Method and production support tooling for measuring the torque of a timepiece balance spring

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11921468
APP PUB NO 20200159171A1
SERIAL NO

16662222

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method for measuring the torque of a balance spring, made, in particular, of micromachinable material. A gripper places the collet on an insertion guide on the vertex of a mock obelisk-shaped arbor for a first centring of the collet, this balance spring is allowed to slide under its own weight along the guide surmounting a frustoconical shank that completes the self-centring of the collet on the tool axis, and for holding this balance spring without stress on the shank, the mock arbor including a drive device cooperating with the inner contour of the collet for the relative driving in rotation thereof without slipping, a holding tool holds the outer coil of the balance spring, to measure the torque of the balance spring by rotating the main tool and/or the holding tool about the axis, without stressing the balance spring.

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Patent Owner(s)

  • NIVAROX-FAR SA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Balossi, Joseph Villers-le-lac, FR 4 0
Cretenet, Davy La Chaux-de-Gilley, FR 10 11
Fahrni, Francois Le Locle, CH 1 0
Giusto, Nicola Le Locle, CH 2 2

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