Eta Sa Manufacture Horlogere Suisse

Christian Bracher

Raphaël Courvoisier

Chrystel Gressly

Raphaël Wuethrich

The dial () of the watch is fitted with an indicator (), preferably with a hand (), which displays the function fulfilled by a control crown (), respectively, in each axial position of the crown, including a highly water resistant position in the case of a screwed-in crown. The indicator is controlled by axial movements of a sleeve () secured to the crown, via a transmission mechanism () including a slide block () that is mobile parallel to an axis of rotation () of the crown. The hand is secured to a pinion () meshed with a rack () arranged on a slide block. The slide block includes a flexible part () between a back part that slides in a groove (), and a front arm () provided with a lateral finger () engaged in an annular groove of the sleeve. This transmission is compact and facilitates assembly and removal.

Watch with a function indicator

The invention concerns a timepiece including a dial () fitted with an aperture () behind which is mounted a moon phase disc () driven in rotation by a moon phase train (). According to the invention said disc () is mounted so as to move in rotation about a fixed sun pinion (). Moreover, two planetary wheels (), secured in rotation to representations of the moon (), are mounted so as to move in rotation on the disc (), at least indirectly meshed with the sun pinion (), so as to form a planetary train with the sun pinion ().

Growing community of inventors

Albligen, Switzerland

Christian Bracher