International Business Machines Corporation

Molex Corporation

Basil D Washo

Richard A Johnson

Howell B Schwartz

Thomas J Dudek

Frank A Harwath

Prabjit Singh

David L Brunker

Benedicto U Messina

Donald J Brinkman

George M Jordhamo

Glenn A Landgraf

Edward C Hallee

Joel A Weiner

A static dissipative electrical cable which eliminates the build-up of triboelectric charging by having a carbon loaded outer jacket which is a semiconductor for draining off triboelectric charges. In one embodiment, the jacket material is a 1 megohm/ft semiconductive extrudable Teflon polyfluorinated alkoxy (PFA) resin static-dissipative polymer of low carbon-black loading (3-4% by weight) having very stable electrical/mechanical properties against temperature excursions, thermal/environmental shock and aging. The cable is designed with a double-clad aluminum/mylar foil shield that allows electrical commoning between inner and outer clads of the foil and control of the interface between semi-conductive static-dissipative jacket and the foil shield to yield a jacket-to-ground wire resistance value between 100 kilo-ohms and 50 megohms. The latter insures adequate draining of triboelectric charges to ground, while maintaining a high resistance path to any ground loop current from neighboring cables or frame ground.

Static dissipative electrical cable

A connector pin that has one or more regions along its length modified in cross-section so the region deforms plastically as a result of stress induced by displacement of connected members. As used herein, plastic definition means that the structure approaches a condition where it will continue to yield without increase in load. Each region therefore provides a deformable or 'plastic' hinge, limiting a moment applied to the solder joint as a result of lateral displacement of the connector relative to the circuit board.

Load limited pin for an electrical connector

An electrical connector is disclosed for interconnection to a printed circuit board having signal traces and ground circuitry thereon. The connector includes signal contacts for termination to the signal traces on the printed circuit board. A conductive housing has receptacles, including insulators, for mounting the signal contacts therein. A plurality of ground projections are formed integral with the housing for interconnection to the ground circuitry on the printed circuit board.

Shielded electrical connector

A connector for terminating wires and cables is constructed of two mating thermoplastic members. One of the members carries a pattern of conductive material which forms edge contact pads, signal lines, ground lines and a ground buss interconnecting all ground lines. The other thermoplastic member is formed to include a series of ribs that parallel and contact the ground lines and ground buss. The surface of the thermoplastic member carrying the ribs and the ribs are plated with a copper layer and when assembled with the mating member forms grounded tunnel-like passages enclosing the signal lines and into which the signal conductors of the wires or cables extend to terminate on the signal lines.

Input output connector with coaxial shielding and strain relief

Growing community of inventors

Poughkeepsie, NY, United States of America

Basil D Washo