Device for adjusting the length of a bracelet

Patent metadata

Field	Value
Publication number	US-10722006-B2
Application number	US-201715830703-A
Country	US
Kind code	B2
Filing date	Dec 4, 2017
Priority date	Dec 5, 2016
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

Device for adjusting the length of a bracelet, having a guidance and fastening system (10, 30, 40, 50), including at least one adjusting link element (23) mounted with the ability to rotate about an axis of rotation (A1) defined by a guidance device of the guidance and fastening system. The guidance and fastening system (10, 30, 40, 50) includes an elastic fastening device comprising an elastic property in order to perform an elastic fastening function. The two guidance and elastic fastening devices are arranged around the axis (A1), notably upon implementation of the fastening function. The elastic fastening device provides elastic immobilization of an end link element (25) connected to the adjusting link element (23), particularly relative elastic immobilization of the said end link element (25) with respect to the adjusting link element (23), or of the adjusting link element (23), in at least one configuration of the adjustment device.

First claim

The invention claimed is:

1. A device for adjusting the length of a bracelet, comprising:
a guidance and fastening system comprising:
a guidance device,
at least one adjusting link element mounted with the ability to rotate about an axis of rotation defined by the guidance device, and
an elastic fastening device having an elastic property in order to perform an elastic fastening function,

wherein the guidance device and the elastic fastening device are arranged around the axis of rotation, and
wherein the elastic fastening device provides elastic immobilization of an end link element connected to the adjusting link element in at least one configuration of the adjustment device, the end link element collaborating with the elastic fastening device which elastically immobilizes the end link element with respect to the adjusting link element.

2. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device and the elastic fastening device are able to perform their respective functions independently of one another.

3. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device and the elastic fastening device extend coaxially along the axis of rotation.

4. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device and the elastic fastening device are formed at least in part of distinct components.

5. The device for adjusting the length of a bracelet according to claim 1 , wherein the elastic fastening device comprises a spring.

6. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device comprises at least one bar.

7. The device for adjusting the length of a bracelet according to claim 1 , wherein
the guidance device comprises a bar forming a guide surface over at least part of a periphery thereof, and in a lateral region of the guidance and fastening system, and
the elastic fastening device comprises a spring tube arranged in a central part of the guidance and fastening system and arranged around the bar, the spring tube being capable of elastic movement towards the bar, without touching the bar, in order to perform the elastic fastening function.

8. The device for adjusting the length of a bracelet according to claim 1 , wherein
the guidance device comprises a bar comprising at least one guide surface on a lateral part of the guidance and fastening system, and
the elastic fastening device comprises a ball able to move parallel to the axis of the bar under the effect of a preloaded spring housed in a hollow volume of the bar, the ball being able to project from the bar.

9. The device for adjusting the length of a bracelet according to claim 8 , wherein the bar has two ends and comprises a stud, arranged at one of the two ends, to make the stud capable of connecting an adjusting link element to a clasp cover, and the bar has an exterior periphery forming a guide surface capable of guiding an adjusting link element in pivoting movement with respect to a clasp cover.

10. The device for adjusting the length of a bracelet according to claim 1 , wherein the device comprises a bar having at least one guide surface on a peripheral surface and two balls, one central and one lateral, able to move parallel to the axis of the bar at each end of the bar under the effect of a one same preloaded spring and a stop which are housed in a hollow volume of the bar, the balls being able to project from the bar.

11. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device comprises a bar comprising an end capable of connection with a clasp cover by pads and/or a stud and the guidance device has an exterior periphery forming a guide surface able to guide the adjusting link element with respect to the clasp cover.

12. Device for adjusting the length of a bracelet according to claim 11 , wherein the guidance device comprises a guide surface able to guide the adjusting link element in rotation and/or approximately in translation with respect to the clasp cover.

13. The device for adjusting the length of a bracelet according to claim 1 , wherein the adjusting link element comprises a second pivot pin having a second axis of rotation distinct from the axis of the rotation of the guidance and fastening system about which an end link element of a bracelet is arranged.

14. The device for adjusting the length of a bracelet according to claim 13 , wherein (i) the end link element comprises at least one notch which compresses a spring tube of the guidance and fastening system in order to achieve elastic fastening thereof, or (ii) at least one wall of the end link element comprises a notch which comes into engagement with a ball preloaded by a spring in order to achieve elastic fastening thereof.

15. The device for adjusting the length of a bracelet according to claim 13 ,
wherein the end link element comprises at least one notch which compresses a spring tube of the guidance and fastening system in order to achieve elastic fastening thereof,
wherein the guidance device of the guidance and fastening system comprises a bar comprising a guide surface collaborating with the at least one adjusting link element in order to guide the pivoting thereof, and
wherein the spring tube has, at at least one of ends thereof, a portion provided with a guide surface, which is placed to collaborate with a complementary guide surface belonging to the at least one adjusting link element so that the spring tube is independent of the bar and vice versa.

16. The device for adjusting the length of a bracelet according to claim 15 , wherein the at least one adjusting link element comprises a bore that is open-ended for housing the bar and another bore forming the complementary guide surface and accommodating one end of the spring tube.

17. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device is arranged inside an adjusting link element and wherein the elastic fastening device is arranged within an end link element so that the guidance device and the elastic fastening device are aligned on the axis of rotation which is a transverse axis, in a position of mutual fastening of the guidance device and the elastic fastening device.

18. A deployment clasp for bracelet, wherein the clasp comprises at least one adjustment device according to claim 1 .

19. A bracelet, wherein the bracelet comprises a deployment clasp according to claim 18 .

20. A wristwatch wherein the wristwatch comprises at least one bracelet according to claim 19 .

21. The device for adjusting the length of a bracelet according to claim 1 , wherein the guidance device and the elastic fastening device are arranged around the axis of rotation upon implementation of the elastic fastening function.

Assignees

• Rolex Sa

Inventors

• Christian Martin
• Di Piazza Philippe
• Grivet Teddy

Classifications

• A44C5/246 Primary

  having size adjusting means · CPC title