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Miniature Contacts For Pluggable Modules

IP.com Disclosure Number: IPCOM000097339D
Original Publication Date: 1962-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Meiboom, SM: AUTHOR

Abstract

The two types of miniature contacts 13 and 14 are for plugging a small module card 15 onto a larger base board 16. Card 15 bears printed wiring 17 and lands 18 for components such as component 19 which is assembled and connected by dip soldering. A series of notches 20 in the two edges of card 15 have walls coated with metal and are connected as terminals for the several printed conductor lines 17.

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Miniature Contacts For Pluggable Modules

The two types of miniature contacts 13 and 14 are for plugging a small module card 15 onto a larger base board 16. Card 15 bears printed wiring 17 and lands 18 for components such as component 19 which is assembled and connected by dip soldering. A series of notches 20 in the two edges of card 15 have walls coated with metal and are connected as terminals for the several printed conductor lines 17.

It is desired to rapidly plug and remove one or more of the small module cards 15 relative to the large board 16. The latter has printed circuitry (not shown) connected to lands 21 arranged and proportioned to match the notches 20 in the edges of cards 15. Lands 21 surround plated through-holes 22. These are proportioned to receive lower stems 23 and 24 of contacts 13 and 14, respectively, to be soldered in them.

Although both of these contacts 13 and 14 are small sheet metal parts they differ in shape and mode of operation. Contact 13 is formed with a lower stem 23 which is U-shaped in cross-section. The sides of the U rise to where shoulders 25 are formed as stops for accurate insertion. The top of the U-section is stamped out so that only a single prong 26 rises clear of the stem and curves around and down with a slanted flexible contact wiping end 27. It is this end 27 which cooperates with the inner wall of a notch 20 to provide a pluggable connection between board 16 and card 15.

The other contact 14 is formed by folding a...