Horology: time measuring systems or devices – Oscillating or reciprocating means – Balance wheel type
Reexamination Certificate
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
11360212
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.
Adam & Wilks
Paumen Gary F.
Seiko Instruments Inc.
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