Purge enclosure for electrical equipment in hazardous location

Details Purge enclosure for electrical equipment in hazardous location Purge enclosure for electrical equipment in hazardous location

1989-09-01

1990-10-16

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

With fluid-condition responsive and/or indicating means

73461, 116270, 116DIG8, 174 17GF, 2062131, 206305, 206328, 312 1, 324156, 383106, H05K 500

Patent

active

049636936

ABSTRACT:
A protective or purge enclosure provides a positive atmosphere around an operating device such as a hand-held computer or calculator contained therein. The protective enclosure has sufficient flexibility, even though providing a positive, sealed atmosphere, to enable the user to operate the functional features of the device sealed within the enclosure, and the material forming the device is sufficiently transparent to enable the user to view the functional features of the device for operation. A visible indicator provided on the enclosure enables the user to determine if the enclosure is maintaining the positive atmosphere sealed therein.

REFERENCES:
patent: 1119986 (1914-12-01), Pleger et al.
patent: 2786740 (1957-03-01), Taylor et al.
patent: 3415582 (1968-12-01), Trexler
patent: 3665991 (1972-05-01), Gillemot et al.
patent: 4729337 (1988-03-01), Schopp

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