Adjustable pipe bend with electrofusion facility

Details Adjustable pipe bend with electrofusion facility Adjustable pipe bend with electrofusion facility

1991-08-28

1992-10-20

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Molded joint facilitator

285184, 285423, F16L 4702

Patent

active

051564203

ABSTRACT:
An adjustable pipe bend which has at least two parts joined by flanges (10, 10a) which incorporate an electrical fusion element in the form of a plastic annular disc (15) with a heater wire (16) located at or adjacent both surfaces of the disc.
A number of embodiments of the invention illustrate different adjustable bends, the arrangement being that the bend is adjusted to a required position and then the heater wire has a voltage applied to it to produce a heating current which causes the plastic annular disc and adjacent plastic faces of the flanges to melt sufficiently to cause fusion between the two parts of the pipe.

REFERENCES:
patent: 2731933 (1956-06-01), Phillips
patent: 3238346 (1966-03-01), Savko
patent: 3378672 (1968-04-01), Blumenkranz
patent: 4627646 (1986-12-01), Kessel
patent: 4630846 (1986-12-01), Nishino et al.
patent: 4851647 (1989-06-01), Kuhling
patent: 4906313 (1990-03-01), Hill
patent: 4932257 (1990-06-01), Webb

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