Illumination – Self powered lamp – With movable focusing element
Patent
1989-05-23
1990-07-17
Lazarus, Ira S.
Illumination
Self powered lamp
With movable focusing element
362203, 362205, 362207, F21L 700
Patent
active
049425056
ABSTRACT:
A miniature flashlight comprises a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb. The means for holding lamp bulb comprises an insulated receptacle disposed external to the end of the barrel to which the head assembly is engaged, a second insulated receptacle disposed within the barrel and matingly engaging with the first insulated receptacle so as to enable the first and second insulated receptacles to translate axially through a distance limited by a flange formed on the first insulated receptacle and an annular lip formed inwardly at the end of the barrel, and a pair of conductor members mounted in the second insulated receptacle such that one of the conductors serves to couple the center electrode of a dry cell battery to a first pin of the lamp bulb and the other conductor member serves to electrically couple the second pin of the lamp bulb to the lip formed on the barrel. A spring is disposed between the tail cap and the batteries within the barrel to urge the batteries into contact with the center conductor on the second insulated receptacle, thereby urging the second and the first insulated receptacles in the same direction until the second insulated receptacle contacts the lip on the end of the barrel whereat the second conductor member is in contact with the lip. The electrical circuit is thus closed by use of the barrel, the tail cap, and the spring to couple the second pin of the lamp to the case terminal of the battery.
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Mag Instrument, Inc. Brochure, "Exhibit B", Illustrating flashlight of Maglica Patent 4,286,311 8/1981.
Lazarus Ira S.
Mag Instrument Inc.
Neils Peggy A.
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