Wristwatch

Details Wristwatch Wristwatch

1992-04-08

1994-01-11

Roskoski, Bernard

Horology: time measuring systems or devices

Power supply details

Electrical

368 64, 368179, G04B 2712, G04C 300

Patent

active

052788067

ABSTRACT:
A capacitor, which is charged up by induction currents generated in coils, is used as the current source of the wristwatch. To this end, a rotor, which can rotate about the center of the housing, is provided whose circumferential zone lies in an annular space surrounding the watch mechanism and supports a plurality of coils which are distributed uniformly and are electrically connected in parallel. Attached in the annular space are a plurality of permanent magnet pairs whose magnets are in each case located opposite, separated from one another, and between which the coils oscillate, which coils are connected via annular contact tracks on the rotor and contact springs to a rectifier, via which the capacitor is charged up. The permanent magnets are seated on the circumferential region of a base plate consisting of soft iron, whose central region has a pot-shaped depression for holding the watch mechanism.

REFERENCES:
patent: 3803433 (1974-04-01), Ingenito
patent: 4644246 (1987-02-01), Knapen

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