Double wall camera housing with thermostatic cooler

Details Double wall camera housing with thermostatic cooler Double wall camera housing with thermostatic cooler

1991-07-12

1992-10-13

Hannaher, Constantine

Radiant energy

Photocells; circuits and apparatus

Temperature control of photocell

35821316, H01J 4014

Patent

active

051553589

ABSTRACT:
A double wall housing for a camera contains a thermostatic switch which senses elevated temperature within the housing to activate a compressed air powered vortex tube which is capable of producing cool air. The cool air is supplied to a helical path between inner and outer housing members of the housing to cool the housing and its interior space. A second thermoswitch mounted outside the housing senses the ambient temperature and, if the temperature rises to a selected level, activates a compressed air supply for supplying purging air to the lens tube.

REFERENCES:
patent: 3609236 (1971-09-01), Heilman
patent: 3786269 (1974-01-01), Cooper
patent: 4290083 (1981-09-01), Collender
patent: 4301998 (1981-11-01), Rodway
patent: 4695881 (1987-09-01), Kennedy et al.
patent: 4767924 (1988-08-01), Giebel et al.
patent: 4933543 (1990-06-01), Hull

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