Abstract: A mineral-insulated cable termination offering hermetic sealing of the cable end at temperatures in excess of 300.degree. C. having a metal spacer or extension sealed to the cable sheath which matches the cable conductor in thermal expansion, and a high-expansion, refractory glass, ceramic, or glass-ceramic seal filling the gap between and sealed to each of the spacer and the cable sheath, the termination offering stable protection for the cable insulation under corrosive high-temperature operating conditions.

Abstract: A slick-line coax cable for use in downhole well-logging under conditions which would normally prevent logging with standard `stranded` line cables includes a device for preventing migration of fluid inside the cable, a coaxial conductive layer of metal to allow more efficient data transfer from the downhole logging tools to the surface recording equipment, and a seal for terminating the downhole end of the metal-encapsulated cable thereby preventing downhole pressure and fluid migration into the cable.

Abstract: The power cable splice includes two cables, the stripped respective end portions of which are interconnected by a metal connector and are covered by a splice body and by electrical shielding. The splice further includes a flexible composite plate including a first layer that is semiconductive, and a second layer that is not electrically conductive, the plate being wrapped around the connector and around the ends of the stripped insulation of the cables, with the semiconductive layer of the plate being in contact with the connector.

Abstract: A waterproof splice for use in connecting two multiconductor electric cables having jackets of different insulation material and a method of making the splice are disclosed. The splice consists of a mechanical electrical connection between the conductors, a mechanical bond formed on the insulation of one of the conductors and a sheath of insulation material molded over the splice and adjacent cables. The sheath bonds with the jacket of one cable and the mechanical bond formed on the insulation of the other cable. The mechanical bond is a seal ring of elastomeric material that is compressed between glands to move the seal ring into sealing engagement with the conductor. The disclosed splice is both strong and waterproof in spite of the poor bonding characteristics between the two different insulation materials on the two conductors. The splice is appropriate for cables having surface, subsurface and underwater applications and is specifically designed for use in conducting seismic surveying operations.

Abstract: A cable assembly (8, 80) including an electrical cable (10) having a flexible tubular jacket (12) and a reinforcing structure (14) attached to the outside of the jacket in a smooth sealing connection (30), and a method of using radio-frequency electrical energy, applied radially through the cable jacket (12) and the reinforcing structure (14), to make the connection (30). A shield conductor (26) inside the cable jacket (14) may be used as an RF electrode, with a second RF electrode (42, 44) circumscribing a portion of the cable (12) and the reinforcing structure (14) and shaping the outer surface of the connection. The RF energy may be used instead to activate an adhesive (108). An outer electrode (118) may be embedded in the reinforcing structure (116) in one variation of the invention.

Abstract: A cable end seal for a multiple-conductor oil filled cable includes an inner sealing boot adjacent the cable and filled with an oil restraint material for the temporary restraint of cable oil and an outer boot and cylindrical mold filled with hardenable material for the permanent containment of the cable oil. The inner boot and oil restraint material prevents contact between the oil and the material at least until the material has hardened.

Abstract: An improved design for an electrical insulated "through" boot for a bare joint area formed by two electrical conductors made of a molded member arranged longitudinally around the joint area and having a main body portion with opposed flap members. Each flap member is coextensive with the main body portion and has a distal end. When the molded member is arranged around the joint area, the distal end of each flap member is wrapped around each other in an overlapping manner to form a seal and to enclose the joint area. The ends of the boot can be secured in place by clamps or wire ties. The boot is easily removed without being destroyed for maintenance of the conductors and is therefore reusable.

Abstract: A high-voltage compressed-gas circuit breaker having terminal plates with a contact face for incoming cables. The position of these contact faces and the attachment devices on the contact faces for the connection of the cables varies according to the form of installation given in the switching equipment. The contact faces are formed as a separate part from the terminal plate. On both the separate part and the terminal plate, bores for connection of the part and the plate are provided which do not affect the sealing by the terminal plates of the interior of the interrupter unit at its outer end faces. The bores permit an attachment of the separate part to the contact face in either a first position, or a second position which is rotated by 90.degree. from said first position.