Patent ID: 8118203
Filing Date: 2012-02-21
Classification: B25C

Abstract:
1. A hammer-drive powder-actuated tool adapted for activating ignition of a rimfire cartridge, the rimfire cartridge having a rear end and an annular primer disposed at the rear end of the rimfire cartridge, said tool comprising: a hollow tool body extending along a front-to-rear direction; and a firing device disposed within a rear end portion of said tool body and including: wherein said through hole in said pin holder has a front hole section, said front hole section having a front distal end, a rear distal end, and a diameter that reduces gradually from said front distal end to said rear distal end so that said front hole section has a minimum diameter at said rear distal end, the minimum diameter of said front hole section being adapted to be smaller than the minimum diameter of the rear end of the rimfire cartridge.