Illumination – Self powered lamp – With hermetic seal
Patent
1991-06-21
1992-05-12
Husar, Stephen F.
Illumination
Self powered lamp
With hermetic seal
362188, 362205, 362267, 137859, F21V 3100
Patent
active
051133261
ABSTRACT:
A miniature flashlight having a barrel, a tail cap, a head assembly and means for holding a miniature lamp bulb and providing an interruptible coupling to dry cell batteries retained within the barrel. One way valves positoned at seal locations in association with passageways to allow venting of overpressure with the interior volume of the flashlight.
REFERENCES:
patent: 4530039 (1985-07-01), Shin-Shi
patent: 5003440 (1991-03-01), Maglica
Husar Stephen F.
Mag Instrument Inc.
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