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US 9,429,916 B2Granted
Isochronous paraxial timepiece resonator
AssigneeETA SA Manufacture Horlogere Suisse
InventorsJean-Jacques Born, Jean-Luc Helfer
Life of this patent
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Abstract
A timepiece resonator including one weight connected by flexible strips to fixed attachment points of a fixed structure, this weight being subjected to a torque and/or a stress, and oscillating with at least two degrees of freedom in translation, and these flexible strips maintain the oscillations of this weight about a virtual pivot.
Claims24
An equipped timepiece resonator for a watch movement, comprising:
- one weight connected by a plurality of flexible strips to four points of attachment of a fixed structure, formed by a plate of said movement or arranged to be secured to a said plate, said weight being arranged to be subjected to a torque and/or a stress, said flexible strips including long arms spirally wound about said weight,
- wherein said weight is arranged to oscillate with at least two degrees of freedom in translation in a first direction, and in a second direction orthogonal to said first direction,
- wherein said flexible strips are arranged to maintain oscillations of said at least one weight about a virtual pivot that is movable from an initial position.
An equipped timepiece resonator for a watch movement, comprising:
- one weight connected by one flexible strip or a plurality of flexible strips to one or more points of attachment of a fixed structure, formed by a plate of said movement or arranged to be secured to a said plate, said weight being arranged to be subjected to a torque and/or a stress,
- wherein said weight is arranged to oscillate with at least two degrees of freedom in translation, and
- wherein said flexible strips are arranged to maintain oscillations of said at least one weight about a virtual pivot, and
- wherein said resonator includes a plurality of said weights concentric with each other about said virtual pivot, each innermost weight of said weights being suspended from a next one by said first flexible strips and said second flexible strips, and an outermost one of said weights being suspended from said structure by said first flexible strips and said second flexible strips.
1 more element
Dependencies are inferred from the claim text.