Rotating head switch mechanism for flashlight

Details Rotating head switch mechanism for flashlight Rotating head switch mechanism for flashlight

1984-09-13

1986-04-08

Nelson, Peter A.

Illumination

Self powered lamp

Cylindrical flashlight casing

362205, 362186, F21L 900

Patent

active

045816867

ABSTRACT:
The present invention relates to a flashlight assembly having a rotatable head which acts as a switch mechanism for turning the light on or off.
The flashlight has an elongated metal housing, and the rotatable head is also made of metal. A spacer member made of an electrical insulating material is securely attached to the head member. The spacer member threadedly engages threads formed on the housing. Thus, there is normally no electrical continuity between the metal head member and the metal housing. However, when the head member is rotated in a tightening direction, a flat annular face on the head member comes into mating engagement with a similar face on the housing, thus establishing electrical continuity between those two members and completing the internal electrical circuit of the flashlight.

REFERENCES:
patent: 2852633 (1958-09-01), Garland
patent: 2912567 (1959-11-01), Dulberg
patent: 4156893 (1979-05-01), Baake
patent: 4234913 (1980-11-01), Ramme
patent: 4398238 (1983-08-01), Nelson

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