| Patent Number |
Title Of Patent |
Date Issued |
| 6896297 |
Gas service riser assembly and ductile pipe to plastic pipe transition connection |
May 24, 2005 |
| A gas service riser assembly and ductile pipe to plastic pipe transition connection is provided. The gas service riser assembly comprises an outer ductile pipe, a plastic pipe having open ends disposed within the outer ductile pipe and extending through one end thereof, a hollow rigid |
| 5988692 |
Metal to plastic pipe transition fitting |
November 23, 1999 |
| The present invention provides an improved metal to plastic pipe transition fitting. The transition fitting basically comprises a metal sleeve having a pair of metal pipe sections attached thereto and an annular groove within the interior thereof. A plastic pipe is disposed within the me |
| 5988689 |
Heat-shrinkable electrofusion fittings and methods |
November 23, 1999 |
| The present invention provides improved heat-shrinkable electrofusion fittings and methods. The fittings are basically comprised of an electrically heatable tubular plastic outer member which is shrinkable when heated to a transition temperature, an electrically heatable tubular plas |
| 5895543 |
Clamping apparatus for an electrofusion joint |
April 20, 1999 |
| A clamping apparatus for use in clamping a fitting to a pipe or other fitting. The apparatus may be used without supporting the outer surface of the pipe on the opposite side of the fitting, and in the case of a buried pipe, only a portion of the pipe needs to be excavated. The apparatus |
| 5798021 |
Clamping apparatus for an electrofusion joint |
August 25, 1998 |
| A clamping apparatus for use in clamping a fitting to a pipe or other fitting. The apparatus may be used without supporting the outer surface of the pipe on the opposite side of the fitting, and in the case of a buried pipe, only a portion of the pipe needs to be excavated. The apparatus |
| 5476562 |
Large diameter electrically fusible pipe methods |
December 19, 1995 |
| Methods of producing electrically fusable sleeve connectors for connecting large diameter thermoplastic pipe sections and the sleeve connectors produced by such methods are provided. Methods of sealingly connecting adjacent ends of a pair of large diameter thermoplastic pipe sections by |
| 5252157 |
Electrothermal fusion of large diameter pipes by electric heating wire wrapping and sleeve conne |
October 12, 1993 |
| Methods of producing electrically fusable sleeve connectors for connecting large diameter thermoplastic pipe sections and the sleeve connectors produced by such methods are provided. Methods of sealingly connecting adjacent ends of a pair of large diameter thermoplastic pipe sections by |
| 4978837 |
Method and apparatus for electrically heat welding thermoplastic fittings |
December 18, 1990 |
| An improved method and apparatus for electrically heat welding a thermoplastic fitting having an electric resistance heating element disposed therein. A controlled quantity of electric power is supplied to the heating element during the welding process to insure the making of a high |
| 4894521 |
Electric heating element for fusing thermoplastic materials |
January 16, 1990 |
| 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. |
| 4801159 |
Anodeless riser assembly |
January 31, 1989 |
| An improved gas meter riser assembly that is constructed in a manner that allows all welding to be carried out prior to application of protective coating thereby to maintain uniform epoxy cover. The invention consists of an outer riser pipe having a nipple welded thereon, which nipple is |
| 4713129 |
Plastic pile protector and method of covering a pile with same |
December 15, 1987 |
| 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 |
| 4708527 |
Plastic pile protector and method of covering a pile with same |
November 24, 1987 |
| 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 e |
| 4684789 |
Thermoplastic fitting electric welding method and apparatus |
August 4, 1987 |
| A method and apparatus for electrically heat welding a thermoplastic fitting having an electric resistance heating element disposed therein whereby a regulated quantity of electric power is supplied to the heating element during the welding process and the making of a high quality weld |
| 4663794 |
Plastic pipe scraper |
May 12, 1987 |
| 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 atta |
| 4642155 |
Thermoplastic fitting electric heat welding method and apparatus |
February 10, 1987 |
| A method and apparatus for electrically heat welding a thermoplastic fitting having an electric resistance heating element disposed therein whereby a regulated quantity of electric power is supplied to the heating element during the welding process and the making of a high quality weld |
| 4631107 |
Thermoplastic fitting electric heat welding apparatus |
December 23, 1986 |
| A method and apparatus for electrically heat welding a thermoplastic fitting having an electric resistance heating element disposed therein whereby a regulated quantity of electric power is supplied to the heating element during the welding process and the making of a high quality weld |
| 4602148 |
Thermoplastic fitting electric heat welding method and apparatus |
July 22, 1986 |
| A method and apparatus for electrically heat welding a thermoplastic fitting having an electric resistance heating element disposed therein whereby a regulated quantity of electric power is supplied to the heating element during the welding process and the making of a high quality weld |
| 4343518 |
Rod guide apparatus |
August 10, 1982 |
| A rod guide apparatus for a reciprocating rod comprised of two substantially identical half sections which include semicircular recesses therein and which are adapted to be lockingly clamped together adjacent opposite sides of the outer periphery of the rod whereby the rod extends th |
