General Electric Company

John J Gizienski

Edward B Miller

Paul G Huber

Joseph P Stefani

Stephen P Short

Dewey L Harris

Robert J Mellen

To protect against flexure-induced failure of the conductors of an electrical cord terminated by an electrical connector, a strain relief in the form of an exterior collar is integrally formed with the connector in aligned relation with an exit opening in the connector body from which the cord emerges. The collar surrounds the exiting portion of the cord and is configured to provide longitudinally offset fulcrums for establishing longitudinally displaced flex points in the cord conductors depending upon the direction of flexure of the cord beyond the connector.

Strain relief for electrical cordsets

A voltage surge suppression circuit for a low voltage coaxial cable comprises a gas tube connected across the signal and shield conductors and an MOV connecting the shield conductor to a ground. In the case of a balance signal line comprising two conductors, a first gas tube connects one line to ground and a second gas tube is connected across both conductors. A third gas tube may connect the other conductor to ground in which case the second gas tube may be optional. The ground is preferably a ground associated with a power line voltage surge suppression means.

Surge suppression for low voltage signal circuits

An electrical power tap is provided with at least one shutter mechanism to block spurious insertion of a foreign object through one blade slot short of the power circuit contacts of an adjacent pair of plug receptacles. This mechanism includes a pair slides supported for independent movement between closed-latched and open positions. Access to the contacts of either power tap plug receptacle requires that its slide first be unlatched by a blade penetrating one slot and then cammed to the open position by another blade penetrating the other slot, as occurs incident to the insertion of a standard electrical plug.

Growing community of inventors

Coventry, RI, United States of America

John J Gizienski