Priority type flow dividing valve

Details Priority type flow dividing valve Priority type flow dividing valve

1999-06-08

2000-12-26

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137101, 251 50, F16K 1107

Patent

active

061643106

ABSTRACT:
A priority type dividing valve includes a housing, a spool slidably situated inside the housing and having a damper orifice, and a damper chamber formed between the spool and the housing for providing a resistance to the movement of the spool. The damper orifice is changeable and includes a small hole and notches, by which the damping effect is changed. At the time of a steering operation, the notches do not operate to increase the damping effect to thereby provide the sufficient holding force to suppress the vibration. When the spool is moved, the notches are actuated to reduce the damping effect to reduce the dragging resistance. Thus, the quick response is obtained.

REFERENCES:
patent: 3703186 (1972-11-01), Brewer
patent: 3777773 (1973-12-01), Tolbert
patent: 3939859 (1976-02-01), Ueda et al.
patent: 4784368 (1988-11-01), Kock et al.
patent: 5289843 (1994-03-01), Smith

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