Battery-driven watch with battery consumption display alarm

Details Battery-driven watch with battery consumption display alarm Battery-driven watch with battery consumption display alarm

1977-08-02

1978-05-23

Jackmon, Edith S.

Registers

Coded record sensors

Particular sensor structure

58 50R, 58152H, 235 92T, 340249, G04C 300, G04B 1930, G08B 2100

Patent

active

RE0296376

ABSTRACT:
The invention provides an advance alarm means incorporated with an electronic watch driven by a battery and fitted with a digital time display means.
There is provided a detector sensing an abrupt voltage drop at the source battery. A selector represents its two states corresponding to the normal operating condition of the battery and to the voltage dropped condition thereof, respectively. This selector controls the feed of two different signal series to at least one electrically illuminatable elements of the digital time display means, depending upon the state of the selector and for providing an advance alarm before occurrence of an unacceptable voltage drop in the source battery.

REFERENCES:
patent: 3562625 (1971-02-01), van der Broek et al.
patent: 3672155 (1972-06-01), Bergey et al.
patent: 3679965 (1972-07-01), Wilkinson
patent: 3691452 (1972-09-01), Aguiar

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