Patent ID: 8356930

Claim:
A dynamometric device indicating the remaining barrel torque in a timepiece, which includes a plate, a barrel and a barrel ratchet arranged for cooperating with a ratchet click to keep, in a spring located inside said barrel, the mechanical energy stored by the latter, said ratchet click being able to pivot about a click pivot pin, between a meshed position wherein at least one tooth of said ratchet click cooperates with said barrel ratchet, and a disengaged position wherein each tooth of said ratchet click withdraws when the barrel ratchet rotates, as said barrel is being wound, said ratchet click being returned towards said barrel ratchet under the action of a ratchet click spring, said device being wherein it includes a strip spring including a resilient arm a first end of which is rigidly secured to said plate or to a fixed point relative thereto, wherein said click pivot pin is mounted on a click support, which is formed by said resilient arm or fixed thereto, and wherein said device includes, in proximity to a second end of said resilient arm opposite to said first end, an indicator member for displaying the barrel torque reserve, in conjunction with a graphic or graduated scale.