Electronic timepiece
AssigneeCitizen Watch Co., Ltd.
InventorYasuo Kamiyama
Life of this patent
Estimating the term…
Abstract
An electronic watch has a mechanical analog time-display with hour, minute and second hands. The watch has gear trains disposed in a portion adjacent the axis of the minute hand, and two motors disposed adjacent the gear train for driving the minute hand, hour hand and second hand. A stem is axially shiftably provided adjacent the gear train, and a lever assembly such as a setting lever, clutch lever and sliding clutch wheel is disposed adjacent the stem. A battery is disposed between the lever assembly and one of the motors, and a circuit chip is disposed between the motors.
Claims12
An electronic timpiece having a mechanical analog time-display with hour, minute and second hands, said minute hand rotating about an axis, said electronic timepiece comprising:
- a case;
- a circuit chip disposed in said case at a peripheral portion thereof;
- a crystal oscillator disposed at a peripheral portion of the case and adjacent said circuit chip;
- first and second motors disposed in said case adjacent said circuit chip at opposite sides thereof;
- a first gear train disposed between said first motor and said minute and hour hands for driving said minute and hour hands;
- a second gear train disposed between said second motor and said second hand for driving said second hand;
- supporting plates for supporting said first and second gear trains;
- an indicator hand;
- a third gear train for driving said indicator hand;
- said second motor, circuit chip and first gear train being disposed to form a space therebetween to enable positioning of said third gear train therein to facilitate driving of said indicator;
- a part of said supporting plates being extended into said space for supporting said indicator hand and third gear train;
- stem axially shiftably provided in said case adjacent said gear trains;
- a lever assembly disposed in said case adjacent the gear trains and operatively connected to the stem for changing the operational state of the timepiece;
- and
- a battery disposed in said case between said lever assembly and one of said motors.
Dependencies are inferred from the claim text.