Title:
ELECTRONIC TIMEPIECE
Document Type and Number:
Japanese Patent JPH01176974
Kind Code:
A
Abstract:
PURPOSE:To easily obtain various pieces of data information on temperature by generating a phase difference between a 1st time display means which is not affected by various natural environmental conditions and a 2nd time display means across a viscous fluid with dependency. CONSTITUTION:When a rotor 4 rotates by 180 deg. in each second according to a driving signal from an electric circuit, a main moving wheel 6a advances a hand intermittently by 6 deg. in every second. The intermittent stepping second hand 16 fitted to the wheel 6a indicates second graduation positions printed on a dial 17. Silicone oil 15 varies in viscosity with temperature. For example, when the temperature drops, the viscosity of the silicone oil 15 becomes large and load torque also increases; and a winding force for a hairspring 6c is also required and the rotation of a second wheel 9 is slowed down by the step of the wheel 6a required for the winding. The indication of the hand 10 fixed on the wheel 9 is delayed behind the indication of the second hand 16. For the purpose, this phase difference is known to obtain temperature variation as data. Further, other control members are combined to obtain various data.
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Inventors:
AOKI SHIGERU
Application Number:
JP58088A
Publication Date:
July 13, 1989
Filing Date:
January 05, 1988
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G04C3/14; G01D21/00; G04C3/00; (IPC1-7): G01D21/00; G04C3/00; G04C3/14
Attorney, Agent or Firm:
Mogami (1 person outside)