Battery operated device having a waterproof housing and gas disc

Details Battery operated device having a waterproof housing and gas disc Battery operated device having a waterproof housing and gas disc

1978-05-19

1980-12-02

Lechert, Jr., Stephen J.

Illumination

Self powered lamp

With hermetic seal

362202, 362267, F21L 700

Patent

active

042375266

ABSTRACT:
An electrically operated device comprising a waterproof housing enclosing at least one dry galvanic battery cell and including gas discharge means in the housing in communication with the atmosphere exterior to the device for discharging evolved hydrogen gas from the battery cell such that the concentration of hydrogen gas within the housing interior is maintained below about 10% by volume.

REFERENCES:
patent: 3794825 (1974-02-01), Kropansky

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