Apparatus for eliminating external weather effects from the obje

Details Apparatus for eliminating external weather effects from the obje Apparatus for eliminating external weather effects from the obje

1980-03-13

1981-08-18

Henry, Jon W.

350 52, G02B 2308, G02B 2316

Patent

active

042843260

ABSTRACT:
In order to eliminate or suppress external weather effects from acting upon the objective lens system or arrangement of an aiming periscope installed at an armed combat vehicle, a part which protrudes out of the combat compartment or space of the vehicle is surrounded by a protective globe or hood. Between the protective globe or hood and the protruding part there are provided air channels, by means of which there can be conveyed an air current past the objective lens system towards the outside. Advantageously, the excess pressure emanating from the combat compartment is employed for generating the air current or flow. Apart from the weather protection which is thus provided for the objective lens system there also is afforded a temperature compensation within the aiming periscope.

REFERENCES:
patent: 759622 (1904-05-01), Lake
patent: 1222156 (1917-04-01), Steinmetz
patent: 2534884 (1950-12-01), Strang

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