Brian J Robinson

US Patent:

57046000, Jan 6, 1998

Filed:

Dec 5, 1995

Appl. No.:

8/567284

Inventors:

Brian Owen Robinson - Fraser MI

International Classification:

B23Q 306

US Classification:

269 32

Abstract:

A power operated clamp assembly 10 includes a clamp body 12, a reciprocatable member 20 extending into the clamp body 12, and a clamp arm 22 pivotally mounted to the clamp body 12 by a first pivot element 36. The clamp arm 22 is pivotable about a pivot axis 38 of the first pivot element 36 between first and second positions of movement termination C and D, respectively. A linkage assembly 46 has a drive end 48 adjustably secured to an end 56 of the reciprocatable member 20, and a clamp end 50 operatively secured to the clamp arm 22 so as to pivot the clamp arm 22 as the member 20 reciprocates. The linkage assembly 46 includes a connection pivotable about the pivot axis of a second pivot element 80. The drive end 48 is adjustable with respect to the end 56 of the reciprocatable member 20 so as to allow adjustment of the first and second positions C and D, respectively. One pivot element of the first and second pivot elements 66 and 80, respectively, includes an eccentric shaft having a central axis 124.