Method of making electroweldable sockets

Details Method of making electroweldable sockets Method of making electroweldable sockets

1987-07-17

1989-01-17

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29460, 29618, 29621, 26427218, 403270, 285 21, H01C 1702, H01C 1704, H01C 1728, B23P 1904

Patent

active

047979933

ABSTRACT:
The invention relates to electroweldable sockets. Previously the predominant method of manufacture has been by injection molding which while producing a socket of acceptable quality it is expensive and relatively slow. The objective of the invention is to provide an alternative method of manufacture that is relatively inexpensive and relatively quick and yet does not sacrifice quality, which objective is met by a method comprising winding a length of electrical resistance wire (10) on to a transversely-split bobbin-type mandrel (2), leaving the ends (11) of the wire upstanding from the body part of the mandrel, passing the mandrel through the head (6) of an extrusion plastic processing machine to deposit plastic material (17) around the body part of the mandrel between the flanged ends, and to leave exposed the ends of the wire passing through the wall of the socket exposed, and removing the split mandrel from within the socket after it has emerged from the extrusion head, leaving the winding of resistance wire embedded in the surface of the bore of the socket.

REFERENCES:
patent: 2683572 (1954-07-01), Morin
patent: 2942333 (1960-06-01), Mason
patent: 4282003 (1981-08-01), Yashin et al.
patent: 4540533 (1985-09-01), Sahakian

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