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High Density Pin Retainer

IP.com Disclosure Number: IPCOM000076680D
Original Publication Date: 1972-Apr-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Till, AW: AUTHOR

Abstract

This pin retainer is for testing printed-circuit cards and boards on 0.125 inch grid centers and may be used for much smaller grid centers. Clearance holes 1 for contact pins 2 are drilled through a glass-epoxy panel 3. The contact pins are provided with an undercut 4. Holes 5 on the same hole pattern as those in the panel and having the same diameter as the pin undercut diameter are drilled through a 0.003 inch thick sheet of polyester 6, such as MYLAR*.

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High Density Pin Retainer

This pin retainer is for testing printed-circuit cards and boards on 0.125 inch grid centers and may be used for much smaller grid centers. Clearance holes 1 for contact pins 2 are drilled through a glass-epoxy panel 3. The contact pins are provided with an undercut 4. Holes 5 on the same hole pattern as those in the panel and having the same diameter as the pin undercut diameter are drilled through a 0.003 inch thick sheet of polyester 6, such as MYLAR*.

To assemble, the contact pins are placed into the panel and then the MYLAR sheet is placed on the ends of all of the contact pins. With the aid of a tool 7, which is essentially a rod with a hole in it, the sheet is pushed, one pin at a time, into the pin undercut.

The resiliency of MYLAR makes assembly easy and provides gripping action of each Pin to the sheet. Pins can be removed several tomes in the same hole. The flexibility of MYLAR allows each pin to slide in the panel independent of adjacent pins. * Trademark of E. I. du Pont de Nemours & Co.

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