CA2219048A1 - Fastener-driving tool assembly with improved fastener-loading features - Google Patents

Abstract

Disclosed is a portable stand-up tool assembly (10) comprising a powder actuated nail-driving tool arranged to drive a nail (20) of a type comprising a shank (22) defining an axis and having a tip (24) at one end, and a head (26) integral with the other end of the shank. A resiliently biased nosepiece assembly (36) has an aperture (122) arranged to permit the nail (20) to be axially driven through it and a nail transport mechanism is responsive to depression of the resiliently biased nose piece assembly, when pressing the tool assembly downwardly against a work piece whilst standing on the workpiece, and subsequent release of the resiliently biased nose piece assembly, for transporting a nail in a direction transverse to the nail axis into a delivery position with the nail aligned axially with the aperture. A driving element (52) engages the nail head (26) so as to drive the nail (20) axially through the aperture (122) and the nail (20) is retained in the delivery position so as to prevent the nail (20) from dropping accidentally but so as to permit the nail (20) to be axially driven by the driving element (52). A handle (58) and trigger (60) are located remote from the nosepiece (36) to enable an operator to actuate the driving means to drive nails into a workpiece from a position standing on the workpiece and, there is a nail guide (104) for receiving nails loaded at a position located substantially adjacent the handle (58) and trigger (60).