Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Printed Wiring Card Polarization Plugs

IP.com Disclosure Number: IPCOM000045616D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Kehley, GL: AUTHOR [+3]

Abstract

In order to satisfy set-up procedures and problem analysis and resolution requirements for a machine in the field, a simple and inexpensive method of polarizing each printed wiring card to its particular home socket position in a larger electronic package containing many printed wiring cards is proposed.

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 91% of the total text.

Page 1 of 2

Printed Wiring Card Polarization Plugs

In order to satisfy set-up procedures and problem analysis and resolution requirements for a machine in the field, a simple and inexpensive method of polarizing each printed wiring card to its particular home socket position in a larger electronic package containing many printed wiring cards is proposed.

Polarization is achieved through a trapezoidal polygon male plug mounted in a plastic card holder which, during card insertion, matches with a female receptacle assembled in the card guide rail.

Both the male plug and the female receptacle are designed with a square base and a tapered lead-in which allows it to be snapped into the larger part. This square base mates with a square hole in both the card holder and the guide rail. Since each card holder requires two plugs, a lower and upper, and the plug can be placed in one of four orientations because of the hole, 16 possible card polarizations can be achieved with one polygonal configuration. Other polygon configurations could be provided for additional combinations.

Different card connector systems may be used within the same electronic package, the connector systems having different pin arrangements. This polarizatIon method Prevents a card type from one connector system from being Plugged into a connector position of another system. During improper plugging, the male plug is rejected by the female plug before the connectors engage the board pins. In addition the polarizat...