SPRING BALANCE FOR CLOCK Russian patent published in 2017 - IPC G04B17/06 

FIELD: physics.

SUBSTANCE: clock unit (1) including a balance spring column (3) attached to the platinum (2) and a balance spring (4) wound (6) around the inner end (7) of the shoe (9), and the outer end (8) made integral with the above-mentioned column (3) of the balance spring. The above-mentioned column (3) of the balance spring and/or the above-mentioned shoe (9) includes brake means (10) for interacting with at least the first winding (61) during the accelerations caused by compression or expansion of the above balance spring (4), which are larger than the setpoints set, to change the resultant stiffness of the aforementioned balance spring (4) when at least the above-mentioned first coil (61) is locally connected to the above-mentioned braking means (10), positioned on the first inner tab (16; 19) and the second outer tab (17; 97) contained in the above-mentioned column (3) of the balance spring and/or in the above-mentioned shoe (9), which includes a first inner tab (96) and The second outer tongue (97), each of which includes the above-mentioned brake means (10).

EFFECT: increasing the reliability.

19 cl, 5 dwg