Power clamp

Details Power clamp Power clamp

1990-03-19

1991-09-10

Hartman, J. J.

Work holders

With fluid means

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

269280, 411432, 411437, B23Q 308

Patent

active

050467069

ABSTRACT:
A power clamp is provided that clamps the workpiece when the piston rod is retracted into the cylinder housing thereby preventing damage to the rod and clamp components that could occur from weld flash and other debris created while operations are performed on the workpiece. Other features are disclosed which increase reliability and enable a variety of different arms to be used with the basic clamp construction.

REFERENCES:
patent: 1367615 (1921-02-01), Malone
patent: 3027155 (1962-03-01), Paterson
patent: 3347542 (1967-10-01), Mericle
patent: 4021027 (1977-05-01), Blatt
patent: 4458889 (1984-07-01), McPherson et al.
patent: 4570914 (1986-02-01), Blatt
patent: 4681992 (1987-07-01), Kazmierski
24 pages of DE-STA-CO drawings, 1985.
Fisher A Style AP Model Cylinder (5 sheets); at least as early as 1977.
Stellhorn Catalog (1982), p. 104, Air-Hydraulic Cylinders.
ISI Manufacturing, Inc. brochure entitled "Power and Manual Industrial Clamps".
Bellows-Valvair brochure (1966) front page "Air Motor".
Lincoln Controls Hydraulic Pheumatic Systems and Equipment Catalog (1982), p. 186, Sheffer Series MH Hydraulic Trunnion Front Mount Style TF.

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