Power plants – Pressure fluid source and motor – Methods of operation
Reexamination Certificate
2007-03-12
2009-12-15
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
Methods of operation
C060S394000, C060S464000
Reexamination Certificate
active
07631494
ABSTRACT:
A hydrostatic transmission of a hydrostatic-mechanical power distribution transmission in which the high-pressure limiting valves in the hydrostatic transmission are eliminated or adjusted to enable a working pressure higher than the working pressure on which the maximum pressure is based. For short time intervals, a pressure substantially higher than the pressure on which the maximum pressure is based under constant load of the hydrostatic transmission, can be adjusted. The hydrostatic transmission has high-pressure sensors connected with the control of the hydrostatic-mechanical power distribution transmission.
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patent: 5964090 (1999-10-01), Nam et al.
patent: 7506717 (2009-03-01), Tatsuno et al.
patent: 195 25 823 (1996-03-01), None
patent: 43 96 170 (1996-10-01), None
Davis & Bujold P.L.L.C.
Leslie Michael
ZF Friedrichshafen AG
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