Timepiece movement

Details Timepiece movement Timepiece movement

1997-10-20

1999-07-27

Miska, Vit

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368220, G04B 1904, G04B 1902

Patent

active

059302054

ABSTRACT:
A timepiece movement comprises a light-emitting device for emitting light and a light-receiving device for receiving the light emitted from the light-emitting device. An hour wheel has a plurality of apertures through which light from the light-emitting device may pass. A minute wheel has an aperture through which light from the light-emitting device may pass, the aperture being positioned to become aligned with respective ones of the apertures of the hour wheel during rotation of the minute and hour wheels. Minute and hour wheel gear trains respectively rotate the minute wheel and the hour wheel as a function of minute and hour time.

REFERENCES:
patent: 4645357 (1987-02-01), Allgaier et al.
patent: 5231612 (1993-07-01), Allgaier et al.
patent: 5566140 (1996-10-01), Kohata et al.

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