Jean d'Eve Samara

For your information, I do not repair this type of watch.

The first automatic quartz watch built in 1988 by LePhare, Jean d'Eve for the 100 years of the factory.

For the concept of the Samara, Jean d'Eve was inspired by the samara, the fruit of the maple tree, for the shape of the oscillating weight.
Simple at first, the idea required avant-garde technology, developed in collaboration with the Dutch University of Eindhoven and the engineering firm Kinetron BV of La Chaux-de-Fonds, and the design was created by Jean-François Donzé.

Extract from the catalogue of the time

The Samara is an original product that does not have the disadvantages of mechanical or traditional quartz movements, while offering superior reliability and remarkable ease of use.
Twenty patents registered by the brand. A three-year warranty is given when the watch is purchased.

The Generator System

This process exploits a complex technology, using various techniques; the simplified operation is as follows:
The functional oscillating weight, visible on the top of the watch, arms, during its rotation, a spring which drives the multipolar micro-generator.
The spring, by relaxing. It allows the micro-generator to reach an instantaneous speed of 15'000 rpm. The phenomenon of uncoiling and resetting the spring occurs 8 times per revolution of the oscillating mass.
The multipolar micro-generator, currently the smallest in the world, is accelerated by the relaxation of the spring. It thus creates, by rotation, the induced current necessary for the operation of the watch.
The energy produced by the micro-generator, independent of the speed of rotation of the oscillating weight, is stored in a capacitor. This principle constitutes the essential point of the innovative generator system, which enables the Samara to benefit from an exceptional power reserve of 10 days.
The storage of the energy produced by the generator system, previously transformed into direct current, feeds an electronic circuit with a quartz oscillator, the dividing stages and the traditional Lavet stepper motor.

The energizer

The ernegizer is used when the watch has not been worn for more than ten days and has stopped. Simply press the energizer for 10 seconds at the place provided on the case back. The simplicity of this process is within the reach of every user.
To discover at the end of the page, the patents of the watch