Eta Sa Manufacture Horlogere Suisse

Compagnie Des Montres Longines, Francillon S.a.

Raphael Loeffel

Ivan Villar

Marco Bettelini

Christophe Cattin

Olivier Mahler

Gael Feusier

Autonomous control mechanism () for a movement, comprising a control stem () moveable relative to a bar () between stable stem positions, for controlling the pivoting, in each of said positions, of a single control train of the control trains of said mechanism (). It includes, on a first side () of said bar (), a first control train (), and on a second side () opposite said bar (), a second control train (). Every stable position of the control stem () drives a stable position of a pull-out piece () fitted to one of said sides and moveable relative to a boss () of said bar (). In said stable pull-out piece position, any movement applied to the control stem () causes the pivoting movement, of either a single first control train (), or a single second control train ().

Autonomous control mechanism for a timepiece

Timepiece barrel with a drum coaxial to a barrel arbour in a direction arranged to confine a barrel spring hooked to the drum and to a core coaxial to the barrel arbour and guided thereon. The core pivots in a bore of the drum, and includes a first stopping surface limiting the axial travel of the core, in the direction, relative to an inner face of the drum, and a second stopping surface opposite the first and limiting the axial travel of the core, relative to an outer face of the drum, which is arranged, on the one hand, imprisoned between the first stopping surface and the second stopping surface, and on the other hand to pivot freely about the core.

Economical timepiece barrel

The invention concerns an AM/PM display disc (), rotating in one day about an axis of rotation (), including two different juxtaposed surfaces (). It is characterized in that the surfaces are delimited, between a hub () and the periphery () of said disc () by two boundary curves (), each tangential to said periphery () and having a single concavity from said periphery () towards said hub (), the concavities of said curves () having the same direction relative to the direction of rotation (A) of said disc (), and any radial line originating from said axis () intersecting, in succession, one of said two surfaces, then the other, and only passing through one of said curves between said hub () and said periphery (). The invention also concerns an AM/PM display device () including an aperture () and a disc of this type (), characterized in that said axis () is external to said aperture () which is symmetrical relative to an axis of symmetry () passing through said axis of rotation (). The invention also concerns a timepiece incorporating a device () of this type.

Growing community of inventors

Le Landeron, Switzerland

Raphael Loeffel