Abstract: An insulator member includes a set of passages (2) (4) which, without intercrossing, extend through the main body (1a) of the insulator member. The set of passages (2) (4) includes an insulating passage (2) structurally arranged to be engaged by filiform elements (10) and an elongated anchor passage (4) structurally arranged to be engaged by the hook portion (21) of the stretcher device (20). Since the passages (2) (4) do not intercross, the separating portion (1d) prevents the stretched filiform elements from being subject to compression upon stretching of the stretching device.

Abstract: A power line fuse bypass having a first terminal for connecting to a first contact on one side of an electrical transmission line fuse, and a second terminal for connecting to a second contact on the opposite side of said fuse. An electrically conductive wire is provided for electrically connecting the first terminal to the second terminal. A coil spring is provided in surrounding relation to the wire with one end of the coil spring connected to the first terminal, and the second end of the coil spring connected to the second terminal.

Abstract: A composite insulator with a silicone rubber sheath coating the insulator rod between metal fittings. Adjacent the line fitting, at least, a series of weathersheds are mounted on the rod and fastened to the sheath with their hubs in abutting relationship and with one hub abutting the line fitting. Another series of sheds are spaced from each other and from the series of weathersheds having their hubs in abutting relationship.

Abstract: A load insulator 2, for interposition into a loaded line, comprises a plurality of mechanical links 4 connected together to form a chain, and an electrical insulator 8 arranged between a pair of adjacent interlocked links 10,12 in the form of an insert of insulative material to electrically isolate the links 10,12 of the pair from each other. A load sensing device may be provided for sensing the strain on the mechanical link. A measuring device 24 for measuring the resistance of the insulator 8 is provided to check the electrical condition of the load insulator, whilst a recording and indicating device allows for recording of electrical strikes and provide a lifetime expiry indicator.

Abstract: An end fitting with optimized weight for supporting an end of a device, such as an insulator, placed under tension. The end fitting has a mounting sleeve for coupling the end fitting to a core member, a mounting hole for receiving a cylindrical mounting pin therethrough and a cutout or removed portion positioned between the mounting hole and the mounting sleeve for optimizing the weight of the end fitting. The mounting hole can optionally be provided with a pair of contacting points spaced laterally relative to the vector line of force to redirect the tensile load applied to the end fitting by a mounting pin located in the mounting hole. The end fitting is especially useful in insulators subjected to tensile loads.

Abstract: A composite link and insulator, and method of construction, includes a fiberglass body. The body is formed by coating glass fibers with a liquid resin and winding the fibers around a plurality of tubular fittings or bushings in two layers, a first extending longitudinally of the body and the second transversely and around the first. A polymer shield layer and weathersheds are injection molded over the fiberglass body to create an insulator.

Abstract: An electrical isolation system is disclosed for use on sailboats having metal masts and shrouds for preventing accidental shocking or electrocution of persons who contact lower portions of the mast or shrouds and/or electrical conductors appended thereto when the top of the mast or shrouds come into contact with an electrical high voltage distribution or transmission line with the system including an insulating member separating the upper portion of the mast from a lower portion of the mast.

Abstract: An insulating core including a helical groove for use in a coil form, U-shaped grooves for use in an insulator in compression and diametrical holes for use in an insulator in tension. The wire used in the system is part of an antenna system.

Abstract: A one-piece corner post insulator of high density polyethylene for electric fences includes a relatively rigid U-shaped body having a spring arm extending from the end of one leg of the body towards the end of the other leg thereof. The spring arm has a hooked end releasably engageable with a keeper formed on the said other leg. An appropriately located hole in the rigid body permits one end of an anchor wire to be threaded therethrough and the other end looped over the corner fence post. The electric fence wire can be pressed between the hooked end and the said other leg into the opening formed by the spring arm and rigid body, and then the hooked end snapped into engagement with the keeper so that the electric fence wire is held captive.