Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1995-11-30
1998-01-13
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
91485, F16D 3900
Patent
active
057066582
ABSTRACT:
A hydraulic power transmission joint provided with a rotary valve in which a first enclosing hole is bored and moreover, a first spool valve, a first spring, a first pin member and a first communicating hole are provided. Further, a second communicating hole is also provided therein in such a manner as to be coaxial with the first communication hole. Moreover, a second enclosing hole having a smaller diameter is bored therein. Furthermore, a second spool valve having a diameter smaller than that of the first spool valve, a second spring, a second pin member, a third communicating hole, a fourth communicating hole and an orifice are provided therein. Further, a valve element, whose position is controlled, is enclosed in a high-pressure chamber formed in the rotary valve. Additionally, a gap between a pin portion of the pin member for holding the valve element and a communicating hole, which provides communication from the high-pressure chamber to the enclosing hole for enclosing the pin member, is used as the orifice for generating fluid resistance.
REFERENCES:
patent: 2691868 (1954-10-01), Nicolas
patent: 4034652 (1977-07-01), Huebner
patent: 4776257 (1988-10-01), Hansen
patent: 5103642 (1992-04-01), Suzuki et al.
patent: 5109754 (1992-05-01), Shaw
Kato Tadahiko
Nakamura Masaki
Shimada Kazuhisa
Fuji Univance Corporation
Nguyen Hoang
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