US 6,406,176 B1 · Chronograph timepiece

Abstract

A chronograph timepiece has a barrel mounted for undergoing rotation and a front train wheel for undergoing rotation in accordance with rotation of the barrel. A second counter intermediate wheel undergoes rotation in accordance with rotation of the front train wheel. A second counting wheel undergoes rotation in accordance with rotation of the second counter intermediate wheel in a chronograph measurement mode. A chronograph second display member displays a measurement result corresponding to an elapsed period of time in accordance with rotation of the second counting wheel. A minute counting train wheel undergoes rotation in accordance with rotation of the second counting wheel. A chronograph minute display member displays a measurement result corresponding to an elapsed period of time in accordance with rotation of the minute counting train wheel. At least one hour counting train wheel undergoes rotation in accordance with rotation of the barrel complete in the chronograph measurement mode. A chronograph hour display member displays a measurement result corresponding to an elapsed period of time in accordance with rotation of the hour counting train wheel.

Claims27

Dependent claims

A chronograph timepiece comprising:

a barrel mounted for undergoing rotation;
a front train wheel for undergoing rotation in accordance with rotation of the barrel;
a second counter intermediate wheel for undergoing rotation in accordance with rotation of the front train wheel;
a second counting wheel for undergoing rotation in accordance with rotation of the second counter intermediate wheel in a chronograph measurement mode;
a chronograph second display member for displaying a measurement result corresponding to an elapsed period of time in accordance with rotation of the second counting wheel;
a minute counting train wheel for undergoing rotation in accordance with rotation of the second counting wheel;
a chronograph minute display member for displaying a measurement result corresponding to an elapsed period of time in accordance with rotation of the minute counting train wheel;
at least one hour counting train wheel for undergoing rotation in accordance with rotation of the barrel in the chronograph measurement mode;
and
a chronograph hour display member for displaying a measurement result corresponding to an elapsed period of time in accordance with rotation of the hour counting train wheel.

7 more elements

A chronograph timepiece comprising:

a base plate;
a barrel mounted on the base plate for undergoing rotation;
a second counting wheel for measuring an elapsed period of time in seconds in accordance with rotation of the barrel in a chronograph measurement mode;
a minute counting train wheel for measuring an elapsed period of time in minutes in accordance with rotation of the barrel in the chronograph measurement mode;
a plurality of hour counting train wheels for measuring an elapsed period of time in hours in accordance with rotation of the barrel in the chronograph measurement mode;
a chronograph second display member for displaying an elapsed period measured by the second counting wheel;
a chronograph minute display member for displaying an elapsed period measured by the minute counting train wheel;
a chronograph hour display member for displaying an elapsed period measured by one of the hour counting train wheels;
second and minute counting coupling means for starting and stopping operation of the chronograph second display member and the chronograph minute display member;
and
hour counting coupling means for starting and stopping operation of the chronograph hour display member.

8 more elements

Dependencies are inferred from the claim text.

Chronograph timepiece

Life of this patent

Chronograph timepiece

Life of this patent

Abstract

Claims27