Fluid responsive, leverage operated chuck

Details Fluid responsive, leverage operated chuck Fluid responsive, leverage operated chuck

1974-08-26

1976-06-15

Whitehead, Harold D.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

269 25, B24B 4106

Patent

active

039628329

ABSTRACT:
A chuck assembly particlarly useful to position a lap or lens blank at the end of an oscillatory spindle for opthalmic lens grinding; comprises an opposing pair of jaws, one of which is fixed and the other a loosely hanging plate, laterally and longitudinally tiltable between engage and disengage positions by selective action of a fluid-operated piston having a conic contact head which distally abuts the jaw plate for leveraged closing fulcrumed against a workpiece-adjacent edge, in opposition to resilient means biased to hold the jaw open.

REFERENCES:
patent: 930639 (1909-08-01), Woodruff
patent: 1566003 (1925-12-01), Hill
patent: 1832968 (1931-11-01), De Armey
patent: 2561819 (1951-07-01), Porter et al.
patent: 3337210 (1967-08-01), Mayhew
patent: 3618271 (1971-11-01), Martiros
patent: 3686796 (1972-08-01), Clark

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