Molded tapping member formed of a weldable plastics material

Pipe joints or couplings – With assembly means or feature – Molded joint facilitator

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Details

285156, 285197, 137318, F16L 500

Patent

active

046554807

ABSTRACT:
A molded tapping member for connecting a branch line to a pipeline includes a U-shaped saddle piece with a shell-shaped bight section and a pair of laterally spaced legs each extending outwardly from an opposite end of the bight section. The legs are formed of partial sections connected to one another by a film hinge. After positioning the tapping member on the pipeline by moving it radially toward the pipeline axis, the bight section and the legs are pressed around the pipeline. A heating wire mat is incorporated into the U-shaped saddle piece so that it fits closely around the pipeline for welding the tapping member to the pipeline. With the construction of this saddle piece a uniform welding pressure can be established during the welding operation.

REFERENCES:
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patent: 3434745 (1969-03-01), Jackman
patent: 3649055 (1972-03-01), Nilsen
patent: 3891247 (1975-06-01), Smith
patent: 3987276 (1976-10-01), Vogelsanger et al.
patent: 4059291 (1977-11-01), Acda et al.
patent: 4436987 (1984-03-01), Thalmann et al.
patent: 4455482 (1984-06-01), Grandclement
patent: 4515177 (1985-05-01), Thalman et al.

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