Patent ID: 7228721
Filing Date: 2007-06-12
Classification: B21D,Y10T

Abstract:
1. A sheet bending brake for securing a work piece, comprising: a clamping member having a lower leg extending therefrom; a pivoting arm pivotally supported by and extending from the clamping member to define a clamping area with the lower leg; a guide mechanism reacting between the clamping member and the pivoting arm for moving said pivoting arm between an open position and a closed position, the guide mechanism having pivot link with a body, the body having a top end and a bottom end and first and second side walls, the top end being rotatably coupled to the clamping member, the bottom end being rotatably coupled to the pivoting arm and having a pocket extending toward the top end and a pair of slots extending from one side wall to the other side wall, the pair of slots each having a first end portion and a spaced and opposed second end portion, the pocket intersecting the pair of slots; a spring mechanism located within the pocket and being coupled between the guide mechanism and the pivoting arm; and a bolt threaded through an aperture in the pivoting arm and the pair of slots, the spring mechanism being located between the bolt and an end of the pocket, wherein the bolt is selectively operable to travel between the first end portion and the second end portion of the pair of slots so as to permit the compression and decompression of the spring mechanism.