BALANCE FOR TIMEPIECE MOVEMENT

Abstract

The balance comprising a felloe (3), arms (4) connecting the felloe (3) to the balance staff and inertia blocks (11) is characterized in that the felloe (3) includes studs (7) in its inner surface, a threaded hole (9) into which said inertia blocks (11) are screwed from the inside, without passing beyond the external surface of the felloe (3), passing through said felloe (3) and said studs (7).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other peculiarities of the invention will appear in the following description of-an embodiment of a balance for a watch movement, given by way of non-limiting example with reference to the annexed drawings, in which:

FIG. 1 is a perspective view of the balance, and

FIG. 2 is an enlarged view of an inertia block.

Claims

1. A Balance for a timepiece movement including a felloe, arms connecting the felloe to the balance staff and inertia blocks for adjusting the unbalance and regulating the moment of inertia, wherein the felloe includes studs directed inwards, a threaded hole into which said inertia blocks are screwed from the inside, passing through said felloe and said studs.

2. The balance according to claim 1, wherein the studs are directed radially inwards.

3. The balance according to claim 1, wherein the studs are arranged on the inner surface of the balance felloe.

4. The balance according to claim 1, wherein the studs are arranged on one of the frontal surfaces of the balance felloe.

5. The balance according to claim 1, wherein the length of the thread corresponds to the maximum travel of the inertia blocks defined by the width of the studs and the felloe, without passing beyond the exterior of the felloe.

6. The balance according to claim 1, wherein the studs are arranged between the arms.

7. The balance according to claim 1, wherein the studs are arranged in recesses provided in the arms.

8. The balance according to claim 2, wherein the studs are arranged on the inner surface of the balance felloe.

9. The balance according to claim 2, wherein the studs are arranged on one of the frontal surfaces of the balance felloe.