Electronic instrument

Details Electronic instrument Electronic instrument

1997-08-07

1999-05-04

Tolin, Gerald

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electrical power distribution systems and devices

73706, 137 85, 174 521, 361752, G05D 1620, H02B 110

Patent

active

059010347

ABSTRACT:
The electronic instrument has a two-part housing (26, 27) which surrounds in a dusttight manner a printed board fitted with at least one electronic component. The housing (26, 27) contains a ventilating orifice (50) led through one of its two parts. A ventilating device (51) is arranged in this ventilating orifice (50), with an air-permeable diaphragm permeable to water vapor in a directionally dependent manner and with a splashwater guard preceding the diaphragm.
Undesirable condensation water in the housing interior is avoided, since excess water vapor present in the housing interior is led outward through the diaphragm while the electronics are operating. At the same time, the splashwater guard prevents the diaphragm from coming into contact with splashwater and its operating capacity from being impaired.

REFERENCES:
patent: 3835353 (1974-09-01), Hermstein et al.
patent: 5053924 (1991-10-01), Kurgan
patent: 5159949 (1992-11-01), Prescott
patent: 5533544 (1996-07-01), Good
patent: 5806565 (1998-09-01), Kadlicko

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