Method for making a pipe coupling

Details Method for making a pipe coupling Method for making a pipe coupling

1976-04-29

1977-03-15

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29458, 29460, 29516, 29525, 285 53, 285292, B21D 3900, B23P 1904

Patent

active

040116522

ABSTRACT:
The present invention is a method for making an electrically insulative coupling which is inserted between and coupled to two lengths of metallic pipe. The method comprises the steps of machining one end of two short sections of metallic pipe to provide a circumferential groove, inserting O rings onto the grooves, inserting the machined ends of the pipe sections into a central sleeve, injection moulding an outer insulative sleeve over the machined pipe ends and central sleeve, and pressing a metal outer sleeve over the outer insulative sleeve. By this method the electrically insulative coupling is manufactured quickly and inexpensively.

REFERENCES:
patent: 2716623 (1955-08-01), Tator
patent: 3284110 (1966-11-01), Marcus et al.
patent: 3432186 (1969-03-01), Braun
patent: 3434900 (1969-03-01), Bender
patent: 3871687 (1975-03-01), Dockree
patent: 3892032 (1975-07-01), Bagnulo

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