초록 ▼

A one-piece dead-front electrical plug comprises a dead-front member, conductive blades mounted therethrough, and two side covers hingedly connected to the dead-front member by integral web hinges. The side covers pivot between an open position affording access for making wiring connections between

A one-piece dead-front electrical plug comprises a dead-front member, conductive blades mounted therethrough, and two side covers hingedly connected to the dead-front member by integral web hinges. The side covers pivot between an open position affording access for making wiring connections between a cord and the conductive blades, and a closed position fully enclosing the wiring area. Each side cover has cord clamp teeth which cooperate to grip the cord. The web hinges are protected from longitudinal stress in one embodiment by side cover flanges which are matingly received in notch openings in the dead front member, and in another embodiment by dowel pins protruding from the dead-front member which are matingly received in openings in the side covers. Lateral stress protection of the web hinges is provided by an interengaging flange and groove structure of the side covers and dead-front member. A sealing compound barrier sleeve fits around the wiring connections and tightly against the dead-front member, and is filled with sealing compound to moisture-proof the wiring connections.

대표청구항 ▼

A dead-front electrical plug comprising: A. a dead-front member comprising the front of the dead-front electrical plug; B. at least two conductive blades mounted through and supported by said dead-front member, said blades including means for connecting wire conductors thereto; C. a first side cover

A dead-front electrical plug comprising: A. a dead-front member comprising the front of the dead-front electrical plug; B. at least two conductive blades mounted through and supported by said dead-front member, said blades including means for connecting wire conductors thereto; C. a first side cover comprising one side and substantially one-half of the ends and top of the dead-front electrical plug in its assembled condition, said first side cover pivotally connected to said dead-front member by a web hinge integral with both said first side cover and said dead-front member, wherein said first side cover is pivotable between an open position affording access to said means for connecting wire conductors to said blades and a closed position partially enclosing said means for connecting wire conductors to said blades; D. a second side cover comprising another side and substantially the other half of the ends and top of the dead-front electrical plug in its assembled condition, said second side cover pivotally connected to said dead-front member opposite to said first side cover by a web hinge integral with both said second side cover and said dead-front member, wherein said second side cover is pivotable between an open position affording access to said means for connecting wire conductors to said blades and a closed position fully enclosing, together with said first side cover, said means for connecting wire conductors to said blades; E. means for securing said side covers together to maintain the dead-front plug in its assembled condition fully enclosing said means for connecting wire conductors to said blades; F. at least one first member laterally protruding from one of said dead-front member or said first side cover near the web hinge connecting them, and at least one opening defined in the other of said dead-front member or said first side cover near the web hinge connecting them for receiving said first laterally protruding member in mating interengagement when the electrical dead-front plug is in its assembled condition, whereby said first laterally protruding member bears longitudinal stress between said first side cover and said dEad-front member in at least one longitudinal direction and protects said web hinge from such longitudinal stress; and G. at least one second member laterally protruding from one of said dead-front member or said second side cover near the web hinge connecting them, and at least one opening defined in the other of said dead-front member or said second side cover near the web hinge connecting them for receiving said second laterally protruding member in mating interengagement when said dead-front electrical plug is in its assembled condition, whereby said second laterally protruding member bears longitudinal stress between said second side cover and said dead-front member in at least one longitudinal direction and protects said web hinge from such longitudinal stress.