| 摘要 |
A portable, handheld seam welding gun (11) for filling in seams between sheets of linoleum flooring (52,54) is provided with a unique heat nozzle (12). The heat nozzle (12) of the invention couples the heating barrel (34) of a conventional floor seam welding gun (11) to a conventional hollow welding tip (16) by receiving the heating air inlet tube (66) of the tip (16) within the confines of a downstream socket (96) formed in the body (82) of the heat nozzle (12). A larger, upstream socket (86) formed in the body (82) of the heat nozzle (12) fits onto the heating barrel (34) of the handheld, portable welding gun (11). A plurality of preheating jets (98,102,106) are formed on the underside of the body (82) of the heat nozzle (12) to preheat the region of the channel immediately to the rear of the welding tip (16) just before molten sealant flows into that portion of the channel. <IMAGE> |
