Air actuated clamp

Details Air actuated clamp Air actuated clamp

1987-07-31

1988-10-18

Watson, Robert C.

Work holders

With fluid means

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

269233, 269237, B23Q 308

Patent

active

047781637

ABSTRACT:
A pair of air cylinders are provided on the stand for holding a printed circuit board. A first jaw includes a sleeve having spiral slots at opposite ends which register with straight slots in sleeve sections on a second jaw and pins carried on an air cylinder and a piston rod head extend into the aligned slots. A spring normally contracts the air cylinder and air pressure overcomes the spring action to expand the cylinder and pivot the second jaw to a closed position relative to the first jaw for clamping the circuit board. In an alternative embodiment, the air cylinder is integral with a second jaw and a pin carried on the rod head moves in a spiral slot in a sleeve on the first jaw.

REFERENCES:
patent: 349099 (1886-09-01), Hosack
patent: 2974646 (1961-03-01), Miller et al.
patent: 3190216 (1965-06-01), Keller
patent: 3572216 (1971-03-01), Seesody
patent: 3722371 (1973-03-01), Boyle
patent: 3724836 (1973-04-01), Sendoykas et al.
patent: 3948502 (1976-04-01), Waller et al.
patent: 4396183 (1983-08-01), Lymburner
patent: 4494739 (1985-01-01), Valentine
patent: 4500081 (1985-02-01), Carossino
patent: 4618131 (1986-10-01), Campisi et al.

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