Patent ID: 7784665
Filing Date: 2010-08-31
Classification: B23K,Y10T

Abstract:
1. A vehicular body framing tool member mounting bracket for use in a body framing apparatus located at a welding station, the mounting bracket comprising: a base connected to a vehicular body framing member; and at least one tooling member comprising an integral extension arm mounted directly to the base by a centrally positioned fastener, the central fastener having a breakaway bolt having a head, an opposing threaded portion and a shank including a first cross-sectional diameter positioned between the head and the threaded portion, the bolt shank further having a localized second cross sectional diameter smaller than the first cross sectional diameter along the shank positioned between the bolt head and the threaded portion for controlled fracture of the bolt on a predetermined applied force to the tooling or framing member to avoid undesirable damage to the tooling or the framing member; an upper annular plate surrounding the bolt head; a lower annular plate surrounding the bolt shank; a compressible annular spring device positioned in surrounding relation to the bolt shank between the upper and lower plates; a plurality of upper attachment bolts passing downwardly through bores defined in the upper annular plate for threaded engagement with threaded bores defined in the lower annular plate; and a plurality of lower attachment bolts for passage upwardly through bores defined in the extension arm for threaded engagement with further threaded bores defined in the lower annular plate, the head of the fastener bolt bearing against the compressible spring device so that, with the fastener bolt passing through a bore defined in the extension arm for threaded engagement with a threaded bore defined in the base, tightening of the fastener bolt compresses the spring device to pre-tension the fastener bolt.