Electronic chronograph watch

Abstract

Abstract PCT No. PCT/CH82/00128 Sec. 371 Date Aug. 16, 1983 Sec. 102(e) Date Aug. 16, 1983 PCT Filed Dec. 3, 1982 PCT Pub. No. WO83/02340 PCT Pub. Date Jul. 7, 1983.The liquid crystal display cell (21) indicates the date in an aperture situated at 12 o'clock. The hour wheel (31) and the center wheel (29) present coaxial pipes which pass through the dial and bear hour and minute hands. These wheels are driven by a wheel-train (30, 28, 27) actuated by the stepping motor (25) which receives its pulses from the circuit (23) controlled at a frequency of 1 Hz for example by the quartz (48). The 24-hour wheel (33) bears a contact element (46) which, once per revolution, grounds the terminal (47). The pulse which results therefrom is transmitted to a counter incorporated in the circuit (23). This counter controls the decoding circuit which controls the display cell (21). To effect the setting of the date, the stem (35) is brought into its intermediate position (II). The contact element (40) borne by the yoke (38) then grounds the terminal (41), which causes in the circuit (23) the emission of pulses at a frequency of 1 Hz which controls a repeated and rapid change of date.

Inventors

• 👤 Albert Piguet
• 👤 Jean-Daniel Dubois

Bibliographic Details