Workpiece-contacting probe for fastener-driving tool for fastening dimpled membranes to foundation walls via fasteners and polymeric plugs

Abstract From the Canadian patent

A combustion-powered, fastener-driving tool useful to fasten a dimpled membrane to a foundation wall, via a fastener and a polymeric plug is arranged, to drive a fastener from a nosepiece through the plug and the membrane, into the wall. An actuating member mounted movably on the tool is movable thereon between an extended, tool-disabling position and a retracted tool-enabling position. A workpiece-contacting probe is mounted to the actuating member so as to be conjointly movable with the actuating member. The probe includes a plug-holdingmember adapted to hold the plug as the fastener is being driven having a tubular, wall defining a recess adapted to receive the plug and having two …