Loading patent…
AssigneeMonet Jaquet Droz S A
InventorsRaphaël Courvoisier, Alphonse Bron
Estimating the term…
A vertical type uncoupling device, in particular in an automatic watch winding mechanism that includes an oscillating mass and a gear train connecting the oscillating mass to a barrel (9), wherein a gear train includes a direction reverser device (11, 12), a reduction gear (13, 14, 15, 16) and the uncoupling device (20). The uncoupling device includes two coaxial wheels (17, 7) that can be coupled in rotation in one direction owing to respective Breguet toothings (21, 22) arranged on the opposite flanks of the wheels. The coaxial wheel (17), which is mobile in the axial direction, is secured to a sliding arbour (18), which is mounted so as to rotate and slide in fixed bearings (24, 25). A return spring (26) includes an elastic strip that abuts against one end of the sliding arbour (18) to tend to engage and keep meshed the Breguet toothings. This design reduces friction and saves space. Other applications of this type of uncoupling device in a watch movement are described.
An uncoupling device for a timepiece mechanism, including two coaxial wheels that can be coupled to each other in rotation in at least one direction owing to respective coupling elements arranged on opposite flanks of said wheels, wherein one of the coaxial wheels, being a coupling wheel, wherein said coupling wheel is mobile in the axial direction and biased by a return spring that tends to mesh the coupling elements,
A watch movement including an uncoupling device for a timepiece mechanism, including two coaxial wheels that can be coupled to each other in rotation in at least one direction owing to respective coupling elements arranged on opposite flanks of said wheels, wherein one of the coaxial wheels, being a coupling wheel, wherein said coupling wheel is mobile in the axial direction and biased by a return spring that tends to mesh the coupling elements, wherein the coupling wheel is rotatably coupled to a sliding arbour that is mounted so as to rotate and slide in fixed bearings.
Dependencies are inferred from the claim text.