LED flashlight

Details LED flashlight LED flashlight

2006-12-26

2006-12-26

Ward, John Anthony (Department: 2875)

Illumination

Self powered lamp

Cylindrical flashlight casing

C362S206000, C362S202000

Reexamination Certificate

active

07152994

ABSTRACT:
An LED flashlight having a structure of switch for which the housing of the flashlight comprises a cylinder and a rotating member mutually connected by means of an outer and an inner screw thread section, the cylinder and the rotating member thus rotate relatively to each other. When the rotating member so rotates, it moves an elastic piece having a number of P typed arms; the inner wall of the cylinder has at a position contacting protruding portions of the P typed arms an annular recess. When in circuit breaking of the flashlight, the protruding portions of the arms are exactly located in the annular recess and thereby is in a state of none contact; and when the rotating member rotates relatively to the cylinder, the rotating member moves the elastic piece axially to make the protruding portions move over the annular recess to contact the inner wall, thus the LED is turned on to emit light for illumination. With the design of the switch having the annular recess and the protruding portions of the P typed arms, illuminating and extinguishing of the flashlight can get controlled just by slightly rotating the rotating member.

REFERENCES:
patent: 5091611 (1992-02-01), Reeves et al.
patent: 5629105 (1997-05-01), Matthews
patent: 6398383 (2002-06-01), Huang

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