Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1998-10-28
2000-05-30
Denion, Thomas
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
F01C 102
Patent
active
060684607
ABSTRACT:
A two speed gerotor motor in which the rotary disk valve (47) and the balancing ring (67) cooperate with a control valve assembly (87) to define four different fluid zones arranged within a housing (21) in a generally concentric pattern to provide a relatively compact arrangement. Among the four fluid zones one (95) is always connected to an inlet (51) while another (101) is always connected to an outlet (53). The middle two zones (97, 99) communicate with each other in the high speed, low torque mode. Operatively associated with the control valve assembly (87) is a shuttle valve (103) such that high pressure is always communicated to the middle two zones, such that high pressure is always circulated within the gerotor gear set (17) in the high speed, low torque mode. The control valve (87) includes a spool valve (107) including dampening passages (123, 125, 127) which dampen or cushion the shifting of the spool valve between the high speed and low speed conditions.
REFERENCES:
patent: 3572983 (1971-03-01), McDermott
patent: 4457677 (1984-07-01), Todd
patent: 4480971 (1984-11-01), Swedberg
patent: 4645438 (1987-02-01), Dahlquist
patent: 5061160 (1991-10-01), Kinder et al.
Haarstad Donald M.
Radford Karen J.
Stephenson Dwight B.
Denion Thomas
Eaton Corporation
Kasper L. J.
Trieu Theresa
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