintero Law Office, Pc

20080159896 - Vane pump: s

20080159897 - Reciprocating component-free kinematic motion apparatus for transforming pressure variations of a fluid operating in cyclically variable volume toroidal chambers into a mechanical work on a rotary axis and engine including said apparatus:

20080159898 - Vane pump: A vane pump that is provided with, inside a case, a cam ring, a rotor that is disposed inside this cam ring so as to be freely rotatable, a plurality of vanes that is accommodated in each of a plurality of vane grooves that is radially formed in this rotor... Agent: Kenyon & Kenyon LLP