Geometrical instruments
Patent
1978-08-15
1980-01-01
Abrams, Neil
Geometrical instruments
339 31R, H01R 4100, H01R 2900
Patent
active
041813880
ABSTRACT:
The present invention is directed to a tap member for use with a multi-conductor electrical track, e.g. a track having four (4) conductors, namely, three live conduits and a neutral conduit, which tap member is adjustable to enable the same to be connected selectively to any one of the three circuits defined between the live conduits and the neutral conduit.
REFERENCES:
patent: 3496518 (1970-02-01), Neumann et al.
patent: 3832503 (1974-08-01), Crane
Abrams Neil
Colvin Arthur B.
Lightolier Incorporated
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