Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1990-09-18
1992-04-07
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
464103, F01C 104, F01C 2102, F16D 304
Patent
active
051023156
ABSTRACT:
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 bearing elements. The fixed portion includes a first race and first ring both of which are formed separately. The first race is placed in a first groove in an inner surface of the housing and the first ring is attached to the housing. The orbital portion includes a second race and second ring both of which are formed separately. The second race is placed in a second groove in an end plate of the orbiting member and the second ring is attached to the end plate of the orbiting member. A plurality of pockets of the rings face one another in generally aligned pairs. A bearing element is received in each aligned pair of pockets to prevent the rotation of the orbiting member by the bearing elements interacting with the first and second rings and to carry the axial thrust load from the orbiting member. The first and second races are placed within the first and second annular grooves respectively in order to be able to circumferentially and radially move within a restricted range.
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Kitano Norio
Terauchi Kiyoshi
Sanden Corporation
Vrablik John J.
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