Adjustable work support

Details Adjustable work support Adjustable work support

1981-06-25

1983-08-02

Watson, Robert C.

Work holders

Work-underlying support

Support mounting means

B23Q 302

Patent

active

043961860

ABSTRACT:
An adjustable work support for relatively light loading having an extendable plunger locked in position by a fluid-operated piston which acts on a disc positioned between the rod of the piston and the plunger and which is urged to a position to take up clearance to avoid shift of the disc and resulting inadvertent retraction movement of the plunger. A sealed cavity with a flexible bladder communicates with a piston chamber housing the piston and a closed end of the bore mounting the plunger whereby flow of fluid to the sealed cavity avoids any ram effect on the plunger when the piston is operated to lock the plunger in position.

REFERENCES:
patent: 2984212 (1961-05-01), Hicks et al.
patent: 3421750 (1969-01-01), Tridgell
patent: 3559980 (1971-02-01), Terai
patent: 3729185 (1973-04-01), Roeske
patent: 3792855 (1974-02-01), Bondie
patent: 3883153 (1975-05-01), Singh et al.
patent: 3938798 (1976-02-01), Solie et al.
patent: 3998444 (1976-12-01), Stockwell
patent: 4196896 (1980-04-01), Burns

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