Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1976-11-01
1978-09-05
Scott, Samuel
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74877, B60K 2100
Patent
active
041110749
ABSTRACT:
A power transmission that includes hydraulically-operated clutches that are electively supplied with operating fluids by a selector valve that is controlled by an error signal means constructed to compare prime mover speed and user demand speed. The transmission preferably is a split torque hydromechanical transmission having one power path going through a hydrostatic pump-motor unit and another path going only through epicycloidal gearing system containing the hydraulically-operated clutches. The transmission is controlled hydraulically rather than mechanically, thereby avoiding problems relating to mechanical slack, response lag, and reliability.
REFERENCES:
patent: 3733931 (1973-05-01), Nyman
patent: 3903756 (1975-09-01), Hamma
Edelberg Nathan
McKenzie, Jr. Frank H.
McRae John E.
Scott Samuel
Taucher Peter A.
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