Thin stepping motor watch

Details Thin stepping motor watch Thin stepping motor watch

G - Physics

04

B

58/24

G04B 37/00 (2006.01) G04C 3/00 (2006.01) G04C 17/00 (2006.01)

Patent

CA 1171668

PI-838 WUTHRICH THIN STEPPING MOTOR WATCH ABSTRACT A quartz analog watch has a disc with a minute hand thereon driven directly at its periphery by the rotor of a stepping motor. A single intermediate gear and pinion assembly performs a gear reduction to drive a conventional hour hand rotatably mounted on a center spindle which also supports the minute disc. The stepping motor watch internal components, including battery, stepping motor, intermediate gear assembly and integrated circuit are all partially hidden beneath the minute disc. A special watch crystal functions also as a top frame member controlling "endshake" of the movement members in conjunction with the caseback. A special metal clip provides a push button contact for electrically setting the watch and also holds the intermediate gear assembly in place.

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