Rolex Sa

Jérôme Daout

Richard Bossart

Jean-Marc Bonard

Hairspring for a balance wheel/hairspring resonator, comprising n blades, where n&#x2267;2, which are fastened via at least one of their respective homologous ends and wound in spirals with an angular offset capable of neutralizing the lateral forces liable to be exerted on its central arbor when one of the ends of each blade is moved angularly around said central arbor relative to its other end.

Hairspring for a balance wheel/hairspring resonator

The invention relates to a backlash-compensating toothed moving part, for a precision gear assembly, particularly in clock-making, in which the backlash-compensating teeth each have a section extending symmetrically to both sides of the radius of said mobile passing the tip of said teeth with an elastic connection to said mobile to give said teeth a freedom of movement in the plane of the mobile, at least one tooth in two being a backlash-compensating tooth comprising stop means () arranged to limit the freedom of movement as a function of the backlash in the gear assembly to be compensated for.

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Rolle, Switzerland

Jérôme Daout