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Keyed Printed Circuit Board

IP.com Disclosure Number: IPCOM000096888D
Original Publication Date: 1962-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Taylor, GP: AUTHOR

Abstract

A series of normally open switches are provided in a program cap plugged into the wiring routes of a printed circuit board. The switches are selectively movable to closed position by a key insertable into the program cap.

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Keyed Printed Circuit Board

A series of normally open switches are provided in a program cap plugged into the wiring routes of a printed circuit board. The switches are selectively movable to closed position by a key insertable into the program cap.

The program cap includes a rectangular housing 1 having two parallel slots. In each, there is a row of fixed contact assemblies 2 and an opposing row of movable contact assemblies 3. Both contact assemblies include spring members which extend through housing 1 and project out the other side for insertion into holes 4 in printed circuit board 5. The ends of the springs are soldered to the board. The housing 1 has a lid 6.

An insulating key 7 has a notched and unnotched configuration corresponding to the specific wiring route desired. Key 7 is inserted into the program cap from one end. Those movable assemblies 3 which are adjacent unnotched portions of the key are deflected into engagement with their respective fixed assemblies 2, while the remaining assemblies adjacent notched key portions stay open. The key is contoured to close the contact assemblies at either side or both sides simultaneously. Thus, a wiring route for a specific electrical circuit is selected from a generalized printed circuit wiring arrangement.

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