Geometrical instruments
Patent
1982-03-04
1984-07-31
McQuade, John
Geometrical instruments
339 21R, 339 40, 339 43, H01R 1360
Patent
active
044626509
ABSTRACT:
An electrical distribution system comprises a longitudinally-extending conduit containing a plurality of continuous conductors. Spaced apertures are provided in one wall of the conduit to allow access to the conductors for a connecting plug. A safety mechanism is provided at each entry point substantially to prevent access to the conductors by means other than a correct connecting plug, and to facilitate assembly and servicing of the system this safety mechanism comprises a unitary assembly which can be inserted into or removed from the conduit as a self-contained unit.
REFERENCES:
patent: 2926327 (1960-02-01), Metelli
patent: 3951488 (1976-04-01), Hesse et al.
patent: 4003618 (1977-01-01), Booty
patent: 4139252 (1979-02-01), Gorny
patent: 4243284 (1981-01-01), Humphreys
Electrak International Limited
McQuade John
Pirlot David L.
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