Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5330334 | Compact Oldham coupling A pair of keys of an Oldham coupling are located on a chord spaced from a diameter and are of a parallelogram shape. The ends of the corresponding slots are located at the same radius whereby a reduced envelope results.... | 07/19/1994 |
| 5328341 | Synchronizer assembly for a scroll fluid device A scroll fluid device includes a synchronizer having a plurality of first synchronizer elements, fixedly secured to or integrally formed along a flank portion of one of a pair of meshed wraps, which are interdigited with a plurality of second synchronizer... | 07/12/1994 |
| 5320506 | Oldham coupling for scroll compressor A scroll-type machine is disclosed which incorporates a unique Oldham coupling for preventing relative rotation between the two scroll members while allowing relative orbital motion therebetween. The Oldham coupling is positioned below the end plate of th... | 06/14/1994 |
| 5295808 | Synchronous rotating type scroll fluid machine A synchronous rotating type scroll fluid machine has a first scroll member driven by a shaft of a first motor and having an end plate and a scroll wrap protruding from a surface of the scroll end plate, and a second scroll member driven by a shaft of a se... | 03/22/1994 |
| 5281114 | Dynamically balanced co-orbiting scrolls Co-orbiting scroll members are maintained in a fixed angular relationship. An anti-rotation structure limits one of the scroll members to orbiting motion with respect to the separator plate. In a first embodiment the scroll members coact with a common ant... | 01/25/1994 |
| 5275543 | Oldham ring of scroll type compressor An Oldham ring of a scroll type compressor having a swivel scroll of aluminum alloy. The Oldham ring is of cast aluminum alloy and has a pair of projections (a) serving to engage with a pair of guide grooves formed in a surface of the swivel scroll adjace... | 01/04/1994 |
| 5258046 | Scroll-type fluid machinery with seals for the discharge port and wraps The present invention is intended to provide an oilless scroll-type compressor which can obtain a high compression efficiency with highly accurate sealability retained and particularly has such a constitution that a chip seal fitted in each of the wrap en... | 11/02/1993 |
| 5256042 | Bearing and lubrication system for a scroll fluid device A bearing and lubrication system for a sealed, integrated motor driven co-rotating scroll refrigerant compressor includes hydrostatic bearings and an independent motor driven lubricant supply pump for supplying lubricant to the hydrostatic bearings mounti... | 10/26/1993 |
| 5253989 | Scroll fluid apparatus having a revolving scroll of separate members A scroll fluid apparatus has a revolving scroll and an auxiliary crank as a rotation prevention mechanism. The revolving scroll has a two-layer structure including an auxiliary member having an annular plate portion, and an end plate member having an end ... | 10/19/1993 |
| 5247795 | Scroll expander driven compressor assembly An expander driven compressor assembly is disclosed comprising a scroll-type expander having at least one pair of meshed axially extending involute spiral wraps wherein one of the wraps orbits relative to the other wrap and a scroll-type compressor having... | 09/28/1993 |
| 5242282 | Scroll compressor with a driving pin between scrolls and a sliding shaft bearing A scroll compressor incorporates an electric motor unit and a scroll compressor unit in a sealed container. The scroll compressor unit has a frame having a bearing at the center thereof, a first scroll driven by the electric motor unit having an end plate... | 09/07/1993 |
| 5242284 | Scroll compressor having limited axial movement between rotating scroll members A scroll compressor has a first scroll member and a second scroll member rotated in the same direction as the first scroll member. A limit plate is provided to limit an axial movement of one of the scroll members with respect to the other. A pressure cham... | 09/07/1993 |
| 5221198 | Scroll type compressor with intake port aligned with counterweight A scroll type compressor comprising a stationary scroll member (2) and a movable scroll member (4) accommodated in a housing (10, 39), the scroll members (2, 4) being engaged with each other so that the movable scroll member (4) is subjected to an orbital... | 06/22/1993 |
| 5211550 | Scroll type fluid compressing apparatus with a thrust ring plate having flat and parallel circumferential opposite surfaces extending over an oldham ring A thrust ring plate of a scroll type compressing apparatus supports the movable scroll member of the apparatus and has flat and parallel circumferential opposite surfaces extending over an Oldham ring in the bearing frame to bear a thrust pressure occurre... | 05/18/1993 |
| 5199280 | Co-rotational scroll compressor supercharger device In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-concentric axes, a precharging device affixed to one end plate and substantially enclosing the scroll wraps and the second end plat... | 04/06/1993 |
| 5188521 | Scroll compressor with reduced vibration resulting from the Oldham's ring A balance weight to equilibrate an inertial force due to reciprocation of an Oldham's ring is mounted so that a vibration due to an unbalanced inertial force of the Oldham's ring is transmitted in a direction perpendicular to or almost perpendicular to a ... | 02/23/1993 |
| 5180295 | Scroll compressor Oldham coupling having anti-friction means A scroll compressor 10 includes a housing 12, a fixed scroll 26, an orbital scroll 48, a scroll drive assembly 74 and an axial thrust and anti-rotation assembly 108. The axial thrust and anti-rotation assembly includes a pair of scroll key ways 110 and 11... | 01/19/1993 |
| 5178526 | Coupling mechanism for co-orbiting scroll members Co-orbiting scroll members are maintained in a fixed angular relationship. Each of the scroll members coacts with anti-rotation structure. The scroll members orbit in orbits of different radii.... | 01/12/1993 |
| 5167494 | Scroll type compressor with axially supported movable scroll A scroll type compressor having movable and fixed scrolls forming a working chamber with a movable scroll supporting arrangement to prevent tilting of the movable scroll into the fixed scroll thereby making it possible to extend the axial length of the sc... | 12/01/1992 |
| 5165878 | Scroll type compressor with slide guide for preventing rotation of the moveable scroll A multiple-turn scroll compressor has a first scroll member and a second scroll member. Each of the scroll members has a scroll blade which is engaged with the other. A shaft has an eccentric portion which supports the first scroll member. A cylindrical g... | 11/24/1992 |
| 5154591 | Displacement machine employing a plurality of intermeshing spiral displacement bodies A displacement machine for compressible media includes a stationary housing, and a plurality of disks mounted for eccentric movement within the housing. Each of the disks has two symmetrically disposed spiral displacement bodies that are offset from one a... | 10/13/1992 |
| 5154592 | Scroll type fluid apparatus with rotation restraining mechanism A scroll type fluid apparatus, such as a scroll vacuum pump or a scroll compressor, does not require lubrication by an external lubricating device. The scroll type fluid apparatus includes a casing, a stationary scroll member fixed to the casing, an orbit... | 10/13/1992 |
| 5149255 | Gearing system having interdigital concave-convex teeth formed as invalutes or multi-faceted polygons A gearing system includes a pair of gear support plates (5,10) arranged to rotate about parallel but offset axes (9,14) with the plates extending parallel to each other in parallel radially extending planes. Each plate includes axially extending teeth (40... | 09/22/1992 |
| 5147192 | Scroll-type fluid compressor with rotation preventing coupling members A scroll-type compressor having a unique coupling arrangement for driving the movable scroll is provided. The side of the base portion of the movable scroll opposite the spirals has a plurality of recesses disposed in a circular pattern. A support plate h... | 09/15/1992 |
| 5145344 | Scroll-type fluid machinery with offset passage to the exhaust port A scroll-type fluid machine has an orbiting scroll with involute wraps projecting axially on each of opposite sides, a pair of stationary scrolls each with involute wraps which mate with the wraps of the orbiting scroll, and a main shaft inserted in a cen... | 09/08/1992 |
| 5141421 | Nested coupling mechanism for scroll machines Co-orbiting scroll members are maintained in a fixed angular relationship. Each of the scroll members coacts with a common anti-rotation structure which controls orbiting motion between the scroll member. A second anti-rotation structure limits one of the... | 08/25/1992 |
| 5141422 | Scroll-type compressor having cooling and lubrication holes to various mechanisms A scroll-type compressor has a ring-shaped protruding portion of a front case is fitted into an opening end of a case body so as to construct a housing, a stationary scroll and a revolving scroll which are engaged with each other when they are disposed in... | 08/25/1992 |
| 5141417 | Method for dynamically balancing nested coupling mechanisms for scroll machines Co-orbiting scroll members are maintained in a fixed angular relationship. Each of the scroll members coacts with a common anti-rotation structure which controls orbiting motion between the scroll member. A second anti-rotation structure limits one of the... | 08/25/1992 |
| 5137437 | Scroll compressor with improved bearing A scroll compressor has an orbiting scroll which operatively meshes with a stationary scroll to define compression chambers therebetween. This orbiting scroll is driven by an electric motor through a crank-shaft, and makes an orbiting movement while being... | 08/11/1992 |
| 5131828 | Scroll compressor including compliance mechanism for the orbiting scroll member A hermetic scroll-type compressor including a housing, fixed and orbiting scroll members, a frame member having a thrust surface adjacent the orbiting scroll member back surface, and a crankshaft coupled to the orbiting scroll member. A seal between the t... | 07/21/1992 |
| 5125805 | Fluid compressor The Oldam-ring of the rotational force transmitting mechanism of a fluid compressor is engaged with the rectangular section formed on the base portion of the main shaft of the rotary rod in the direction perpendicular to the axial direction of the main sh... | 06/30/1992 |
| 5125810 | Scroll compressor with a stationary and orbiting member of different material A scroll compressor having an orbiting scroll member, a stationary scroll member and an Oldham's ring. The stationary scroll member is made of a material having a higher rigidity than the material forming the orbiting scroll member, and a higher density a... | 06/30/1992 |
| 5123818 | Rolling rotor motor driven scroll compressor The orbiting scroll element of a scroll compressor is integral with the rotor of an internal stator rolling rotor motor. Anti-rotation means are provided to limit the rotor and orbiting scroll to orbiting motion.... | 06/23/1992 |
| 5102315 | Orbiting member fluid displacement apparatus with rotation preventing mechanism The present invention discloses a durable rotation preventing/thrust bearing device for use in an orbiting member fluid displacement apparatus. The rotation preventing/thrust bearing device includes a discrete fixed portion, a discrete orbital portion and... | 04/07/1992 |
| 5099658 | Co-rotational scroll apparatus with optimized coupling In a co-rotational scroll apparatus having two interleaving scroll wraps secured to end plates rotating about parallel, non-concentric axes to produce a relative orbital motion, a coupling for causing concurrent rotation and for enhancing the nutational s... | 03/31/1992 |
| 5098265 | Oil-free scroll fluid machine with projecting orbiting bearing boss An oil-free scroll fluid machine having a stationary scroll member, an orbiting scroll member opposing the stationary scroll member, an orbiting bearing boss provided on the orbiting scroll member and receiving an orbiting bearing, and a drive shaft drivi... | 03/24/1992 |
| 5094205 | Scroll-type engine A scroll-type engine includes an orbiting member situated inside the interior volume of the engine to define a compression chamber and an expansion chamber. The orbiting member includes an aperture for transferring an air and fuel mixture from the compres... | 03/10/1992 |
| 5090876 | Scroll type fluid handling machine Here is disclosed a full system rotatable scroll type fluid handling machine having a casing containing therein an electromotor, a driver scroll member and a follower scroll member, these two scroll members being rotatably driven by said electromotor to p... | 02/25/1992 |
| 5080566 | Fluid scroll machine with projection on one side of Oldham ring A fluid scroll machine comprises a fluid mechanism including first and second spiral blades located in a frame to eccentrically rotate and a compression chamber defined by the spiral blades, and an Oldham's coupling movably supported by the frame and incl... | 01/14/1992 |
| 5071329 | Scroll type fluid transferring machine with thermoplastic Oldham ring A scroll type fluid transferring machine comprises a stationary scroll having a wrap member, a movable scroll having a wrap member combined with the stationary scroll, a driving means for causing the movement of revolution of the movable scroll along a ci... | 12/10/1991 |
