Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With gas – vapor – or flame contact means for work
Patent
1996-04-22
1998-07-07
Engel, James
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With gas, vapor, or flame contact means for work
156499, 156579, B32B 3100
Patent
active
057762996
ABSTRACT:
An improved torch assembly (10) designed for use in the formation of roof lap joints even in cold weather is provided which includes an elongated handle (12) having a low profile torch head assembly (17) secured thereto. The assembly (17) has a drag shoe (14) adapted to receive a torch head (16) and direct combustion products through a rearward outlet opening (54). Minimal torch head assembly height is provided so as to avoid cracking of stiff lap weld material during cold weather use, and is achieved through use of an elongated, rectangular in cross-section torch head (16) which fits between upper and lower walls (24, 32) forming a part of shoe (14); the head (16) has a number of large area air inlets (74) owing to its rectangular configuration, allowing generation of sufficient heat to give lap welds of high integrity. In an alternative configuration, a carriage assembly (76) is coupled with the torch head assembly (17) for supporting a roll (77) of roofing material above the torch head (16).
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