Multipurpose external watch face illuminator

Details Multipurpose external watch face illuminator Multipurpose external watch face illuminator

1989-08-21

1990-11-20

Roskoski, Bernard

Horology: time measuring systems or devices

Displays or display device details

With auxiliary illumination for display

368 10, 368 67, G04B 1930

Patent

active

049723944

ABSTRACT:
A watch face illuminating device packaged inside a watchband and totally independent of any watch employs a bright and narrow beam of light to illuminate any type of watch by means of reflection of said beam from any reflective surface such as a finger or article of clothing. Electrical circuit means for connecting a battery power source to the light emitter contains a pushbutton switch and a timer for extinguishing the light source after a preset time period and a light emitter current regulator for more constant light emitter output to counter the effects of continuously decreasing voltage over the life of the battery. The device may also be employed in the manner of a small flashlight for illuminating tasks and objects close at hand.

REFERENCES:
patent: 1441069 (1923-01-01), Dandy
patent: 3018614 (1962-01-01), Brien
patent: 3025662 (1962-03-01), Fleishman et al.
patent: 3078364 (1963-02-01), Neugebauer
patent: 3116883 (1964-01-01), Neugebauer
patent: 3224184 (1965-12-01), Brien
patent: 3508044 (1970-04-01), Hochberg
patent: 3681587 (1972-08-01), Brien
patent: 4417819 (1983-11-01), Migeon

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