Kurt M Swenson

US Patent:

44101694, Oct 18, 1983

Filed:

Nov 19, 1981

Appl. No.:

6/323040

Inventors:

Kurt F. Swenson - Newton NJ

Assignee:

J & S Tool Company, Inc. - Livingston NJ

International Classification:

B23Q 302

US Classification:

269 32

Abstract:

A work-holding clamp retains a work piece on a machine tool table and includes a body member having a flat supporting surface and the means to secure the body member to a work table. This body member is made with a stepped bore formed therein and therethrough. The forward end of the body member has a formed dovetail in which moves a jaw member at a selected slant or slope. Within this body member is a reciprocal hydraulic piston having its forward end formed with two cam surfaces. A lower cam surface is adapted to engage a mating cam surface on the jaw to move the jaw member forwardly and downwardly to a gripping condition. An actuation of the piston rearwardly causes an upper cam surface to engage a removable pin to move the jaw member upwardly and rearwardly to disengage the jaw member from the workpiece. This piston is carried in the stepped bore with the rear of the piston being a sliding fit in the larger portion of the bore. An inlet for pressurized air or fluid is formed in the stepped bore adjacent to the fixed seal and inflow of pressurized air or fluid causes rearward movement of the piston.