Geometrical instruments
Patent
1979-12-19
1981-11-03
McQuade, John
Geometrical instruments
339196M, 339206P, H01R 13508
Patent
active
042982383
ABSTRACT:
A multi-pin electrical plug of the kind having a base with a first surface from which the current-carrying pins of the plug project, and a cover removably mounted on a second surface of the base, opposite the first surface, in a position of securement on the base. Interengaging means, for example cooperating tongues and grooves, are provided on the base and cover, by means of which the cover can be slid, in a direction substantially perpendicular to the axes of the pins of the plug, into its position of securement on the base. A movable locking means is incorporated in the plug for automatically locking the cover to the base, at least when the plug is inserted into a corresponding electrical socket with the cover in its position of securement on the base.
REFERENCES:
patent: 1387814 (1921-08-01), Bosch
patent: 3308421 (1967-03-01), White
patent: 3519980 (1970-07-01), Mosley
patent: 4006958 (1977-02-01), Kramer et al.
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