Spring retainer

Details Spring retainer Spring retainer

1992-09-29

1994-01-04

Schwadron, Martin P.

Valves and valve actuation

Biased valve

Springs and spring retainers

123 9067, F01L 310

Patent

active

052753760

ABSTRACT:
A spring retainer for a poppet valve having a valve stem and a groove in the valve stem. The poppet valve is biased by a valve spring. The spring retainer includes a one-piece annular body having an opening through which the valve stem extends. The body has a spring flange encircling the body. The spring flange has a surface agains which the valve spring acts. The surface lies in a plane. The body further has members which deflect outwardly as the valve stem is inserted into the opening. The members snap into the groove to lock the retainer to the valve stem. The members include a plurality of fingers extending inwardly toward the opening and extending upwardly from the plane. Each of the fingers has an upper surface which tapers upwardly and inwardly as it extends from the spring flange and an inner surface for engaging the valve stem.

REFERENCES:
patent: 1775069 (1930-09-01), Finney
patent: 2844134 (1958-07-01), Sietman
patent: 3612016 (1971-10-01), Jelem
patent: 4432311 (1984-02-01), Holtzberg et al.
patent: 4653726 (1987-03-01), Lang et al.
patent: 4665869 (1987-05-01), Hinz et al.
patent: 4879978 (1989-11-01), Pierce
patent: 5143351 (1992-09-01), Pierce

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