Abstract: A terminal bushing which has (a) an elongated central conductor made by a powder metallurgy process from metal particles sintered together at elevated temperatures after being compacted under pressure and (b) a tubular shell of polymeric insulating material molded under high within a mold pressure about the central conductor and forming a joint with the central conductor that has a high resistance to leakage along the conductor. The central conductor includes at opposite ends of the molded tubular insulating shell mold-interface regions that are formed by the powder metallurgy process and are located to interface with and to fit tightly within the mold that is used for molding the insulating shell, thereby limiting to low values the quantity of pressurized polymer ejected about the mold-interface regions during the molding.

Abstract: An electrical cutout with a modular product design is provided with a constructional configuration for the insulator wherein the insulator is light in weight, has sufficient mechanical strength, can be readily injection molded, and wherein the creep distance is statistically maximized. The electrical cutout has an insulator, an upper and lower line terminal assembly, and a fuse assembly. The insulator has an elongated central stem portion defining a longitudinal direction, and a plurality of longitudinally spaced apart skirts mounted to the stem portion and so as to lie in respective transverse planes which are perpendicular to the longitudinal direction. The elongated central stem portion of the insulator has a non-solid cross-sectional configuration.

Abstract: This support is for mounting on structure of electrical apparatus a fuse or other device that comprises a cylindrical tube. The support comprises a base adapted to be secured to said structure, the base having a length and a width dimension. Two legs project laterally from the base at its longitudinally-opposite ends, each leg comprising a body portion that has a proximate end and a distal end. The base and the legs are of rigid polymeric insulating material, and the body portion of each leg is integrally joined to the base at the proximate end of the body portion. At its distal end the body portion of each leg carries a flange that projects from the body portion longitudinally with respect to the base. Each flange has a concave arcuate surface facing away from the base that is adapted to receive a portion of the above cylindrical tube. The arcuate surface includes a first curved portion for receiving a relatively large diameter tube and another curved portion for receiving a relatively small diameter tube.