H - Electricity – 05 – K
Patent
H - Electricity
05
K
347/1
H05K 5/06 (2006.01) E05B 65/00 (2006.01) H02G 3/08 (2006.01)
Patent
CA 1053789
ABSTRACT EXPLOSION PROOF AND WATERTIGHT ENCLOSURE WITH INSPECTABLE MEANS FOR VERIFYING VALIDITY OF RECLOSURE When electrical equipment is used in a hazardous atmosphere, it must be enclosed in an explosion proof en- closure so an electrical spark cannot cause a fire or ex- plosion. The present invention provides a means for assuring that an explosion proof enclosure which has been opened for inspection, repair or adjustment of the electrical apparatus is restored to its original condition. To this end, a visually inspectable locking means is provided. The locking means can be engaged only when the enclosure compartment and its asso- ciated cover are restored to their original explosion proof relationship. The locking means does not exert any distorting force on the mating threads of the enclosure.
259119
Browne Frank L.
Toth Maria
LandOfFree
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