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Universal Printed Circuit Board Contact System

IP.com Disclosure Number: IPCOM000090004D
Original Publication Date: 1969-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Hoeft, RH: AUTHOR

Abstract

This method is for simultaneously making contact to a number of contact locations on a printed circuit board with extremely small interlocation spacing. Contact pins 10, fabricated of high permeability materials and plated with low resistivity metals, are passed through holes in plates AB:CD to contact areas to be tested on board E. A controllable electromagnetic field holds all pins simultaneously in contact with board E. With all pins contacting holes, pins, tabs, or lands on board E, plate B is moved perpendicularly to the axis of the pins, as indicated by the dotted line, to develop a contact force on distribution plate A. Each plated through-hole in plate A has fanned out circuit lines contacting a connector assembly, not shown, on plate A.

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Universal Printed Circuit Board Contact System

This method is for simultaneously making contact to a number of contact locations on a printed circuit board with extremely small interlocation spacing. Contact pins 10, fabricated of high permeability materials and plated with low resistivity metals, are passed through holes in plates AB:CD to contact areas to be tested on board E. A controllable electromagnetic field holds all pins simultaneously in contact with board E. With all pins contacting holes, pins, tabs, or lands on board E, plate B is moved perpendicularly to the axis of the pins, as indicated by the dotted line, to develop a contact force on distribution plate A. Each plated through-hole in plate A has fanned out circuit lines contacting a connector assembly, not shown, on plate A. The motion of plate B develops a controllable contact force in the holes of rigidly mounted plates A and C. Plate D is a mechanical buffer used to prevent uncontrolled movement of the pin 10 relative to board E except in the direction to maintain a contact force on board E. The latter can be supported by the flat surface of a large magnet or similar structure.

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