Drain for electrical enclosure

Details Drain for electrical enclosure Drain for electrical enclosure

1995-12-11

1997-08-26

Kincaid, Kristine L.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

210266, 220371, 405 52, 405303, H02G 308

Patent

active

056612656

ABSTRACT:
An explosion proof drain for incorporation into an enclosed electrical system including a hollow housing with an opening at an upper end and an annular flange circumscribing a smaller opening at a lower end. A porous, metallic disk is force fitted into a bore in the housing and seated against the annular flange. A filling material is poured into the bore of the housing and is supported by the porous metallic disk. A second porous, metallic disk is force fitted into the opening in the upper end of the drain to ensure that the sand does not exit the drain.

REFERENCES:
patent: 1007828 (1911-11-01), Webb
patent: 1011395 (1911-12-01), Ziller
patent: 2402840 (1946-06-01), Olley
patent: 2405927 (1946-08-01), Tornblom
patent: 2675886 (1954-04-01), McMullen
patent: 3356255 (1967-12-01), Zavertnik et al.
patent: 3585082 (1971-06-01), Siller
patent: 3767050 (1973-10-01), Reiner
patent: 4175671 (1979-11-01), Holl et al.
patent: 4216349 (1980-08-01), Wium
patent: 4467136 (1984-08-01), Wium
patent: 5449453 (1995-09-01), Tang
Appleton Electric Co. Master Catalog 005-Rev. 2 ECDB Drain Breather, 1995.
Killark Catalog #3500 R, KBID Drain (Group B), 1991.

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