Browse Prior Art Database

Overlay for Wiring Changes

IP.com Disclosure Number: IPCOM000092354D
Original Publication Date: 1967-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Cuzner, DE: AUTHOR

Abstract

Drawing 1 shows printed circuit board 10 bearing on its upper surface an array of printed contact lands 11 and providing a network of interconnecting wiring between the lands. Board 10 is arranged to be brought into contact with an array of spring fingers, each making contact to one land 11.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Overlay for Wiring Changes

Drawing 1 shows printed circuit board 10 bearing on its upper surface an array of printed contact lands 11 and providing a network of interconnecting wiring between the lands. Board 10 is arranged to be brought into contact with an array of spring fingers, each making contact to one land 11.

Overlay 12, drawing 2, is positioned between the spring fingers and board 10 to make changes to the wiring network provided by the board. Overlay 12 is constructed by punching and etching a copper-faced MYLAR* sheet and is located over board 10 by dowels 13. These engage within locating holes 14 at each corner of overlay 12. Where no change in the wiring network is required, holes 15 are punched which correspond to lands 11. The spring fingers extend through the holes and make contact to their respective lands 11.

To delete a connection between two lands 11, the overlay 12 is left unpunched over those lands, as shown at 16, so that they are insulated from their respective spring fingers by overlay 12. If it is required to add an additional connection to the wiring network, land positions are left unpunched and further lands 17 and conductor 18 are printed on overlay 12. *Trademark of E. I. du Pont de Nemours and Co.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]