Vacuum clamp

Details Vacuum clamp Vacuum clamp

1993-01-21

1994-05-17

Watson, Robert C.

Work holders

Operator supported

269 21, 269 25, 269237, 269257, B25B 100, B25B 1100, B23Q 308

Patent

active

053120949

ABSTRACT:
A vacuum-operated clamp is provided, the clamp comprising a vacuum cylinder composed of a cylinder body, a cylinder piston having a piston rod and a resilient and sealing piston head or O-rings, a single pair of toothed jaws which are mounted on the piston rod and on the cylinder body, and a control valve mounted in the end of the cylinder body, whereby the stroke and the clamping force of the clamp may be controlled. The clamp body may be fabricated of plastic or metal. The clamp may further include a finger hole in one jaw in order to aid in operating the clamp. The vacuum-operated clamp disclosed requires no external source of vacuum.

REFERENCES:
patent: 254741 (1882-03-01), Walsh
patent: 1033492 (1912-07-01), Tedell
patent: 1075064 (1913-10-01), Prime
patent: 1400801 (1921-12-01), Cohen
patent: 2379629 (1945-07-01), Eweson
patent: 2381657 (1945-08-01), Eksergian et al.
patent: 2517941 (1950-08-01), Stubbs
patent: 2552304 (1951-05-01), Arter, Jr.
patent: 2656820 (1953-10-01), Becker
patent: 2706922 (1955-04-01), Allen
patent: 2849907 (1958-09-01), Moosman
patent: 2914977 (1959-12-01), Verderber
patent: 2947275 (1960-08-01), Edmond
patent: 3424486 (1969-01-01), Corley
patent: 4265476 (1981-05-01), Elgart

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