Hairspring for oscillator balance of a clock piece and method for manufacturing same

摘要

The hairspring has leaf (2) that is provided with specific thickness and height. The leaf is comprised with several apertures (3) extending in height-wise direction and bridges (5) that are provided at apertures in alternate manner. The apertures are distributed over entire length of leaf. Equidistant portions (4) joined to one another are comprised in leaf and separated by apertures. The leaf is made of silicon, quartz and diamond. Core of leaf is made of silicon, and external material of leaf is made of silicon dioxide. An independent claim is included for method of manufacturing hairspring.