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Electrical Pin Contact

IP.com Disclosure Number: IPCOM000095453D
Original Publication Date: 1964-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Byrnes, HP: AUTHOR [+2]

Abstract

In subminiature circuits, pins are used extensively for contact members. These pins, being small and closely aligned, require a small connector. To meet these requirements, a connector is formed of soft beryllium copper tubing which is cut to a specified length and one end 10 flattened.

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Electrical Pin Contact

In subminiature circuits, pins are used extensively for contact members. These pins, being small and closely aligned, require a small connector. To meet these requirements, a connector is formed of soft beryllium copper tubing which is cut to a specified length and one end 10 flattened.

In flattening, the tubing takes a figure-8 configuration which has a stiffening effect. The flattened end is then shaped about a mandrel to form pin engaging portions or contacts 11 or 12 that are hardened by heat treatment and gold plated. Open end 14 forms a socket in which a wire is anchored by either crimping or soldering.

A further use of the tubing technique is in the formation of coaxial connectors. Here one copper tube 20 is encased in tube 21 of insulating material such as TEFLON*. Both are then inserted in a second copper tube 22. One end of the combined structure is then flattened and formed into two pin engaging portions or contacts 23 and 24. One, such as 23, is for a ground connection and the other for a signal circuit. These connections can be reversed by connecting ground to contact 24. As shown, the two leads 25 and 26 of a twisted wire engage these contacts and can be either ground or signal connections as desired. The other end of the connector can be inserted in a hole in printed circuit card 27 and the two tubes soldered to circuits 28 and 29. * TEFLON is a trademark of E.I. DuPont de Nemours & Co.

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