Abstract: An electric heating element for electrically fusing thermoplastic materials. The heating element comprises an elongated thermoplastic insulated wire wound in a spiral configuration with adjacent surfaces of the thermoplastic insulation adhered together.

Abstract: A device and method for covering pilings of piers and the like includes a plastic cover or sheet which is wrapped around the piling for protecting the piling against rot, weather and wear. The plastic sheet ends overlap as they wrap around the pile. The ends are sealed and secured by a heatable strip extending between the overlapped ends of the sheet and which forms a fused plastic seam between the overlapped ends as the sheet is held tightly about the pile. A strap and a bar which presses over the heatable strip is provided for temporarily cinching the plastic sheet tightly about the pile and holding it while the heat fusing occurs.

Abstract: A device and method of covering piles and the like includes a plastic cover or sheet which is wrapped around the pile for protecting the pile against rot, weather and wear. The plastic sheet ends overlap as they wrap around the pile. The ends are sealed and secured by a heating element extending between the overlapped ends of the sheet and which forms a fused plastic seam between the overlapped ends as the sheet is held tightly about the pile. A strap and bar which presses over the heating element are provided for temporarily cinching the plastic sheet tightly about the pile and holding it while the heat fusing occurs.

Abstract: A plastic pipe scraper for scraping selected portions of the exterior surfaces of plastic pipe sections is provided. The apparatus is comprised of a frame member having a handle attached thereto adapted to fit over the plastic pipe sections, a scraper blade carrying member pivotally attached to one end of the frame member, a scraper blade attached to the blade carrying member and adjustable spring means attached to the frame member and to the blade carrying member for urging the scraper blade with selected force into contact with the external surfaces of the pipe sections.