Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1992-05-11
1993-06-22
Hepperle, Stephen M.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137501, 251284, F16K 1107, G05D 1100
Patent
active
052209393
ABSTRACT:
A flow control apparatus is disclosed which includes a housing, a cylinder disposed in the housing and a spool disposed in the cylinder while being urged in one direction along the axial direction of the cylinder. The spool slides along the axial direction against the urging force, to adjust the flow quantity of a fluid. A stopper is disposed in the housing for restricting the range of the sliding movement of the spool toward the urging direction. A pair of engaging projections are disposed on the peripheral wall of either the housing and the stopper and are separated from each other by substantially 180 degrees, and an engaging hole disposed in the other of the peripheral wall and the stopper so as to engage at least one of the engaging projections. This at least one projection is engaging with the engaging hole by the urging force acting on the spool, to attach the stopper to the housing.
REFERENCES:
patent: 3170481 (1965-02-01), Presnell
patent: 3752182 (1973-08-01), Brand
patent: 3850195 (1974-11-01), Olsson
patent: 4361166 (1982-11-01), Honaga et al.
patent: 4549566 (1985-10-01), Fujiwara et al.
patent: 4700733 (1987-10-01), Uchino et al.
patent: 4768540 (1988-09-01), Mochizuki et al.
Hamasaki Yoshiaki
Nakayama Kouji
Shiina Akihiko
Hepperle Stephen M.
Koyo Seiko Co. Ltd.
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