Pickup for measuring the rate of an electronic timepiece

Details Pickup for measuring the rate of an electronic timepiece Pickup for measuring the rate of an electronic timepiece

1975-10-21

1977-06-21

Ruehl, Charles A.

Measuring and testing

Instrument proving or calibrating

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

G04D 712

Patent

active

040303373

ABSTRACT:
Pickups for the measurement of the accuracy of electronic timepieces are closed. The pickups each include an induction-winding detector and an integrated-circuit frequency divider which is the same as the integrated-circuit frequency divider of timepieces to be measured therewith. The pickups are useful as accessories for chrono-comparators which are normally used to measure the accuracy of mechanical, or sonic, frequency timepieces. Individual ones of these pickups are used to test timepieces of different frequencies by a simple substitution of pickups.

REFERENCES:
patent: 3395566 (1968-08-01), Jucker
patent: 3777547 (1973-12-01), Izumi et al.
patent: 3857274 (1974-12-01), Desarzens et al.
patent: 3892124 (1975-07-01), Reese
patent: 3946591 (1976-03-01), Yanagawa et al.

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