Balance spring stud-holder

Patent metadata

Field	Value
Publication number	US-9563175-B2
Application number	US-201514976312-A
Country	US
Kind code	B2
Filing date	Dec 21, 2015
Priority date	Dec 22, 2014
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

An assembly for holding or supporting a timepiece balance spring including a base provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged. The stud-holder secures the stud to an escapement mechanism.

First claim

What is claimed is:

1. An assembly for holding or supporting a timepiece balance spring including a cock provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged, wherein the stud-holder includes:
means for securing said stud to the cock, the means for securing said stud comprising an orifice traversing said cock and provided with a peripheral rim to form a housing for insertion of the stud, wherein said means for securing said stud also include a rotating element comprising attachment means for rotatable attachment thereof inside the housing, said rotating element having an outer edge cooperating with the stud to lock said stud between the outer edge of the rotating element and the peripheral rim of the housing when the rotating element is assembled in the housing, and wherein the peripheral rim or the rotating element is provided with a through notch in order to place the stud therein.

2. The holding assembly according to claim 1 , wherein said rotating element is a hub.

3. The holding assembly according to claim 2 , wherein the hub includes a shock absorber system.

4. The holding assembly according to claim 1 , wherein said rotating element is a ring.

5. An assembly for holding or supporting a timepiece balance spring including a cock provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged, wherein the stud-holder includes:
means for securing said stud to the cock, the means for securing said stud including a blind circular hollow formed by a bottom and a peripheral rim, arranged on the upper face of the cock forming a housing for insertion of the stud, wherein said means for securing said stud also include a rotating element comprising attachment means for rotatable attachment thereof inside the housing, said rotating element having an outer edge cooperating with the stud to lock the stud between the outer edge of the rotating element and the peripheral rim of the housing when the rotating element is assembled in the housing.

6. The holding assembly according to claim 5 , wherein said rotating element is a hub.

7. The holding assembly according to claim 5 , wherein said rotating element is a ring.

8. The holding assembly according to claim 7 , wherein the housing Lou circular hollow, formed of a peripheral rim, an inner rim and a bottom, in which the rotating element is inserted, the inner rim defining a central portion protruding from the bottom.

9. The holding assembly according to claim 8 , wherein the inner rim is provided with a through notch cooperating with a hole located in the housing bottom in order to place the stud therein.

10. The holding assembly according to claim 5 , wherein the peripheral rim is provided with a through notch in order to place the stud therein.

11. The holding assembly according to claim 5 , wherein said rotating element is provided with a through notch cooperating with a hole located in the housing bottom in order to place the stud therein.

12. The holding assembly according to claim 5 , wherein the bottom of the housing includes a shock absorber system.

13. An assembly for holding or supporting a timepiece balance spring including a cock provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged, wherein the stud-holder includes:
means for securing said stud to the cock, the means for securing said stud including a blind circular hollow formed by a bottom and a peripheral rim, arranged on the lower face of the cock forming a housing for insertion of the stud, wherein said means for securing said stud also include a rotating element comprising attachment means for rotatable attachment thereof inside the housing, said rotating element having an outer edge cooperating with the stud to lock the stud between the outer edge of the rotating element and the peripheral rim of the housing when the rotating element is assembled in the housing.

14. The holding assembly according to claim 13 , wherein said rotating element is a hub.

15. The holding assembly according to claim 14 , wherein the hub includes a shock absorber system.

16. The holding assembly according to claim 13 , wherein said rotating element is a ring.

17. The holding assembly according to claim 16 , wherein the housing is a circular hollow, formed of a peripheral rim, an inner rim and a bottom, in which the rotating element is inserted, the inner rim defining a central portion protruding from the bottom.

18. The holding assembly according to claim 17 , wherein the inner rim is provided with a notch in order to place the stud therein.

19. The holding assembly according to claim 18 , wherein the central portion includes a shock absorber system.

20. The holding assembly according to claim 16 , wherein the bottom of the housing includes a shock absorber system, a balance staff passing through the ring acting as a rotating element.

21. The holding assembly according to claim 13 , wherein the peripheral rim is provided with a notch in order to place the stud therein.

22. The holding assembly according to claim 13 , wherein said rotating element is provided with a notch in order to place the stud therein.

23. An assembly for holding or supporting a timepiece balance spring including a cock provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged, wherein the stud-holder includes:
means for securing said stud to the cock, the means for securing said stud comprising an orifice traversing said cock and provided with a peripheral rim to form a housing for insertion of the stud, wherein said means for securing said stud also include a rotating element comprising attachment means for rotatable attachment thereof inside the housing, said rotating element having an outer edge cooperating with the stud to lock said stud between the outer edge of the rotating element and the peripheral rim of the housing when the rotating element is assembled in the housing, and
wherein the peripheral rim includes at least one cavity comprising a countersink perpendicular to the plane of a base and open relative to the upper surface, and, secant with said countersink and opposite the upper surface, a blind slot used to lock the rotating element in a bayonet fitting, said rotating element including at least one protruding portion cooperating with said at least one cavity.

24. An assembly for holding or supporting a timepiece balance spring including a cock provided with an upper surface and a lower surface on which a balance spring stud and a stud-holder are arranged, wherein the stud-holder includes:
means for securing said stud to the cock, the means for securing said stud comprising an orifice traversing said cock and provided with a peripheral rim to form a housing for insertion of the stud, wherein said means for securing said stud also include a rotating element comprising attachment means for rotatable attachment thereof inside the housing, said rotating element having an outer edge cooperating with the stud to lock said stud between the outer edge of the rotating element and the peripheral rim of the housing when the rotating element is assembled in the housing, and
wherein the peripheral rim and the rotating element each include a screw pitch enabling them to cooperate with each other.

Assignees

• Eta Sa Mft Horlogere Suisse
• Eta Sa Mft Horlogere Sueisse

Inventors

• Christan Julien
• Kaelin Laurent
• Villar Ivan
• Conus Thierry

Classifications

• G04B37/05 Primary

  Fixed mountings for pocket or wrist watches · CPC title

• G04B43/002

  Component shock protection arrangements (shock damping bearings G04B31/02; shock-damping in the case G04B37/04; protection of the pendulum or chime during transport G04B41/00) · CPC title

• G04B17/325 Primary

  for fastening the hairspring in a fixed position, e.g. using a block · CPC title