| 摘要 |
A portable, handheld, light-weight device for sealing seams between adjacent sheets of flooring in which a seam following guide is incorporated as an inseparable part of the body of the handheld device. The guide has a pair of laterally separated rollers carried by a roller mounting that has a narrow, seam following element located midway between the rollers. A support on the body may be extended to hold a sealant dispensing tip out of contact with the adjacent sheets of flooring, or collapsed to allow the tip to contact the adjacent sheets of flooring that are to be sealed together with sealant therebetween. An electrically powered propulsion system drives the rollers and is operable to automatically advance the device along a seam as sealant is discharged into it. Alternatively, the device can be manipulated manually with the propulsion system disabled for use in detail work. |
| 主权项 |
1. A device for sealing seams between adjoining sheets of flooring comprising.
a portable, handheld seam sealing welding gun weighing no more than about 10 pounds and having a body defining a longitudinal axis and having a heating element end an opposite electrical power supply end, a sealant extruding nozzle mounted on said heating element end of said body, a roller mount having opposing ends and permanently formed into said opposite end of said body and located beneath said longitudinal axis and defining an axis of roller rotation, a narrow, seam following element oriented perpendicular to said axis of roller rotation and, together with said longitudinal axis, defining an upright plane perpendicular to said adjoining sheets of flooring and wherein said axis of roller rotation is oriented perpendicular to said upright plane, and a pair of rollers mounted on said opposing ends of said roller mount and laterally spaced equidistant from said upright plane and coupled to said roller mount for rotation about said axis of roller rotation. |
