Work holders – With fluid means – Vacuum-type holding means
Patent
1994-05-31
1996-01-23
Watson, Robert C.
Work holders
With fluid means
Vacuum-type holding means
269 97, 269296, 269906, B25B 1100
Patent
active
054859883
ABSTRACT:
A vacuum-type clamping device for releasably holding a ski or other workpiece in a stationary position. The device is attached to a table by a C-clamp having the usual threaded rod. A suction cup is fixedly mounted on the non-clamping end of the rod and a nut carrying a rigid support ring having a pair of diametrically opposed contact portions is threadedly engaged with the rod. A surface of the workpiece is pressed into engagement with the upwardly facing, concave surface of the suction cup. The nut is then advanced on the threaded rod to bring the contact portions of the ring into engagement with the workpiece surface at positions on opposite sides of and spaced outwardly from the peripheral lip of the suction cup. Continued advance of the nut urges the workpiece away from the cup, thereby increasing the clamping force to the desired degree. The nut is rotated in the opposite direction to permit removal of the workpiece.
REFERENCES:
patent: 3591118 (1971-07-01), Gentile
patent: 3854712 (1974-12-01), McGee
patent: 3861664 (1975-01-01), Durkee
patent: 3912902 (1975-10-01), Herniter
patent: 4066250 (1978-01-01), Campbell
patent: 4175736 (1979-11-01), Dietlien
patent: 4262890 (1981-04-01), Sisko et al.
patent: 4708381 (1987-11-01), Lundback
McGuire Charles S.
Watson Robert C.
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