Fulcrums for Belleville springs

Details Fulcrums for Belleville springs Fulcrums for Belleville springs

1974-07-22

1976-04-20

Marbert, James B.

Spring devices

Bendable along flat surface

Ring or annular spider

F16F 134

Patent

active

039513939

ABSTRACT:
An improved rate controlling fulcrum surface for use with a Belleville spring having a cone height of the unslotted spring portion of about 1.7 to about 2.3 times the spring thickness. The fulcrum has a convex surface on which one face of the spring moves as a load is applied to the spring. The fulcrum is ring shaped and has a relatively wide convex face, the movement of the face of said spring on said fulcrum acting to modify the inherent rate variation in the Belleville spring to provide a greatly extended range of a substantially constant spring load or maintain a substantially linear rate of spring deflection during use.

REFERENCES:
patent: 2630897 (1953-03-01), Porter
patent: 3237739 (1966-01-01), Pritchard
patent: 3574347 (1971-04-01), Hughes

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