Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1994-11-09
1995-11-21
Ryznic, John E.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
91468, 296107, F16D 3102, F15B 1108, F15B 1304, B60J 700
Patent
active
054675960
ABSTRACT:
A self-contained rotary actuator assembly has a pump assembly, a precharged hydraulic circuit, and a rotary vane actuator in a single unit. The pump assembly is a bi-directional electric motor driven gerotor pump which is manifolded to a module assembly in which the control elements of the hydraulic circuit are housed. Upon the application of the pressure for driving the rotary actuator in either direction, a pilot operated hydraulic valve is shifted so as to communicate the rotary actuator with the pump. After the pump is turned off, an orifice for the pilot chamber of the valve bleeds the pilot chamber slowly so as to provide a delay in which the rotary actuator holds the convertible top extended or retracted to give the vehicle operator time to latch the top in its closed or open position. In addition, a gas charged precharge chamber in the hydraulic circuit maintains a precharge through a broad range of temperatures.
REFERENCES:
patent: 898516 (1908-09-01), Shevlin
patent: 2324023 (1943-07-01), Rappl et al.
patent: 2596355 (1952-05-01), Ackermans
patent: 2606534 (1952-08-01), Pond
patent: 3359870 (1967-12-01), Purcell
patent: 3788075 (1974-01-01), Holdeman et al.
patent: 4628690 (1986-12-01), Arai et al.
patent: 4665558 (1987-05-01), Burke
patent: 4964273 (1990-10-01), Nash
patent: 5048295 (1991-09-01), Hoscheler
patent: 5067768 (1991-11-01), Fischbach
Applied Power Inc.
Ryznic John E.
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