Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1979-12-17
1982-01-26
Gonzales, John
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340605, G03B 1708, G08B 2100
Patent
active
043125808
ABSTRACT:
A watertight housing, preferably for photographic or cinematographical dees, which has a cover sealed against the penetration of water, which cover can be opened for access to at least one part that is important for putting a device arranged in the housing into operation. Viewed from the outside--behind the cover seal a moisture detector is provided. At least one evaluating device with a warning or signal device is connected to the moisture detector.
REFERENCES:
patent: 2691134 (1954-10-01), Ford
patent: 3045223 (1962-07-01), Kapany et al.
patent: 3789297 (1974-01-01), Frolich
patent: 4025930 (1977-05-01), Wolff
patent: 4029889 (1977-06-01), Mizuochi
patent: 4159420 (1979-06-01), Tsunoda
Breit Hans P.
Raimann Gerhard
Schwomma Otto
Eumig Elektrizitats- und Metallwaren-Industrie Gesellschaft m.b.
Farber Martin A.
Gonzales John
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