Spring, mainspring, hairspring, and driving mechanism and...

Details Spring, mainspring, hairspring, and driving mechanism and... Spring, mainspring, hairspring, and driving mechanism and...

2005-03-08

2005-03-08

Cuneo, Kamand (Department: 2841)

Horology: time measuring systems or devices

Mechanical time base

Mainspring

C368S175000, C267S272000

Reexamination Certificate

active

06863435

ABSTRACT:
A mainspring used as a power source for a driving mechanism is made of an amorphous metal sheet, and has an S-shaped free-exploded shape. The curvature changing point, where the curving direction of the free-exploded shape changes is formed on the inner end side of a middle point between the inner end on the winding side and the outer end serving as the other end of the inner end. Because of the high tensile stress and a low Young's modulus, the amorphous metal permits increase in mechanical energy stored in the mainspring.

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