Safety sleeve for attachment to the prong of an electrical conne

Details Safety sleeve for attachment to the prong of an electrical conne Safety sleeve for attachment to the prong of an electrical conne

1977-09-06

1979-03-13

Abrams, Neil

Geometrical instruments

339 76, 339244R, H01R 1344

Patent

active

041439333

ABSTRACT:
A sleeve having a central channel for receiving a prong of an electrical connector and preventing use of the connector is provided. A locking stud in the form of a projection extends on a flexible arm into the channel. Upon insertion of the prong in the channel the locking stud engages a hole in the surface of the prong as is commonly provided. In one embodiment there are two such locking studs on opposite sides of the channel to engage opposite sides of the hole in the prong. The tip of the locking stud is beveled to facilitate insertion of the prong and the opposite face of the locking stud is perpendicular to the channel to prevent removal of the prong. A key having two slightly divergent blades with beveled ends is inserted in the channel. The blades slide by the end of the prong deflecting the arms and withdrawing the locking studs from the holes in the prong permitting removal of the prong. The sleeve can be constructed from two identical components. Ribs are provided in the end of the channel where the key is inserted to prevent the insertion of the prong in the wrong end. The channel is preferably larger on the end in which the key is inserted and the key is of a corresponding size so the key will not be inserted in the wrong end of the sleeve when the sleeve is not in use.

REFERENCES:
patent: 2664734 (1954-01-01), McEneary
patent: 2955272 (1960-10-01), Gallardo
patent: 3345600 (1967-10-01), Scherer
patent: 4030795 (1977-06-01), Niemann

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