Spring return system for a component able to move reciprocally

Details Spring return system for a component able to move reciprocally Spring return system for a component able to move reciprocally

1985-04-18

1986-10-07

Chambers, A. Michael

Valves and valve actuation

Biased valve

Springs and spring retainers

123188SC, 267170, F22B 500

Patent

active

046155074

ABSTRACT:
A spring return for the reciprocable slide of an hydraulic distributor. The return spring is trapped between flanges of opposed cup-shaped rings. The cup-shaped rings have conical sections which are positioned inside of the spring, but which do not contact the spring. Each cup-shaped ring has a transverse bottom, and each of the transverse bottoms surrounds the slide and contacts only a cylindrical centering section on the slide. The cylindrical centering sections on the slide are short, and each cylindrial centering section loses contact with the surrounding transverse bottom of the cup-shaped ring shortly after the slide moves relative to such cup-shaped ring.

REFERENCES:
patent: 3008687 (1961-11-01), Jawschek et al.
patent: 3084710 (1963-04-01), Gondek
patent: 4241753 (1980-12-01), Erwin et al.

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