Illumination – Self powered lamp – Having plural lamp bulbs or lamp sockets
Patent
1997-07-28
1999-03-02
Sember, Thomas M.
Illumination
Self powered lamp
Having plural lamp bulbs or lamp sockets
362197, 362205, 362287, F21L 700
Patent
active
058761101
ABSTRACT:
A flashlight has a water tight cylindrical battery casing and a sealed cylindrical closure which screws over the forward open end thereof. The closure includes a lens and a parabolic reflector. A first PC board fixed in the closure serves as a support member for a second PC board that serves as a mounting member for a pair of bulbs. The second PC board is pivotally connected to the first PC board in front thereof in overlapping fashion. The pins of the bulbs are plugged into forward opening pin receptacles in the second PC board. The second PC board can swing back and forth to move the bulbs through an arcuate slot in the reflector into and out of the focal point of the reflector. A manual actuator located on the outside of the casing can be toggled by a diver's hand and its motion is carried by a sealed linkage through the casing to pivot the second PC board. This allows the diver to selectively position a spare one of the two bulbs in the focal point of the reflector in case the bulb in use fails or to select a bulb with a higher intensity. This same motion also completes an electrical circuit through the two PC boards between the selected bulb and the battery so that the selected bulb is energized. A lamp head of the aforementioned configuration without batteries may be connected through a conductor cable to a separate battery pack having an ON/OFF switch.
REFERENCES:
patent: 1613203 (1927-01-01), Shannon
patent: 2245707 (1941-06-01), Packer
patent: 2264198 (1941-11-01), Chak
patent: 2312844 (1943-03-01), Moxley
patent: 2330673 (1943-09-01), Braum
patent: 4414612 (1983-11-01), Conforti et al.
patent: 4803605 (1989-02-01), Schaller et al.
patent: 5558430 (1996-09-01), Booty, Jr.
Jester Michael H.
Sember Thomas M.
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