Abstract: An improved electrical bushing is disclosed which includes, in combination, an insulating body of a polyester material, a current-carrying stud, and an adhesive coating applied to the grooved peripheral surface of the stud. The bushing is manufactured by applying the adhesive coating to the peripheral surface of the stud. The polyester insulating body is then molded about the stud. Heast is applied to concurrently cure the polyester body and adhesive coating to achieve a bonded, fluid-tight seal between the stud and the insulating body.

Abstract: A separable connector module of the fault-actuated piston type comprises an aluminum container tube, a bore contact member within the container tube, and a piston for actuating the bore contact member in response to closing on a fault. The piston is primarily of copper but has a thin coating of dissimilar metal on its exterior. A sleeve of copper tightly fitting with the container tube acts as a cylinder for receiving the exterior of the piston in contacting relationship between copper and said dissimilar metal. The sleeve has adjacent one end an integrally formed end wall containing a central opening, and a copper-alloy nut is brazed to the end wall adjacent the central opening.

Abstract: A connector module for loadbreak operation having an insulating housing and a switch insert. The insert includes a container with a major portion of uniform diameter and a configuration such that the diameter does not increase from its outer end to its inner end. Inside the container is a snuffer-contact assembly. A bore contact having a gas port is attached to a snuffer tube of the assembly and has fixed to it a piston adapter for driving the snuffer-contact assembly toward the open end of the container tube in response to gas generated by arcing inside the bore. Resilient sliding contact means are fixed to the piston and press against the inside wall of the container tube to establish continuous electrical contact with it even while the piston is moving. A gas check valve member is resiliently seated against the inner side of the gas port. Keyways in the piston ride over longitudinal keyribs formed in the wall of the container to prevent rotation of the piston in the container.

Abstract: A connector module for loadbreak operation having an insulating housing and a switch insert. The insert includes a container with a major portion of uniform diameter and a configuration such that the diameter does not increase from its outer end to its inner end, to permit the insert to be installed in the finished housing. Inside the container is a snuffer-contact assembly which has a bore lined with an ablative material. A bore contact having a gas port is attached to a snuffer tube of the assembly and has fixed to it a piston adapter for driving the snuffer-contact assembly toward the open end of the container tube in response to gas generated by arcing inside the bore. Resilient sliding contact means are fixed to the piston and press against the inside wall of the container tube to establish continuous electrical contact with it even while the piston is moving.