Thermoplastic pipe stub end

Details Thermoplastic pipe stub end Thermoplastic pipe stub end

1977-07-13

1981-09-22

Bryant, III, James E.

Pipes and tubular conduits

Combined

With end structure

138172, 285286, 285416, 285423, F16L 4702

Patent

active

042904560

ABSTRACT:
An improved thermoplastic pipe stub end for welding to thermoplastic pipe is disclosed. The stub end has a flange portion integrally joined to a neck portion which has inner and outer surfaces and terminates at a welding face. The improvement resides in the reduction of the length of neck portion such that it extends from the flange a distance in millimeters of not greater than 1.5 .sqroot.O.D., where O.D. is the outer diameter in centimeters of the neck portion at the welding face. The improved stub end permits higher strength heat welds to be made by butt fusion between the thermoplastic stub end and a thermoplastic pipe to be joined thereto.

REFERENCES:
patent: 2412487 (1946-12-01), Amley et al.
patent: 2453849 (1948-11-01), Merriam
patent: 2535437 (1950-12-01), McCann
patent: 2857175 (1958-10-01), Browning et al.
patent: 2933428 (1960-04-01), Mueller
patent: 3324894 (1967-06-01), Deal
patent: 3848421 (1974-11-01), O'Brien et al.
patent: 3850459 (1974-11-01), Blumenkronz et al.
patent: 3989283 (1976-11-01), Pepper

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