Back to results
US 4,985,877 AGranted
Electronic watch with moving member
AssigneeSeiko Instruments Inc.
InventorTooru Namisato
Life of this patent
Estimating the term…
Abstract
An analog type electronic watch having a step motor to drive hands has a movement indicator other than hands. The movement indicator has a magnet member and is driven with the magnetic influence of a rotor magnet of the step motor. The magnet member is arranged within a window provided in a dial plate of the watch within the range of the magnetic force of the rotor. The movement indicator is supported so as to be synchronously moved with the rotation of the rotor under the magnetic influence.
Claims17
In an electronic analog timepiece having a dial plate having a front face:
- a step motor having a rotor rotationally driven in a stepwise manner as a function of time, the rotor having at least two magnetic poles of opposite polarity which exert a magnetic force;
- a decorative magnetic member movably disposed within the range of influence of the magnetic force exerted by the rotor and disposed to be visible at the front face of the dial plate;
- and means mounting the decorative magnetic member to undergo movement within the range of influence of the magnetic force exerted by the rotor to enable the magnetic force exerted by the rotor to effect movement of the decorative magnetic member in response to stepwise rotation of the rotor.
Dependencies are inferred from the claim text.