Apparatus for eliminating external weather effects from the objective lens system of an aiming periscope installed at an armed vehicle
US4284326A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1980 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Mar 13, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41H5/266
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.