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Campbell; Steve
St. Louis, MO
No. of patents:

Patent Number Title Of Patent Date Issued
6131954 Weldable couple for electrofusion coupling of profile wall thermoplastic pipes without a separat October 17, 2000
A method and apparatus are disclosed for a thermoplastic profile wall pipe joint or weld assembly without the use of a coupler to provide for a leak free pipe joint with substantially flush interior and exterior surfaces. The pipe joint consists of configuring the two pipe ends to be joi
5836621 Method of and joint for electrofusion coupling of thermoplastic pipes November 17, 1998
A method and apparatus are disclosed for a thermoplastic pipe joint. The pipe joint consists of a channel machined or routed into each end of the pipes to be joined and a coupler manufactured from substantially the same type of thermoplastic material as the pipes, with an electrical resi

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