Ultra-flat electronic watch

Details Ultra-flat electronic watch Ultra-flat electronic watch

1979-09-06

1983-05-10

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368233, G04B 1920

Patent

active

043826903

ABSTRACT:
The watch of the invention contains a power cell 46, a quartz crystal 44, a step-by-step motor 42, a gear train 32 and a device for the analog display of the time constituted by two coaxial discs provided with index marks 24, 26 and each having external teeth so that they can be driven by the gear train. These components are all located inside a casing 10, 12 with a transparent window 14 and whose back acts as a bottom plate. All "thick" elements of the watch (cell 46, crystal 44, motor 42, gear train 32) are outside the periphery of the discs without overlapping, when viewed in a direction perpendicular to the front plate of the watch, and are partially recessed into the underside of the rim 12 of the casing. The integrated circuit 50 may be hidden by the discs or also outside their periphery.

REFERENCES:
patent: 2248195 (1941-07-01), Prins
patent: 2582797 (1952-01-01), Rosfelder
patent: 2852908 (1958-09-01), Stern et al.
patent: 3587223 (1971-06-01), Zatsky
patent: 4087957 (1978-05-01), Miyasaka et al.

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