Spring box assembly for use in clamping mechanisms of the over-c

Details Spring box assembly for use in clamping mechanisms of the over-c Spring box assembly for use in clamping mechanisms of the over-c

1976-11-29

1977-10-18

Watson, Robert C.

Work holders

With fluid means

Cylinder-piston means in series with additional positioning...

269157, 269224, 269238, 269254CS, 269285, B23Q 308

Patent

active

040542807

ABSTRACT:
A spring box assembly for use in clamping mechanisms of the over-center type comprises two nested metal housings, at least one spring located between such housings, and means for resiliently holding said housings together with a predetermined initial tension applied to the spring. In a preferred embodiment, at least one metal pin is secured at one end to the bottom of the inside housing and slip fitted in holes in the outside housing at its other end, a helical spring is located around such pin and means are mounted on the other end of such pin for holding the two nested housings together with a predetermined initial tension applied to such spring.

REFERENCES:
patent: 2311525 (1943-02-01), Ebbs
patent: 3292903 (1966-12-01), Meyer et al.

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