Coupling device for electrical trunking

Details Coupling device for electrical trunking Coupling device for electrical trunking

1995-07-11

1997-01-14

Machtinger, Marc D.

Electricity: conductors and insulators

Conduits, cables or conductors

Combined

174 84R, 174 92, H01R 438

Patent

active

055942121

ABSTRACT:
A coupling device for prefabricated electrical trunking. An internal member fits inside enclosure sections of the trunking which are to be butt-jointed. The internal member has water drainage grooves on its outer surface near a mating plane of the butt-joint. An exterior member fits over the joints and its two halves are bolted together.

REFERENCES:
patent: 3562402 (1971-02-01), Dwyer
patent: 3831130 (1974-08-01), Valtonen
patent: 4186986 (1980-02-01), Shoemaker
patent: 4493525 (1985-01-01), Hall et al.
patent: 4614399 (1986-09-01), Gemra et al.
patent: 4810829 (1989-03-01), Rutenbeck et al.
patent: 4964815 (1990-08-01), Kawai et al.
patent: 5266044 (1993-11-01), Whitney et al.
patent: 5415558 (1995-05-01), Baker

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