Rotary shaft coupler with rotary valve plate position dependent

Details Rotary shaft coupler with rotary valve plate position dependent Rotary shaft coupler with rotary valve plate position dependent

1997-09-05

1999-11-16

Nguyen, Hoang

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

91485, F16D 3900

Patent

active

059836350

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.
The orifice is communicates with the high-pressure chamber and is formed in a second-pin-member-side portion of the second enclosing hole; and

REFERENCES:
patent: 2691888 (1954-10-01), Nicolas
patent: 4034652 (1977-07-01), Huebner
patent: 4776257 (1988-10-01), Hansen
patent: 4914907 (1990-04-01), Okada
patent: 5103842 (1992-04-01), Suzuki et al.
patent: 5109754 (1992-05-01), Shaw
patent: 5325669 (1994-07-01), Barker et al.

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