Northern Telecom Limited

Sharanjit S Aujla

George Debortoli

John D Lee

Remo Contardo

Richard J Middlehurst

John P Simpson

An insulation displacing terminal has opposed cantilever spring contact members having two portions, lower and upper. The lower portions have their outer edges inclined upward and inward to give a first tapered portion. The upper portions have the outer edges inclined upward and outward to give second tapered portions. The upper and lower portions join at a neck or narrow section. The upper portions are of reduced thickness relative to the lower portions, the reduced thickness starting just above the neck section.

Insulation displacing terminal with cantilever spring contact members

A connector, for use for connection of local conductors to a distribution cable, in telephone systems, has an elongate body in which are a plurality of recesses. Insulation displacing terminals are positioned in the recesses, the lower part of each terminal connecting to a cable conductor. Connector members are pushed into the recesses by a trapped screw in each connector member. Local conductors are inserted into transverse passages or bores and as a connector member is pushed down, the top ends of the terminals pass up into the connector member and make contact with the conducitve cores of the conductors.

Cable terminal connector with insulation displacing terminals

A planar electronic filter has at least two dielectric plates with a ground plate between them and a plurality of parallel spaced electrodes on the outer surface of each plate. A contact area on at least one end surface connects with the ground plate. Usually contact pins are mounted, as by soldering, on the electrodes, a pin on each electrode, with the ends of the pins extending beyond the sides of the plates. The pin ends may be of male or female form, or can be formed for solder or wire wrapping attachment of conductors. The filter is generally mounted in a housing and it can be arranged that contact pins are not mounted on the electrodes but contact members in the housing make direct contact with the electrodes. A connector embodying the filter can comprise one or two housings. One housing can insert into the other and make contact with the filter.

Planar electronic filter element and a connector embodying such a filter

A connector has socket-type terminals, each terminal having a main body part from the front end of which two arms project, as cantilevers. The inner part of each arm is curved, generally arcuate, and the outer part of each arm extends generally straight and inclined away from each other. A contact position is formed at the junction between the inner and outer part. Such terminals are housed in slots in a plug and a receptacle has pins which are inserted into the terminals. Cam surfaces on the receptacle engage with the free ends of the arms after partial insertion of the pins and press the arms together, pushing the contact positions into contact with the pins. A low insertion force is obtained.

Minimum insertion force connector

A connector for connecting at least two insulated conductors, for example telephone line conductors, comprises a hollow body and a hollow cap, the cap, in a typical example fitting into the body to form an enclosure. The front of the body has apertures and guides for admission and guidance of conductors thereinto and the cap has insulation displacing terminals set in a top web. When body and cap are pressed together the terminals make contact with the conductive cores of the conductors. Terminal arrangements permit of butt, bridge and tap connections. A modified form of body permits a tap to be made to a continuous conductor. The cap and body can be provided in a partially assembled or first stage assembly which permits insertion of conductors, the cap and body then being pressed to a fully assembled or second stage assembly for connection of the conductors.

Connectors with insulation-displacing terminals

A retaining member for retaining cylindrical members, such as rods and wires, has a base and a pair of cantilevered dual action beams extending from the base, the beams having parallel opposed spaced apart inner edges, each beam having an upper and a lower portion, the lower portion having an upwardly and inwardly inclined outer edge and the upper part having an upwardly and outwardly inclined outer edge, the conjunction of the two portions forming a neck, and an entrance portion defined by a downwardly and inwardly inclined upper edge on each beam, the upper edges merging with the inner edges by a radius. Insertion of a cylindrical member deforms the upper portions to a large extent the portions bending about the necks. The lower portions are deformed to a lesser extent and have substantially uniform stress distribution. The members are particularly useful as contacts for insulation conductors, the insulation being crushed and during passage between the upper portions of the beams and removed on passage past the necks. The conductor is deformed while being pushed down between the upper portions and past the necks, to give a highly effective connection.

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Kanata, Canada

Sharanjit S Aujla