Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1981-05-05
1984-03-06
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418104, 3081871, F01C 102, F01C 1912, F01C 2102
Patent
active
044351364
ABSTRACT:
A fluid displacement apparatus, in particular, a compressor unit, is disclosed. The apparatus includes a housing having a front end plate member and a fixed member and an orbiting piston member. The members interfit to make a plurality of line contacts to define at least one pair of sealed off fluid pocket. A driving mechanism, including a drive shaft is disposed within the housing and is connected to the orbiting piston member to effect the orbital motion of the orbiting piston member by the rotation of the drive shaft. The front end plate member is comprised of a front end plate portion in which is formed an opening for passage of the drive shaft, and an annular sleeve portion extending from a front end surface of the front end plate portion for surrounding the drive shaft. The drive shaft is rotatably supported by two bearing means which are disposed within the front end plate member. A shaft seal assembly is assembled on the drive shaft within the front end plate member and is placed between the two bearing means. Therefore, the load of the two bearing means is reduced without increasing the length of the housing.
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Sakamoto Seiichi
Terauchi Kiyoshi
Sanden Corporation
Vrablik John J.
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