Electronic clock
AssigneeSeiko Clock Inc.
InventorHiroyuki SATO
Life of this patent
Estimating the term…
Abstract
An electronic clock includes: a drive source; a second hand wheel secured with a second hand, and rotated by receiving drive force from the drive source; a connection wheel rotated by receiving a drive force from the second hand wheel; an adjustment wheel adjusting positions of a minute hand and an hour hand, and a minute hand pipe secured with the minute hand, slidably connected with the connection wheel, and including a teeth portion to which drive force is transmitted from the adjustment wheel, and the minute hand pipe slidably rotating with respect to the connection wheel when the minute hand pipe receives the drive force from the adjustment wheel.
Claims4
An electronic clock comprising:
- a drive source;
- a second hand wheel secured with a second hand, and rotated by receiving drive force from the drive source;
- a connection wheel rotated by receiving a drive force from the second hand wheel;
- an adjustment wheel adjusting positions of a minute hand and an hour hand;
- a minute hand pipe secured with the minute hand, slidably connected with the connection wheel, and including a teeth portion to which drive force is transmitted from the adjustment wheel, and the minute hand pipe slidably rotating with respect to the connection wheel when the minute hand pipe receives the drive force from the adjustment wheel;
- an internal clock measuring an elapsed period based on a reference signal from a reference signal source;
- a receiver receiving a standard radio wave including time information;
- and
- a control unit outputting a drive pulse to the drive source, and performing correction process for synchronizing output timing of the drive pulse with rising timing of a pulse signal at one-second intervals of the standard radio wave.
Dependencies are inferred from the claim text.