Abstract: A pressure vessel includes an enclosure adapted to contain a structural assembly in a pressurized environment. The vessel includes first and second enclosure components which together define the enclosure, the first enclosure component is movable relative to the second enclosure component which permits the enclosed pressure to be vented. Structure is provided for coupling between the first and second enclosure components, wherein the structure becomes inoperative when the pressure within the vessel reaches a predetermined excessive level thereby allowing the first enclosure component to separate from the second enclosure component. Structure for limiting the distance the first enclosure component may separate from the second enclosure component is also provided.

Abstract: An electrical switchgear apparatus for use in selectively connecting a primary power line with a tap power line includes a housing in which a switch assembly is disposed. The housing includes a source side wall and a tap side wall generally opposed to the source side wall, and conductors extend through each of the source and tap side walls. A live front terminator is electrically connected with the source side conductor and is adapted to be connected with the primary power line, while a dead front terminator electrically connects with the second insulated conductor and is adapted to be connected with the tap power line. A dead front enclosure surrounds the insulated conductors, the live front terminator, and the dead front terminator. Observation windows in the source side wall and in the dead front enclosure permit visual inspection of the switch assembly from outside of enclosure.

Abstract: A deadending device for guy cables and the like is provided which gives enhanced holding power (typically above the rated strength of the cable) while being relatively inexpensive to produce and easy to field install. The device includes a frustoconical, cable-receiving wedge block, preformed gripping wires for application to the cable and about the block, and a socket for receiving the block and surrounding wire portions. The gripping wires are permanently preformed during manufacturing using a novel method to present, adjacent one end thereof, an arcuate section configured to generally define a portion of an imaginary frustoconical surface complemental with the wedge block periphery. In this manner the wires substantially self-align in an even pattern about the block, and the need for wire-holding flanges or the like on the block or socket is completely eliminated.