B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
B05C 17/01 (2006.01) B05C 21/00 (2006.01)
Patent
CA 2298244
An improved piggyback dispensing feature for extended dispensing devices. The piggyback feature may be incorporated in any conventional extended dispensing device of the type having a housing with a downwardly extending handle, a trigger pivoted to the handle, an extension bracket attached forwardly of the housing, a barrel assembly attached to the extension bracket opposite the housing, a piston rod slidably supported in the housing and extension bracket and protruding into the barrel assembly. The improvement comprises an interchangeable push-disk piston mounted on the distal end of the piston rod, and a smaller barrel assembly adapted to be seated inside the other larger barrel assembly to accommodate a smaller-sized cartridge. The smaller barrel assembly piggybacks in the larger, and the push-disk piston swaps out, thereby making it possible to use one extended gun for at least two different--sized cartridges, such as the typical 1/4 gallon cartridges and 1/10th gallon cartridges. A variety of interchangeable/adjustable guide assemblies are also shown for attachment to the dispensing gun for guiding the application of a bead of caulk or adhesive along trusses, joists and other structural components. The guide assemblies include a quick- change and an adjustable guide both with opposing legs attached to a T-shaped undercarriage. In the latter case, the legs are readily adjustable by hand on-the-fly to accommodate large- width and double--trusses and joists. A quick-change detent-locking guide assembly for the above- described dispensing gun is also shown to allow a quick-change reversal to accommodate single joist, double joist, and other structural components.
Chang Peter J.
Riches Mckenzie & Herbert Llp
LandOfFree
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