Power actuated portable marking tool
First Claim
1. A power actuated marking tool comprising,a longitudinal housing having a forward end portion and a rearward end portion, said longitudinal housing having a bore therethrough,a barrel assembly positioned within said housing bore for relative movement therein, said barrel assembly having a bore coaxially aligned with said housing bore,said barrel assembly having a cartridge receiving chamber positioned within said housing rearward end portion,a tool holder secured to said barrel assembly adjacent said forward end portion of said housing, said tool holder having a bore therethrough coaxially aligned with said barrel assembly bore,tool support means positioned for reciprocal movement within said tool holder bore for retaining marking elements in said tool holder,said tool support means having an anvil end portion axially positioned within said tool holder bore,a piston member positioned for reciprocal movement within said aligned barrel and tool holder bores and arranged to abut the forward end portion of said cartridge receiving chamber,firing means positioned in said housing rearward of said cartridge receiving chamber for actuating forward movement of said piston member in said barrel assembly to strike said anvil end portion and transfer a marking force to said tool support means,safety means pivotally connected to said tool holder within said bore thereof for restraining rearward movement of said tool holder and barrel to prevent cocking of said firing means when in a first position, andsaid safety means operable to assume a second position relative to said tool holder to permit rearward movement of said tool holder and barrel to permit cocking of said firing means.
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Accused Products
Abstract
A longitudinal housing includes a bore for slidably receiving a barrel assembly having a bore coaxially aligned with the housing bore. A cartridge receiving chamber is positioned within the barrel assembly, and a firing mechanism actuated by a trigger assembly fires the cartridge. The explosion forwardly propels a piston member positioned within the barrel assembly to strike an anvil end portion of a chase. The chase is retained within the bore of a tool holder that is secured to and movable with the barrel assembly. The chase includes a plurality of marker elements for impressing a mark upon the surface of an object. A pair of safety pawls are pivotally connected to the tool holder within the bore thereof and are arranged to contact a sleeve member surrounding the barrel assembly adjacent the forward end portion of the housing to prevent cocking of the firing mechanism unless marker elements are retained within the chase of the tool holder and the elements are depressed against an object to be marked.
25 Citations
10 Claims
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1. A power actuated marking tool comprising,
a longitudinal housing having a forward end portion and a rearward end portion, said longitudinal housing having a bore therethrough, a barrel assembly positioned within said housing bore for relative movement therein, said barrel assembly having a bore coaxially aligned with said housing bore, said barrel assembly having a cartridge receiving chamber positioned within said housing rearward end portion, a tool holder secured to said barrel assembly adjacent said forward end portion of said housing, said tool holder having a bore therethrough coaxially aligned with said barrel assembly bore, tool support means positioned for reciprocal movement within said tool holder bore for retaining marking elements in said tool holder, said tool support means having an anvil end portion axially positioned within said tool holder bore, a piston member positioned for reciprocal movement within said aligned barrel and tool holder bores and arranged to abut the forward end portion of said cartridge receiving chamber, firing means positioned in said housing rearward of said cartridge receiving chamber for actuating forward movement of said piston member in said barrel assembly to strike said anvil end portion and transfer a marking force to said tool support means, safety means pivotally connected to said tool holder within said bore thereof for restraining rearward movement of said tool holder and barrel to prevent cocking of said firing means when in a first position, and said safety means operable to assume a second position relative to said tool holder to permit rearward movement of said tool holder and barrel to permit cocking of said firing means.
Specification