发明名称 Hairspring with two spiral springs
摘要 <p>The spring (37) has a hairspring (41) whose inner coil has a collet (40) arranged on a mounting structure (32). Another hairspring (43) is connected to the outer coil of the hairspring (41). An inner coil of the hairspring (43) has a device (47) for shifting the pinning point comprising a free end arranged to be secured to a balance spring stud in the plane of hairspring (43). The shifting device has a structure (42) connected to the inner coil through an u-shaped bend extending from the inner coil of the hairspring (43) to avoid providing elastic torque. An independent claim is included for movement structure.</p>
申请公布号 EP2570871(A1) 申请公布日期 2013.03.20
申请号 EP20110181307 申请日期 2011.09.14
申请人 MONTRES BREGUET SA 发明人 ROCHAT, JEAN-PHILIPPE
分类号 G04B17/32 主分类号 G04B17/32
代理机构 代理人
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