Variable light beam flashlight

Details Variable light beam flashlight Variable light beam flashlight

1989-08-28

1990-08-14

Husar, Stephen F.

Illumination

Self powered lamp

Cylindrical flashlight casing

362183, 362205, 362188, F21L 700

Patent

active

049492314

ABSTRACT:
A flashlight includes a tube; a control ferrule with an inner helical groove being rotatably disposed on the front portion of the tube; a face cap with a lens and a reflector being provided on the front end of the front portion; and one or more batteries being disposed within the tube. A socket with two conductors respectively connected to two prongs of a light bulb is slidably disposed within the front portion of the tube. A pin couples the socket to the control ferrule so that the socket is guided to move along the guide holes of the tube by the relative movement between the pin and the control ferrule. A sleeve is disposed on one end of a tail cap for engaging into a rear end of the tube. A small gap separates the sleeve and the tail cap. A spring member is disposed between the tail cap and the battery so as to urge the tail cap not to electrically connect to the tube. An intermittent gentle pressure on the tail cap causes the tail cap intermittently connected with the tube and produces an intermittent lighting of the light bulb.

REFERENCES:
patent: 4733337 (1988-03-01), Bieberstein
patent: 4777582 (1988-10-01), Sharrah
patent: 4823242 (1989-04-01), Maglica et al.

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