Abstract: The central conductor of a gas-insulated flexible cable consists of separate concentric tubes which are alternately spirally corrugated and annularly corrugated so that the corrugations will not nest relative to one another and are axially movable relative to one another.

Abstract: An insulation spacer for supporting a high voltage conductor within a flexible housing which is filled with electronegative gas has a central insulation hub and a concentric outer rim which are joined by a thin web. A plurality of tapered ribs extend from the outer rim to reinforce the outer rim against high loading forces and extend for approximately two-thirds of the radial thickness of the web and merge with the web. Ribs are placed at the latch and keeper areas of the halves of the insulator which are snapped together to form a single disk.

Abstract: An elongated flexible gas-insulated transmission line cable is fitted with pressure-tight termination assemblies at its opposite ends before it is placed on a reel for shipment. The cable is then filled with dry gas, such as nitrogen, at a relatively low positive pressure and the cable is then reeled and shipped. The cable terminal ends are adapted for easy connection to other circuit components without requiring access to the interior of the cable and the terminals permit the purging of the nitrogen gas and the installation of sulfur hexafluoride or some other electronegative gas before the cable is placed into operation.

Abstract: A termination for the stranded cable used in a gas-insulated bus is disclosed, where the termination consists of an expander structure which wedges into a central area of the stranded cable and presses the stranded cable against an outer conductive retainer cylinder. The expander structure consists of a cylindrical double-ended body which receives sliding wedges at its opposite ends which are drawn together by the operation of an externally accessible bolt. The sliding wedges are keyed to the cylindrical member to prevent relative rotation of the sliding wedges relative to the cylindrical member as the wedges are drawn together.

Abstract: A support insulator disk for a flexible high voltage transmission line supports a flexible central conductor along the central axis of a conductive outer housing which is transversely corrugated for flexibility. A plurality of such axially spaced disks are provided along the axis of the transmission line. Each disk consists of identical halves which are snapped together over the central conductor by identical snap latch pairs on the opposite sides of the halves. Each latch pair consists of an extending flexible member centrally located on the outer rim of the disk, and which overlies the other half and snaps into a depression in the other half. A direct line-of-sight is prevented from the central conductor to the outer conductive enclosure at the joint between the two halves of the insulator.

Abstract: An insulator disk for supporting a flexible conductor within a flexible gas-filled outer housing consists of three identical segments which latch together to form a complete disk around the central flexible conductor of the flexible cable. The outer peripheries of the three segments form a continuous outer periphery which is pressed into engagement with the interior surface of the grounded outer housing. Each of the identical segments has an extending latch at one of their outer surface ends and a latch receiving surface at the other of their outer surface ends, wherein the extending latch of one segment latches into the latch-receiving segment of an adjacent segment.

Abstract: A cutter for corrugated aluminum flexible pipe having a plurality of successive circumferential corrugations. The cutter frame is formed of two members hinged at one end and releasably closed at the other end to form a ring, a guide wheel or wheels ride the crest of one corrugation and a resiliently flanged wheel or wheel opposed to the first guide wheel or wheels ride the trough on either side. The blade is connected adjacent to one or between a pair of resiliently flanged wheels which permit the blade to be driven into the pipe. The C members are resiliently compressed toward each other by an adjustable spring controlling bolt which sets the pressure on the blade and allows for proper cutting even when the pipe varies in diameter. A handle recess or recesses on the ring receives a handle to rotate the ring for cutting.

Abstract: A cutter for a helically corrugated tube in which a pair of rings are connected by a blade carrier to form a track around the tube. Each of the rings comprises a pair of "C" members hingedly connected at one end and releasably connectable at the other end to form the ring. Each "C" member has a pair of rails supporting a circumferentially movable carrier having rollers at each end engaging the rails of the adjacent pair of rings. A holder on the carrier projects outwardly between the rails. A yoke in the holder carries the cutting blade; a compression spring in the holder drives the yoke and blade toward the tube. A threaded cup on the holder adjusts the compression spring and also provides a handle recess.

Abstract: A corrugated flexible thin copper tube filled with sodium has a resilient flexible core along the axis thereof so arranged that it will contract and expand to take up the force of thermal expansion and contraction of the sodium. Since the coefficients of expansion of the sodium and copper are different, the absorption of this differential in force by the core prevents rupture of the copper tube and the formation of voids and hot spots within the copper tube.