Timepiece comprising AM-PM indicating means

Patent metadata

Field	Value
Publication number	US-11513475-B2
Application number	US-202016998035-A
Country	US
Kind code	B2
Filing date	Aug 20, 2020
Priority date	Oct 4, 2019
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A timepiece including at least analogue time display device, and an AM-PM display device for displaying day-night information in the dial of the timepiece. The AM-PM display device includes at least two apertures made in the dial of the watch, a rotating display disc bearing at least one first series of inscriptions corresponding to the day and at least one second series of inscriptions corresponding to the night, these two display series being disposed on at least two concentric circles, and a drive mechanism arranged so as to automatically and alternately bring the first series of inscriptions inside a first aperture and the second series of inscriptions inside a second aperture by rotating the display disc.

First claim

The invention claimed is:

1. A timepiece comprising at least analogue time display means, and an AM-PM display device for displaying day-night information in the dial of said timepiece, the AM-PM display device comprising at least two apertures made in the dial of the watch, a rotating display disc bearing at least one first series of inscriptions corresponding to the day and at least one second series of inscriptions corresponding to the night, these two display series being disposed on at least two concentric circles, and a drive mechanism arranged so as to automatically and alternately bring said first series of inscriptions inside a first aperture and said second series of inscriptions inside a second aperture by rotating said display disc.

2. The timepiece according to claim 1 , wherein said display disc is off-centred relative to the time display means.

3. The timepiece according to claim 1 , wherein said display disc pivots about the time display means.

4. The timepiece according to claim 1 , wherein the first and second apertures are diametrically opposite one another relative to the time display means.

5. The timepiece according to claim 1 , wherein the AM/PM inscriptions of the first and second series of inscriptions are disposed along the same radius of the display disc.

6. The timepiece according to claim 1 , wherein the first and second series of inscriptions each comprise seven inscriptions, disposed every 360°/7.

7. The timepiece according to claim 1 , wherein said drive means comprise an hour wheel, a wheel with two fingers, and a fourteen-tooth star-wheel integral with said display disc, said star-wheel being arranged so as to cooperate with two diametrically opposite fingers integral with the hour wheel.

8. The timepiece according to claim 1 , wherein said display disc comprises a third series of inscriptions indicating the name of the day of the week displayed in a third aperture formed in the dial.

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Ruefenacht Christian

Classifications

• G04B19/04

  Hands; Discs with a single mark or the like {(moving indicating arrangements which have scales or numbers with stationary hands or reading means G04B19/20; optical projection of the position of the hands G04B19/34)} · CPC title

• G04B19/25 Primary

  Devices for setting the date indicators manually · CPC title

• G04B19/202 Primary

  by means of turning discs (disc-shaped indicating devices with a reference mark or a window G04B19/046; discs driven by clockwork and producing optical special effects G04B45/0007; with inscriptions or drawings driven by a clockwork G04B45/0023; with figures or parts of figures driven by clockwork G04B45/0038) · CPC title

• G04B19/08

  Geometrical arrangement of the graduations · CPC title

• G04B19/247

  disc-shaped {(G04B19/24306 takes precedence; for electrically driven timepieces G04C17/0058)} · CPC title