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US 11,454,931 B2Granted
Chronograph mechanism
AssigneeMontres Breguet S.A.
InventorsAlain Zaugg, Stefan Rombach, Dominique Lechot, Jean-Philippe Rochat
Life of this patent
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Abstract
A chronograph mechanism includes an energy accumulator, a regulating system, and a gear train connecting the energy accumulator to the regulating system. The energy accumulator is formed by a strip-spring and includes a device for driving the gear train arranged to regulate the torque delivered by the strip-spring.
Claims6
A chronograph mechanism comprising:
- an energy accumulator comprised of a strip-spring;
- a regulating system;
- a gear train;
- a mechanism for winding the energy accumulator and resetting a minute counter to zero, arranged to wind the energy accumulator and reset the minute counter to zero at a same time;
- and
- a rack;
- wherein the rack has one end arranged to directly engage the strip-spring and another end arranged to directly engage with the gear train,
- wherein the rack is arranged to regulate a torque delivered by the strip-spring,
- wherein the rack is mounted to pivot in one direction of rotation to drive the gear train,
- wherein the rack connects the energy accumulator directly to the regulating system through the gear train driven by the rack, and
- wherein the mechanism for winding the energy accumulator and resetting a minute counter to zero includes at least one lever arranged to directly engage the one end of the rack.
8 more elements
A timepiece including a chronograph mechanism, the chronograph mechanism comprising:
- an energy accumulator comprised of a strip-spring;
- a regulating system;
- a gear train;
- a mechanism for winding the energy accumulator and resetting a minute counter to zero, arranged to wind the energy accumulator and reset the minute counter to zero at a same time;
- and
- a rack;
- wherein the rack has one end arranged to directly engage the strip-spring and another end arranged to directly engage with the gear train,
- wherein the rack is arranged to regulate a torque delivered by the strip-spring,
- wherein the rack is mounted to pivot in one direction of rotation to drive the gear train,
- wherein the rack connects the energy accumulator directly to the regulating system through the gear train driven by the rack, and
- wherein the mechanism for winding the energy accumulator and resetting a minute counter to zero includes at least one lever arranged to directly engage the one end of the rack.
8 more elements
Dependencies are inferred from the claim text.