Flashlight marking implement

Details Flashlight marking implement Flashlight marking implement

1975-11-11

1977-06-07

Griffin, Donald A.

Buckles, buttons, clasps, etc.

401192, B43K 512, F21Y 3300

Patent

active

040285405

ABSTRACT:
A marking implement having a self-contained source of illumination arranged to project a beam of light encircling the marking point on a surface. Angular displacement of a switch actuator connects the illumination source to either an external source of electrical energy for prolonged energization or to internal batteries designed to provide electrical energy for shorter intervals. A plug-in device establishes the energizing circuit from the external source, by-passing the internal batteries.

REFERENCES:
patent: 1451654 (1923-04-01), Garcin
patent: 1516647 (1924-11-01), Saunders
patent: 1950789 (1934-03-01), Eells
patent: 1996563 (1935-04-01), Billings
patent: 2052501 (1936-08-01), Thornton
patent: 2261320 (1941-11-01), Williams
patent: 2407106 (1946-09-01), Shelly
patent: 2493796 (1950-01-01), Williams
patent: 3502859 (1970-03-01), Kochan

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