Patent ID: 6187122
Filing Date: 2001-02-13
Classification: B29C,B29K,B29L,E04D,Y10T

Abstract:
A dual-weld roof membrane welding apparatus capable of welding a first membrane and an overlapping second membrane by simultaneously applying a weld on opposite sides of at least one roof membrane fastener fastened through the first membrane and located under the overlapping second membrane, the apparatus comprising:a movably supported chassis;a hot air welder attached to said chassis including a nozzle having an outlet including at least one opening for simultaneously applying a weld on opposite sides of the roof membrane fastener to weld the overlapping second membrane and the first membrane; andat least one weld wheel of a duo-durometer material rotatably attached to said chassis and located rearward of said nozzle relative to a direction of movement of said apparatus and capable of simultaneously applying pressure to the weld on each side of the roof membrane fastener.