Illumination – Self powered lamp – With hermetic seal
Patent
1979-04-27
1980-12-30
Lechert, Jr., Stephen J.
Illumination
Self powered lamp
With hermetic seal
362189, 362205, F21L 700
Patent
active
042427240
ABSTRACT:
A disposable, floating electric flashlight that glows in the dark and is illuminated by merely squeezing the flashlight casing. Any external switch actuator passing through the flashlight casing is thereby eliminated facilitating buoyancy. When the flashlight is illuminated, phosphorescent material within the internal walls of the flashlight casing is regenerated to cause the flashlight to glow in the dark. If the flashlight is accidentally dropped into water, the lamp is balanced to float the flashlight in a predetermined orientation to enable the glowing light to be quickly retrieved.
REFERENCES:
patent: 3796869 (1974-03-01), Stone
Lechert Jr. Stephen J.
Roehrig, Jr. August E.
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