Pipe joints or couplings – With assembly means or feature – Molded joint facilitator
Patent
1998-08-13
2000-10-17
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Molded joint facilitator
285 212, 285332, 285423, F16L 1302
Patent
active
061319546
ABSTRACT:
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 joined by removing substantially all of a first wall and the helical rib from the first pipe end, removing a portion of the helical rib from the second pipe end, coupling the pipe ends together and heating the weld assembly couple to fusion weld the pipe ends together. An electrical resistance element is provided for and placed within the pipe joint to provide the required heat. Also disclosed is the use of a thermoplastic sheet with the electrical resistance element to allow the end margins of the electrical resistance element to overlap without shorting by separating the end margins radially from one another and to allow for a more uniform fusion welded pipe joint. The resulting joint is a leak free joint with no interior flow obstructions or exterior collars or protrusions without the need for a coupler.
REFERENCES:
patent: 2741402 (1956-04-01), Sayre
patent: 2785910 (1957-03-01), Munger
patent: 3061503 (1962-10-01), Gould et al.
patent: 3095112 (1963-06-01), Weinstein et al.
patent: 3422179 (1969-01-01), Bauer et al.
patent: 3768841 (1973-10-01), Byrne et al.
patent: 3961814 (1976-06-01), Byrne et al.
patent: 4090899 (1978-05-01), Reich
patent: 4176274 (1979-11-01), Lippera
patent: 4274662 (1981-06-01), de Groot et al.
patent: 4341392 (1982-07-01), Dongeren
patent: 4365144 (1982-12-01), Reich et al.
patent: 4526410 (1985-07-01), Vohrer
patent: 4530520 (1985-07-01), Nyffeler et al.
patent: 4530521 (1985-07-01), Nyffeler et al.
patent: 4649641 (1987-03-01), Sichler
patent: 4770442 (1988-09-01), Sichler
patent: 4865674 (1989-09-01), Durkin
patent: 4906313 (1990-03-01), Hill
patent: 4919461 (1990-04-01), Reynolds
patent: 5096528 (1992-03-01), Durrenberger et al.
patent: 5099888 (1992-03-01), Valls
patent: 5150922 (1992-09-01), Nakashiba et al.
patent: 5328210 (1994-07-01), Stafford et al.
patent: 5336351 (1994-08-01), Meyers
patent: 5362112 (1994-11-01), Hamilton et al.
patent: 5362114 (1994-11-01), Levingston
patent: 5366253 (1994-11-01), Nakashiba et al.
patent: 5375889 (1994-12-01), Nakashiba et al.
patent: 5407514 (1995-04-01), Butts et al.
patent: 5407520 (1995-04-01), Butts et al.
patent: 5410131 (1995-04-01), Brunet et al.
patent: 5433484 (1995-07-01), Ewen et al.
patent: 5462314 (1995-10-01), Goto et al.
patent: 5494318 (1996-02-01), Butts et al.
"Industrial Catalog" by Central Plastics Company, 1901 W. Independence, Shawnee, Oklahoma USA, 74802-3129, pp. 1-24.
"We're Not Just Another Pipe Company We're The Polyethylene Pipe Advantage" by Poly Systems Incorporated, Route 1, Box 486, Steelville, Missouri 65565.
"Liners Give Rusted Culverts New Life, Higher Capacity" by Roads & Bridges, Feb., 1994, p. 42.
"Permacore" by Phillips Driscopipe, Inc. (a subsidiary of Phillips 66 Company), 1990, pp. 1-12.
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