03-05-2012 дата публикации
Номер: US20120106303A1
Принадлежит:
A spiral spring () for the movement of a watch, includes a plurality of coplanar leaves () wound into one another. Furthermore, the inner ends of each leaf are rigidly connected to a single collet (). The leaves () and the collar () are produced as a single part. 114-. (canceled)15. A spiral spring of a watch movement , including a plurality of coplanar leaves wound into one another ,wherein the inner ends of each leaf being secured to a single collet,wherein the leaves, the collet are made monolithically, and wherein the outer ends of each leaf are connected to each other by a rigid frame provided with at least one portion to receive an attachment organ, said frame, the leaves and the collet being made monolithically, andwherein the last coil of the leaves includes a reinforcement arranged so as to bring the center of gravity of the active part to the action center of the elastic torque.16. The spiral spring according to claim 15 , including n leaves offset by 360°/n.17. The spiral spring according to claim 16 , wherein n is between 2 and 4 (bounds included).18. The spiral spring according to claim 15 , wherein the pitch of each leaf is constant.19. The spiral spring according to claim 16 , wherein the pitch of each leaf is constant.20. The spiral spring according claim 17 , wherein the pitch of each leaf is constant.21. The spiral spring according to claim 15 , wherein the pitch of each leaf is variable.22. The spiral spring according to claim 16 , wherein the pitch of each leaf is variable.23. The spiral spring according to claim 17 , wherein the pitch of each leaf is variable.24. The spiral spring according to claim 15 , wherein the frame includes wide zones and at least one slim zone claim 15 , said slim zone being intended to receive a balance-spring stud to attach the spiral spring to the watch movement.25. The spiral spring according to claim 16 , wherein the frame includes wide zones and at least one slim zone claim 16 , said slim zone being intended to ...
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