Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid pump and motor in one of plural paths to or from...
Patent
1987-11-20
1991-12-10
Wright, Dirk
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid pump and motor in one of plural paths to or from...
F16H 4704
Patent
active
050713914
ABSTRACT:
A stepless speed change gear comprising a differential gear mechanism forming high and low speed side mechanical transmission systems, a variable speed hydraulic transmission mechanism consisting of two hydraulic pumps/motors joined with the differential gear mechanism and two synchromesh type intermittent on-off power mechanisms for high and low speed engagement of the transmission system outputs. When connection is made to the high speed side synchromesh type intermittent power on-off mechanism at the time when the high speed side rotational speed approaches the low speed side rotational speed with the low speed side synchromesh type intermittent power on-off mechanism connected, the high speed side synchromesh type intermittent power mechanism will automatically be connected. By switching the low speed side synchromesh type intermittent power on-off making mechanism into its non-connected state, switching from low to high speed mode may be made.
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Shimadzu Corporation
Wright Dirk
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