Device for selection of a combination of motifs, and timepiece comprising a device of this type

Patent metadata

Field	Value
Publication number	US-11126141-B2
Application number	US-201816169396-A
Country	US
Kind code	B2
Filing date	Oct 24, 2018
Priority date	Nov 16, 2017
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

A device for selection of a combination of motifs for a timepiece, including an inner disc, and a coaxial outer disc, the inner disc having a smaller diameter than the outer disc, the discs including angular sectors of the same size, at least two angular sectors of each disc bearing a motif on their periphery; a device for actuation permitting rotation of the inner disc, and a gear device for coupling the two discs according to a reduction ratio; a dial extending opposite the inner disc, the dial including an aperture to put a motif of the inner disc and a motif of the outer disc into correspondence, such that a complete rotation of the inner disc gives rise to a rotation of the outer disc by one angular sector, the size of the aperture being sufficiently large for each motif of the outer disc to be in correspondence successively with all the motifs of the inner disc, when the inner disc is rotated.

First claim

The invention claimed is:

1. A device for a timepiece, comprising:
a first disc, known as an inner disc, and a second disc, known as an outer disc, which are coaxial, the inner disc having a smaller diameter than the outer disc, the discs comprising a plurality of angular sectors of a same size, at least two angular sectors of each disc bearing a motif on their periphery;
means for actuation that drive the inner disc, and gear means coupling the two discs such that the outer disc is driven by the inner disc according to a reduction ratio;
a dial extending opposite the inner disc, the dial comprising an aperture making it possible to put one of the motifs of the inner disc and one of the motifs of the outer disc into correspondence,
the device being such that a complete rotation of the inner disc gives rise to a rotation of the outer disc by one angular sector, the size of the aperture being sufficiently large for each motif of the outer disc to be in correspondence successively with all the motifs of the inner disc, when the inner disc is rotated.

2. A device for a timepiece, comprising:
a first disc, known as an inner disc, and a second disc, known as an outer disc, which are coaxial, the inner disc having a smaller diameter than the outer disc, the discs comprising a plurality of angular sectors of a same size, at least two angular sectors of each disc bearing a motif on their periphery;
means for actuation that drive the outer disc, and gear means coupling the two discs such that the outer disc drives the inner disc according to a multiplication ratio;
a dial extending opposite the inner disc, the dial comprising an aperture so as to put one of the motifs of the inner disc and one of the motifs of the outer disc into correspondence,
wherein a rotation of the outer disc by one angular sector gives rise to a complete rotation of the inner disc, the size of the aperture being sufficiently large for each motif of the outer disc to be in correspondence successively with all the motifs of the inner disc, when the outer disc is rotated.

3. The device according to claim 1 , wherein each angular sector of the outer disc bearing one of the motifs is preceded and followed by an angular sector bearing a space without any of the motifs.

4. The device according to claim 1 , wherein the inner disc bears at the most four motifs, and advantageously two or three.

5. The device according to claim 1 , wherein at least one angular sector of the inner disc bears a space without any of the motifs.

6. The device according to claim 1 , wherein the motifs of the inner disc are disposed on consecutive angular sectors, a first motif and a final motif of the motifs of the inner disc being separated by at least one angular sector bearing a space without any of the motifs.

7. The device according to claim 1 , comprising a single motor in order to actuate the inner and outer discs together via the gear means and the means for actuation.

8. A timepiece comprising:
a first disc, known as an inner disc, and a second disc, known as an outer disc, which are coaxial, the inner disc having a smaller diameter than the outer disc, the discs comprising a plurality of angular sectors of a same size, at least two angular sectors of each disc bearing a motif on their periphery;
means for actuation that drive the inner disc, and gear means coupling the two discs such that the outer disc is driven by the inner disc according to a reduction ratio;
a dial extending opposite the inner disc, the dial comprising an aperture making it possible to put one of the motifs of the inner disc and one of the motifs of the outer disc into correspondence,
the device being such that a complete rotation of the inner disc gives rise to a rotation of the outer disc by one angular sector, the size of the aperture being sufficiently large for each motif of the outer disc to be in correspondence successively with all the motifs of the inner disc, when the inner disc is rotated,
wherein the timepiece does not include a display screen.

9. The device according to claim 1 , wherein the means for actuation include a first rod, a third disc to be driven by the first rod, and a first pinion that engages with the third disc and is integral in rotation with the inner disc.

10. The device according to claim 9 , wherein the gear means include the first pinion, the third disc, a second pinion that is integral in rotation with the first disc, and a fourth disc that engages with the second pinion and is integral in rotation with the outer disc.

11. The device according to claim 2 , wherein the means for actuation include a second rod, a fifth disc to be driven by the second rod, and a third pinion that engages with the fifth disc and is integral in rotation with the outer disc.

12. The device according to claim 11 , wherein the gear means include the third pinion, the fifth disc, a fourth pinion that is integral in rotation with the third disc, and a sixth disc that engages with the fourth pinion and is integral in rotation with the inner disc.

Assignees

• Eta Sa Mft Horlogere Suisse

Inventors

• Lagorgette Pascal

Classifications

• G04B19/25333 Primary

  wherein the date indicators are driven or released mechanically by a clockwork movement · CPC title

• G04B19/202

  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

• G04B47/00

  Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece ({clockwork cases for special purposes G04B37/12; clocks with magnifying glass built in the face G04B39/00; time-pieces in which parts or cases produce special effects, e.g. aesthetic effects, G04B45/00, particularly with inscriptions or pictures moved by hand G04B45/003, with specially shaped cases or parts G04B45/0069; combination of} writing or drawing implements with devices for indicating time B43K29/087; combined with cameras, projectors, or photographic printing apparatus G03B29/00) · CPC title

• G04C3/14 Primary

  incorporating a stepping motor (G04C3/02 - G04C3/12 take precedence {; generating commutating pulses in primary clocks G04C13/0463}) · CPC title

• G04B19/046

  Indicating by means of a disc with a mark or window (for simultaneous indicating G04B19/048) · CPC title