Switchgear with improved ventilation

Details Switchgear with improved ventilation Switchgear with improved ventilation

1996-12-23

1998-09-08

Joyce, Harold

Ventilation

Electronic cabinet

174 50, 174 161, H05K 500

Patent

active

058038035

ABSTRACT:
An arrangement capable of being assembled with either an existing installed electrical equipment enclosure or during the fabrication and assembly of the electrical equipment enclosure is provided that increases the ventilation characteristics of the electrical equipment enclosure and provides desirable tamper resistance. The electrical equipment enclosure includes at least one sidewall, at least one access panel carried by the sidewall, at least one support member spanning portions of the sidewall, and a roof being carried above the sidewall and the access panel. The sidewall, the access panel, the roof and the support member including predetermined turned edges forming flanges and being assembled so as to define predetermined passageways therebetween which provide predetermined ventilation characteristics and tamper resistance characteristics. The arrangement includes features for increasing the spacing of the roof from the sidewall and the support member when assembled with the electrical equipment enclosure and facilities for affixing to the support member and extending along and therefrom to resist tampering via the forming of a wire trap. In a specific arrangement, the roof includes threaded studs extending therefrom which extend through the support member to fasten the roof. For field retrofit installation, the spacing feature is provided by a spacer/extender member that includes a widened base portion and a sleeve portion having internal and external threads, the internal threads threadingly receiving the roof studs.

REFERENCES:
patent: 4644443 (1987-02-01), Swensen et al.
patent: 4672509 (1987-06-01), Speraw
patent: 4897762 (1990-01-01), Daikoku et al.
patent: 5193049 (1993-03-01), Jackson
patent: 5578792 (1996-11-01), Devonald, III et al.

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