Browse Prior Art Database

Serial Loop Connector

IP.com Disclosure Number: IPCOM000084103D
Original Publication Date: 1975-Sep-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Council, NE: AUTHOR

Abstract

Serial-loop communication systems are particularly suitable for in-house communication links. These may be typically used in retail establishments or in factory data collection systems. Ideally, the serial communications link should be provided with a number of connectors distributed throughout the premise, and terminals may be plugged in at these connectors when desired. The four-prong Western Electric connector and receptacles are particularly suitable in this application.

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Serial Loop Connector

Serial-loop communication systems are particularly suitable for in-house communication links. These may be typically used in retail establishments or in factory data collection systems. Ideally, the serial communications link should be provided with a number of connectors distributed throughout the premise, and terminals may be plugged in at these connectors when desired. The four-prong Western Electric connector and receptacles are particularly suitable in this application.

When a receptacle provided on the loop is not in use, some means must be provided for maintaining continuity of the conductors comprising the loop. This may be done by inserting plugs wired to directly connect the input and output pairs. Unfortunately, plugs when removed are easily lost and are not available when the terminal plug is removed to restore the loop continuity.

Described is a duplexed connector which automatically restores continuity when the terminal plug is removed. The subject serial loop connector consists of one Western Electric 283B plug, wired as a shorting or continuity plug, and two Western Electric type 404B receptacles, wired in parallel to each other and to a four-position terminal block. An enclosure for containing these parts is also provided. The above-described parts are illustrated in Figs. 1, 2 and 3.

The continuity plug with its cover removed is mounted on one surface of the enclosure. The two WE 404B receptacles are mounted back to back, a...