Retainer in valve mechanism of booster

Details Retainer in valve mechanism of booster Retainer in valve mechanism of booster

1996-03-13

1998-01-06

Lopez, F. Daniel

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

F15B 910

Patent

active

057042691

ABSTRACT:
An improvement of a retainer which constitutes a valve mechanism for booster is disclosed. The retainer is used to secure the rear end of a valve element against a tubular terminal end of a valve body by abutment. The retainer comprises a tubular holder supporting the inner peripheral surface of the rear end and urging its outer peripheral surface into tight contact with the inner peripheral surface of the tubular terminal end, a securing portion, disposed rearward of the tubular holder and extending radially outward to be secured to the inner peripheral surface of the tubular terminal end, an anti-withdrawal portion disposed forwardly of the tubular holder and projecting radially outward, and a tapered portion disposed forwardly of the anti-withdrawal portion and extending radially inward and axially so as to be narrowed into a conical configuration. The construction, in particular, the provision of the tapered portion, facilitates fitting the rear end around the outer periphery of the tubular holder.

REFERENCES:
patent: 4712468 (1987-12-01), Blot
patent: 4794844 (1989-01-01), Taft
patent: 5355771 (1994-10-01), Watanabe

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