Abstract:
A metal fastener for frangible material has a threaded shank, a head proximate one end of the shank and a tip at the opposite end. The fastener has a coarse pitch and relatively large ratio of major to minor diameters suited for securing the fastener into frangible material such as drywall or masonry.
Abstract:
A fastener carrier assembly used to secure rows of fasteners in a workpiece using a conventional driving tool. The fastener carrier assembly includes a plurality of fasteners, an upper strip and a separate lower strip. The upper strips include a plurality of interconnected, frangible collating elements. The lower strip includes sleeves that are intended to stay with the fastener after the fastener is embedded into a workpiece.
Abstract:
A combustion activated tool includes a housing having a longitudinal bore that extends and connects with a vertical bore, a piston and piston guide disposed within the longitudinal bore and moveable axially therein, and an advance lever having a reset end and an advancing end, the lever disposed on a pivot skew to the axis of the longitudinal bore, the lever having an axis essentially parallel with the longitudinal bore, the advancing end of the lever attached on an arm of the lever angled to one side of the axis of the longitudinal bore and effective to engage teeth on the side of a strip of charges disposed in the vertical bore, the reset end of the lever being disposed on the same side of the axis of the longitudinal bore engaging the piston guide along an edge of the lever.
Abstract:
A method for manufacturing an anchor bolt sleeve includes heat treating a steel blank, and cold working the steel blank into an anchor bolt sleeve subsequent to the heat treating, the anchor bolt sleeve being expandably receptive to a wedge of an anchor bolt.
Abstract:
A screw anchor includes a body having a head end that extends to a tip end through an intermediate portion defining an axis of the screw anchor, and a plurality of threads extending along the intermediate portion. Each of the plurality of threads includes a head side surface having a first angle relative to an axis perpendicular to the axis of the screw, and a tip side surface having a second angle relative to the axis perpendicular to the axis of the screw. The first angle is between about 30° and about 40°, and the second angle is between about 15° and about 25°.