Csem Centre Suisse D'electronique Et De Microtechnique Sa Recherche Et Developpement

Csem Centre Suisse D'electronique Et De Microtechnique Sa

François Barrot

Gregory Musy

Simon Henein

Sylvain Jeanneret

Florent Cosandier

Serge Droz

Grégory Musy

Olivier Laesser

Emmanuel Dominé

Remy Fournier

Laurent Giriens

Johan Kruis

Rémy Fournier

The mechanical timepiece regulator of the invention comprises a flexure bearing oscillator and a double detent escapement, the oscillator comprising a balance wheel () connected to an elastic suspension () arranged to guide and apply a restoring force to the balance wheel () in a plane of oscillation. The escapement comprises an escape wheel () and an anchor () integrated into the balance wheel () and having two arms () arranged to receive alternately the impulses of the escape wheel (). The escapement furthermore comprises two detents () alternately locking the escape wheel () between two impulses and interacting with the arms () of the anchor to release the escape wheel () before each impulse, without direct interaction between the anchor and the escape wheel.

Mechanical timepiece regulator

A shock-absorber and/or vibration-absorber device is proposed, comprising at least one flexible element able to deform under the effect of a stress; said device being remarkable in that it includes at least one so-called dissipative layer made from a material having a shear modulus lower than the shear modulus of the flexible element, a shock-absorbing factor greater than the shock-absorbing factor of said flexible element, and at least partially secured to said flexible element such that a flexion of the flexible element, under the effect of a stress, provides shearing of the dissipative layer making it possible to dissipate at least part of the energy from said stress. A method for manufacturing said shock-absorber device is also disclosed.

Shock-absorber device, in particular for a micromechanical clockwork component

Mechanical oscillator for a horological movement, comprising: a central fixed part being configured to be fixed to a frame of the horological movement; an inertial rim coaxial with a pivoting axis of the mechanical oscillator; at least two rigid links extending radially between the central fixed part and the inertial rim and supporting the inertial rim; and at least two flexible links extending radially from the central fixed part; each flexible link comprising a first flexible element and a second flexible element substantially coplanar to the first element, the first flexible element and the second flexible element being rigidly connected at their distal extremity; the proximal extremity of the first flexible element being fixed to the fixed part and the proximal extremity of the second flexible element being fixed to one of said at least two rigid links, such that the inertial rim can oscillate around the pivoting axis.

Mechanical oscillator for a horological movement

A method for fabricating a micromechanical part from a substrate in which the part is fabricated by providing a plurality of fasteners between the part and the substrate, the fasteners being sacrificial, characterized in that the fasteners include at least one hinge at the end of each fastener located beside the part, and in that the method includes a step of breaking the sacrificial fasteners. The micromechanical parts employing this type of sacrificial fastener are also described.

Method for freeing a micromechanical part and a micromechanical part comprising sacrificial fasteners

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Erlach, Switzerland

François Barrot