Propellant strip assembly

#1. Field of the Invention

#The present invention is directed to a strip of cartridges for use in a powder actuated fastener driving device, and in particular, to a novel flexible strip which carries a plurality of propellant charges which are used to power a fastener driving tool.

#2. Description of the Prior Art

#FIG. 1 is a plan view, partly in cross section, of one embodiment of a propellant strip assembly constructed in accordance with the present invention.

#FIG. 2 is an elevational view of the strip assembly of FIG. 1.

#FIG. 3 is an enlarged section taken along lines 3--3 of FIG. 1.

#Referring now to FIG. 1, there is shown an embodiment of a propellant strip assembly, generally designated at 10, according to the present invention.

#Strip 10 is preferably composed of a thin, light flexible material, which is durable and resistant to tearing. A series of apertures or preforations 12 are spaced along each edge of strip 10. Perforations 12 enable strip 10 to be fed into a fastener driving tool by a suitable feeding means.

#Referring now to FIG. 3, propellant strip assembly 10 is composed of a carrier strip section 14 and a cover strip section 16. Carrier strip 14 contains a plurality of recessed pockets 18 each of which carry a propellant charge 20 which provides the combustion gases necessary to propel the piston of the tool for driving fasteners into a workpiece.