Patent ID: 7374178
Filing Date: 2008-05-20
Classification: B23B,Y10T

Abstract:
1. A workholding apparatus comprising: a body; at least one drive member carried by said body and having a portion that is radially displaceable, said at least one drive member and said body at least partially defining a fluid chamber therebetween for containing a fluid, said at least one drive member having an annular flange portion axially abutting and attached to at least a portion of said body to resist rotation of the at least one drive member relative to the body; at least one driven member carried by said body, said at least one driven member having at least one displacement relief therein; a ring member disposed axially rearward of said at least one driven member; at least one drive pin extending axially through at least a portion of said at least one driven member and into a portion of said ring member to resist said at least one driven member from twisting relative to said at least one drive member; and a nose piece mounted to said body axially forward of said at least one driven member, said at least one drive pin further extending axially into a portion of said nose piece to further resist said at least one driven member from twisting relative to said at least one drive member.