Speed control mechanism and mechanical timepiece having the...

Details Speed control mechanism and mechanical timepiece having the... Speed control mechanism and mechanical timepiece having the...

2008-04-01

2008-04-01

Paumen, Gary F. (Department: 2833)

Horology: time measuring systems or devices

Oscillating or reciprocating means

Balance wheel type

C368S127000

Reexamination Certificate

active

07350967

ABSTRACT:
A speed control mechanism has a balance with hairspring mounted to undergo oscillation movement and a regulator structure for adjusting a position of the balance with hairspring. The regulator structure is formed of a nonmagnetic material to prevent reduction of an oscillation angle of the balance with hairspring during oscillation movement thereof.

REFERENCES:
patent: 6554468 (2003-04-01), Manaka et al.
patent: 2002/0167865 (2002-11-01), Tokoro et al.

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