Patent ID: 7228998
Filing Date: 2007-06-12
Classification: B25C,F16B

Abstract:
1. A tool for tacking tacks that have a longitudinal shank extending from a laterally enlarged head to a plunging end wherein each tack head provides a lateral abutment surface; said tool comprising: a body defining a course for a procession of said tacks; said course terminating in an expulsion station for a tack occupying a lead position of the procession, and being arranged to guide a successive tack, if any, to the lead position occupancy in the expulsion station; a piston having a cycle comprising a drive stroke for expelling the tack in the expulsion station, and a retraction stroke; a bias applicator for biasing the piston normally to a retracted position; and a mechanism actuated by the piston's cycle for incrementally advancing said successive tack, if any, to the lead position occupancy in the expulsion station after the piston's drive stroke; wherein said mechanism advances said successive tack to the expulsion station by accessing the lateral abutment surface thereof of a tack succeeding said successive tack; and wherein the bias applicator is a combination of springs including at least one compression spring; wherein a first end of a push link is pivotably connected to the piston and a second end of said push link is pivotably connected to the at least one compression spring; and wherein the at least one compression spring engages and actuates the mechanism for incrementally advancing the successive tack to the expulsion station.