Abstract: An aircraft ground power cable system having field-replaceable nose and contact components. The connector body is at one end integrally molded to a ground cable sheath and at the other end is provided with internal fixed contacts to which a replaceable nose section may be threadably secured. Weather- and water-tight seals are provided about the peripheral junction of the nose section and the connector body as well as about the sealing screws which secure the nose to the body. Also provided on the connector body in sealed relationship are a replaceable switch plate and switches mounted on that plate. The replaceable nose section includes replacement contacts for engaging mating contacts on the aircraft.

Abstract: An electrical connector system, particularly one that connects armored electrical cables for oil wells through an upper surface connector that is mated to a feed-through mandrel, automatically operates a circuit breaker in the main power circuit as the upper connector is unmated from the mandrel. A pair of relay (R) wires are carried with the main power conductors through the upper connector. A set of relay (R) contacts, preferably pins and sockets, electrically connect the R wires between the connector and the mandrel. The contacts in the mandrel are wired together. Unmating the connector withdraws the R pins from their sockets which trips a relay or otherwise operates the main circuit breaker. Power (P) contacts, preferably pins and sockets, for the main power conductors are longer than the R pins so that power in the main conductors is shut off before arcing can occur.

Abstract: A field-attachable electrical connector splices the conductors of two armored cables without hand soldering. The connector has a rigid hollow housing with axial passages at both ends that receive and locate the cables. Insulating end supports locate and seal the conductors projecting from the outer armor jacket. A sealing connector, also formed of an insulating material, bridges the end supports and surrounds the stripped ends of the conductors of both cables and a pin contact secured on each conductor's end. A locking contact socket member with two axially oriented oppositely directed sockets is secured in a passage of the seal connector between a pair of the stripped ends. A spring clip carried on the pin contact mates with a recess in the socket connector to secure each pin contact in a reliable electrical connection within an associated socket. Each socket connector has a gas impermeable wall between its two sockets.

Abstract: An electrical cable for use in oil wells and other hostile environments. The cable includes one or more solid or stranded conductive elements, each of which is covered first by an insulating layer of high-temperature insulation. The insulating layer is covered by a metallic barrier composed of tape or film which may be coated with bonding material. Over the metallic barrier a semiconductive layer is formed, and that in turn may be encased in an armor sheath, the semiconductive layer providing cushioning as well as an electrical connection between the metallic barrier and the armor sheath.