Explosion-proof electrical apparatus and method of assembly

Details Explosion-proof electrical apparatus and method of assembly Explosion-proof electrical apparatus and method of assembly

1993-12-22

1995-03-21

Picard, Leo P.

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

285175, 285357, H02G 306

Patent

active

053998073

ABSTRACT:
An explosion-proof electrical apparatus comprises two enclosures containing electrical devices. The enclosures are physically interconnected by a one-piece or two-piece hollow sleeve member which is screwed into threaded holes of the enclosures. A fitting assembly mounted in the sleeve member comprises a hollow feedthrough bushing screwed into the sleeve member, a hollow feedthrough seal member screwed into the feedthrough bushing, and a plurality of conductors extending through the feedthrough seal member and electrically connected to the electrical devices. The conductors are embedded in sealing compound which occupies the feedthrough seal member. During assembly of the fitting assembly, the feedthrough seal member is positioned within the sleeve, and the feedthrough bushing is screwed along the feedthrough seal member and is simultaneously screwed into the sleeve.

REFERENCES:
patent: 3761601 (1973-09-01), Kaesser et al.
patent: 4301325 (1981-11-01), Hutchison
patent: 4329540 (1983-05-01), Howarth
patent: 4549037 (1985-10-01), Bawa et al.
patent: 4814547 (1989-03-01), Riley et al.
patent: 5015804 (1991-05-01), Nattel et al.
patent: 5087795 (1992-02-01), Guginsky

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