Apparatus for measuring the rate of an analog-display electronic

Details Apparatus for measuring the rate of an analog-display electronic Apparatus for measuring the rate of an analog-display electronic

1979-11-26

1981-10-06

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G04D 712

Patent

active

042928362

ABSTRACT:
An electronic measuring apparatus for measuring the rate of an analog-display electronic watch which comprises a quartz oscillator, a frequency divider with an adjustable division factor, a stepping motor and a circuit which, when the stem of the watch is pulled, produces a measuring signal emitted by the stray field of the coil of the stepping motor and comprising trains of pulses whose period and content are respectively representative of the frequency of the oscillator and the division factor. The measuring apparatus comprises a pick-up means for detecting said measuring signal, circuits for computing the rate of the watch and means for displaying said rate.

REFERENCES:
patent: 3864957 (1975-02-01), Fujita
patent: 3892124 (1975-07-01), Reese

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