Clock with a mainspring wound state indicator

Patent 6166999 Issued on December 26, 2000. Estimated Expiration Date:

November 29, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

588373

1191525

Ultra-flat self-winding watch
Patent #: 4500213
Issued on: 02/19/1985
Inventor: Grimm

Timepiece having a power reserve indicator
Patent #: 5699322
Issued on: 12/16/1997
Inventor: Born

Timepiece comprising a mechanism driven by mechanical driving means and a power reserve indicating device Patent #: 5828628
Issued on: 10/27/1998
Inventor: Born, et al.

Inventors

Assignee

Seiko Instruments Inc.

Application

No. 367882 filed on 11/29/1999

US Classes:

368/66, With power monitor368/203POWER SUPPLY DETAILS

Examiners

Primary: Miska, Vit W.

Attorney, Agent or Firm

Adams & wilks

Foreign Patent References

261346 FR. 11/13/1896
1066074 FR. 06/13/2012
43-24870 JP. 10/13/1968
4-216490 JP. 08/13/1992
9-21886 JP. 01/13/1997

International Classes

G04B 009/00
G04B 001/10
G04B 001/00

Foreign Application Priority Data

1997-12-22 JP

Abstract

To reduce a number of parts constituting a spring winding state display device and downsize a movement, a device including a first sun wheel installed with a first sun wheel gear 152 and a first sun wheel arbor 154. A second sun wheel 160 is provide with a second sun wheel gear 162 and a second sun wheel pinion 164. The second sun wheel gear 162 is in mesh with an intermediate ratchet wheel 140. A planetary reduction wheel gear 170 is in mesh with a barrel gear 126. A first planetary wheel 172 and a second planetary wheel 174 are rotatably arranged to a planetary reduction wheel gear 170 with centers of rotation thereof disposed at portions different from a center of rotation of the planetary reduction wheel gear 170. The first planetary wheel 172 rotates while revolving around the second sun wheel pinion 164. The second planetary wheel 174 rotates while revolving around the first sun wheel gear 152. A sun wheel finger 180 is attached to a third axle portion 154c such that it can slip.