U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 418/55.5 - With biasing means, e.g., axial or radial


Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus in which a means is provided to keep the scrolls
No. of patents: 486
Last issue date: 05/22/2012


1                      
NumberTitleIssue Date
8182249Sealed type scroll compressor
There is disclosed a sealed type scroll compressor which decreases a sliding loss between a thrust ring and a orbit scroll and improves the efficiency of the sealed type scroll compressor while preventing the leakage of a refrigerant between a fixed scroll and the o...
05/22/2012
8167594Scroll compressor with materials to allow run-in
A scroll compressor comprises a non-orbiting scroll member having a base and a generally spiral wrap extending from its base, and an orbiting scroll member having a base and a generally spiral wrap extending from its base. The wraps of the non-orbiting and orbiting ...
05/01/2012
8157551Scroll compressor with back pressure pocket receiving discharge pressure fluid
A face of a base of an orbiting scroll member is aligned with a thrust bearing. The thrust bearing includes a back pressure pocket and a seal for sealing the back pressure pocket to entrap a compressed fluid. There is a tap for tapping fluid at a discharge pressure ...
04/17/2012
8152502Scroll compressor having guide ring supporting and urging seal member
A scroll compressor includes a fixed scroll, an orbiting scroll, a crankshaft rotationally supported on a frame to drive the orbiting scroll, a seal member between an orbiting scroll back surface and the frame, a back pressure chamber of discharge pressure at an inn...
04/10/2012
8152503Baffle member for scroll compressors
A baffle member for use in scroll compressors. In one exemplary embodiment, the baffle member is attached to a portion of the crankcase and, in use, deflects lubricant that may be thrown from the thrust surface of the crankcase during operation of the compressor awa...
04/10/2012
8075291Scroll compressor improved in function of oil circulation and back pressure control
Provided is a scroll compressor having an improved function of oil circulation and back pressure control. The scroll compressor includes: a housing; a drive part for generating a rotational force; a drive shaft driven by the drive part; and a scroll compression part...
12/13/2011
8047823Scroll-type fluid machine including pressure-receiving piece
A scroll-type fluid machine has a movable scroll (50) that forms pressure chambers (52) in between the movable scroll (50) and a fixed scroll (40) and is orbitable relative to the fixed scroll (40), a support wall (14) that ...
11/01/2011
8029254Scroll-type fluid machine having a back-pressure chamber
Provided is scroll-type fluid machine that facilitates the formation of a back-pressure chamber so as to increase the design freedom in the space on the back side of the revolving scroll member, where it is difficult to ensure sufficient space, by decreasing, as muc...
10/04/2011
8007262Compressor with thrust bearing having insular pressure- receiving portions on sliding surface and diamond-like carbon layer on another sliding surface
A scroll compressor (11) comprising a thrust bearing (53) including a first sliding surface (100) and a second sliding surface (101) in opposed relation to the first sliding surface (100) is disclosed. The first sliding surface (
08/30/2011
8007261Thermally 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 me...
08/30/2011
7988433Compressor having capacity modulation assembly
A compressor may include a shell assembly defining suction and discharge pressure regions, first and second scroll members disposed within the shell assembly, and a capacity modulation assembly. The first scroll member may include a first end plate defining a discha...
08/02/2011
7988434Compressor having capacity modulation system
A compressor may include a housing and first and second scroll members supported within the housing, each having an end plate with a spiral wrap extending therefrom and meshingly engaged with the other to form a series of compression pockets operating at an intermed...
08/02/2011
7976295Compressor having capacity modulation system
A compressor includes a housing, a first scroll member supported within the housing and having a first end plate with a discharge passage, and a second scroll member supported within the housing and having a second end plate with a second spiral wrap extending there...
07/12/2011
7976296Scroll compressor having capacity modulation system
A compressor may include a housing, orbiting and non-orbiting scroll members, a first porting, and a second porting. The first and second porting may each extend through the end plate of the non-orbiting scroll member and may each have an angular extent of at least ...
07/12/2011
7972125Compressor having output adjustment assembly including piston actuation
A compressor may include a housing, first and second scroll members, and a compressor output adjustment assembly. The first scroll member may define a first chamber having first and second passages in communication therewith, a second chamber having third and fourth...
07/05/2011
7878777Scroll compressor having grooved thrust bearing
A scroll compressor is disclosed. A plurality of grooves (85) communicating with each other are formed on a sliding surface of a thrust bearing (53) subjected to the axial force received by a movable scroll (32). The areas surrounded by the plur...
02/01/2011
7878776Thermally 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 me...
02/01/2011
7837452Scroll compressor including deflection compensation for non-orbiting scroll
A scroll compressor an orbiting scroll member including a second end plate, a second wrap extending from the second end plate and meshingly engaged with the first wrap to form a suction pocket in fluid communication with a suction pressure region of the compressor, ...
11/23/2010
7758326Scroll fluid machine
A scroll fluid machine comprises compression chambers defined with an orbiting scroll orbiting relative to a fixed scroll, and a back pressure chamber provided on the face opposite from a wrap of the orbiting scroll. A back pressure port is provided, which is formed...
07/20/2010
7717687Scroll compressor with compliant retainer
A scroll compressor may include a shell, a bearing housing, first and second scroll members, and a ring member. The bearing housing may be supported within the shell and may include at least three axially extending arms. The first scroll member may be supported on t...
05/18/2010
7699589Scroll type fluid machine having a circulation path and inlet path for guiding refrigerant from a discharge chamber to a drive casing and to a rear-side of movable scroll
In a scroll-type fluid machine (4), a refrigerant in a discharge chamber (80) is adjusted at prescribed discharge pressure by using a discharge valve (84), discharged from a scroll unit (52), and supplied to a refrigeration circuit (2
04/20/2010
7695257Apparatus for preventing vacuum of scroll compressor
An apparatus for preventing vacuum of a scroll compressor is provided. The apparatus includes a fixed scroll having a bypass hole, through which a suction chamber of a casing is connected to a discharge chamber of the casing; a valve block having an inner channel, t...
04/13/2010
7641456Scroll compressor with back pressure chamber cavity for assisting in start-up
A scroll compressor is provided with a cavity in its back pressure chamber to increase a volume of the back pressure chamber. In this manner, at start-up, the back pressure chamber will not be effective to bias the two scroll members together until this enlarged vol...
01/05/2010
7611345Structure for preventing axial leakage in scroll 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 ...
11/03/2009
7611344Sealing tabs on orbiting scroll
An improved sealing mechanism for a positive fluid displacement apparatus, where sealing tabs are located on the orbiting scroll. The sealing tabs can be integrally formed with the orbiting scroll or disposed on a piston that is mounted on the orbiting scroll. ...
11/03/2009
7568897Scroll 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 mechanis...
08/04/2009
7553140Flanged sleeve guide
A scroll machine includes a shell and a pair of scroll members. At least one of the scroll members disposed in the shell is mounted for axial movement with respect to the other scroll member disposed in the scroll. The amount of axial movement of at least one scroll...
06/30/2009
7547202Scroll compressor with capacity modulation
A scroll compressor may include a shell, a compression mechanism, and a sealing apparatus. The compression mechanism may be contained within the shell and include a compression member. The compression member may include an aperture extending radially there a surface...
06/16/2009
7491045Scroll compressor having a position adjustment device urging the stationary scroll towards the movable scroll by moving a seal formed between a support and the stationary scroll
A scroll compressor has a moving scroll and a stationary scroll in contact with each other. A seal ring for defining a back pressure space at a rear side of the stationary scroll is provided and its position is adjusted between a sealing position and a leakage posit...
02/17/2009
7476092Scroll compressor with tapered slider block
The drive connection between an eccentric pin and a slider block in a scroll compressor is angled such that any vertical force between the two will drive the slider block away from the orbiting scroll member. In this manner, manufacturing tolerances will not result ...
01/13/2009
7458788Scroll fluid machine including back-pressure chamber with increased pressure receiving area
A scroll fluid machine is capable of readily providing a back-pressure chamber having an increased pressure-receiving area and yet capable of being reduced in size. A fixed scroll member is secured to a casing. An orbiting scroll member is provided at a position fac...
12/02/2008
7442017Displacement type compressor having a self-start synchronous motor and start load reducing means
In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high energy efficiency, the displacement type compressor according to the i...
10/28/2008
RE40554Capacity modulated scroll machine having one or more pin members movably disposed for restricting the radius of the orbiting scroll member
A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scro...
10/28/2008
7435067Scroll machine with brushless permanent magnet motor
A scroll machine is powered by a brushless permanent magnet motor. The rotor for the motor includes a rotor body formed by a plurality of laminations and an upper and lower counterweight made of zinc and located at opposite ends of the rotor body. An attachment memb...
10/14/2008
7419370Scroll compressor having a position adjustment device urging the movable scroll towards the stationary scroll by moving a seal formed between a support and the movable scroll
A scroll compressor has a moving scroll and a stationary scroll in contact with each other. A seal ring for defining a back pressure space at a rear side of the moving scroll is provided and its position is adjusted between a sealing position and a leakage position ...
09/02/2008
RE40400Capacity modulated scroll machine
A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scro...
06/24/2008
7384250Oil discharge preventing apparatus of scroll compressor
An oil discharge preventing apparatus of a scroll compressor comprises: a balance weight coupled to a rotor of a driving motor so as to offset an unbalance generated when an orbiting scroll performs an orbiting motion by receiving a rotation force of the driving mot...
06/10/2008
7381037Apparatus for varying capacity of scroll compressor
An apparatus for varying the capacity of a scroll compressor is disclosed. The apparatus for varying the capacity of a scroll compressor includes a bypass passage for connecting a compression pocket under intermediate pressure among compression pockets formed by a w...
06/03/2008
7371059Scroll compressor with discharge valve
A scroll compressor utilizes scroll wrap profiles which are designed with a rapid compression scroll wrap profile. This profile utilizes a shorter wrap and lower vane aspect ratios during the compression process. The non-orbiting scroll member is integrated with the...
05/13/2008
7363696Method of assembling a sealed type motor-driven compressor
A sealed type motor-driven compressor includes a cylindrical motor housing and an annular stator core fastened to the interior of the motor housing. A method of assembling the compressor includes fastening the stator core to the motor housing by mechanically deformi...
04/29/2008
1                      
 
Sign InRegister
Username  
Password   
forgot password?