Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1995-03-09
1996-08-13
Freay, Charles
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
188 821, F01C 104
Patent
active
055450199
ABSTRACT:
Disclosed are several embodiments of a stopping device operable between the drive shaft and/or orbiting scroll of a scroll compressor and a fixed wall forming part of the compressor, for the purposes of automatically engaging the wall upon reverse operation of the compressor to thereby quickly stop such reverse operation. Damage to the compressor in the event of powered reverse is also prevented, either by permitting the machine to run free or by quickly stopping it. Also disclosed are several ways to facilitate start-up with weak motors.
REFERENCES:
patent: 4415318 (1983-11-01), Butterworth et al.
patent: 4522574 (1985-06-01), Arai et al.
patent: 4867282 (1989-09-01), Hartley
patent: 5108274 (1992-04-01), Kakuda et al.
Anderson Gary J.
Beck Norman G.
Tucker Richard S.
Copeland Corporation
Freay Charles
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