Ball retainer for rotation preventing devices in scroll-type...

F - Mech Eng,Light,Heat,Weapons – 01 – C

Patent

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103/17, 230/37

F01C 1/04 (2006.01) F01C 1/02 (2006.01) F01C 17/06 (2006.01)

Patent

CA 1273326

14 BALL RETAINER FOR ROTATION PREVENTING DEVICES IN SCROLL-TYPE FLUID DISPLACEMENT MACHINES Abstract Of The Disclosure A rotation preventing/thrust bearing device for a scroll type fluid displacement apparatus is disclosed. The rotation preventing/thrust bearing device includes a fixed portion, an orbital portion and balls. The fixed and orbital portions each include an annular race and a ring which covers the end surface of the race. Both rings have a plurality of holes or pockets in an axial direction. The balls are placed between the facing holes in the ring, and are in contact with both races to carry the thrust load from the orbiting scroll member. All balls are rotatably held on a retainer which is disposed in an axial clearance between the facing rings.

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