Illumination – Self powered lamp – Cylindrical flashlight casing
Patent
1994-01-11
1995-12-12
Lazarus, Ira S.
Illumination
Self powered lamp
Cylindrical flashlight casing
362202, 362118, F21L 700
Patent
active
054755751
ABSTRACT:
A focusable flashlight comprising a cylindrical tube for containing a battery, a head combined with the front end of the tube by means of a spring stop, a lamp holder and a spring pusher, the head functioning as a switch by being movably screwed to change the distance between the lamp holder and the front end surface of the tube in turning on or off electric power from the battery and at the same time light focusable by means of a transparent lens and a light reflector fixed at the front of the head.
REFERENCES:
patent: 1397646 (1921-11-01), Maisel
patent: 3963914 (1976-06-01), Browning et al.
patent: 4286311 (1981-08-01), Maglica
patent: 4949231 (1990-08-01), Wang
patent: 4999750 (1991-03-01), Gammache
patent: 5331528 (1994-07-01), Chen
Lazarus Ira S.
Sember Thomas M.
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