Loading patent…
AssigneeThe Swatch Group Research and Development Ltd
InventorsLionel Paratte, Donald William Corson, Dominique Lechot
Estimating the term…
Watch comprising a movement, with a balance comprising a ring distinct from the balance rim, elastically fixed to a flange with respect to which this ring is movable in rotation to modify the position of inertia blocks elastically carried by the flange, each able to be indexed in different stable angular positions corresponding to a different inertia of the balance, the movement including an operating member movable between coupled and uncoupled positions which includes a stop means for immobilizing the rim in a coupled position, and a control means for rotating the ring to modify the position of the inertia blocks in the coupled position, the watch including a crown controlling the control means, a rotating coupling ring controlling the coupling/uncoupling of the operating member through contactless interaction with an external adjustment tool.
A timepiece balance wheel with adjustable inertia, comprising a staff carrying, a rim via at least one arm, and an inner flange secured to said staff and carrying an outer ring via a plurality of first elastic guide connections, which are inertia balanced in a plane perpendicular to an axis of said staff said outer ring being separate from said rim, a balance comprising a plurality of inertia-blocks, wherein said outer ring is arranged to pivot with respect to said inner flange under the action of an external torque exerted against a resistant torque exerted by said first elastic guide connections, and wherein each said inertia block is carried at least by said inner flange via at least a second elastic connection and can be indexed in a stable angular position defined by respective cooperation between a first indexing toothing carried by said inner flange or by one said inertia block, and a second indexing toothing which is respectively carried by said inertia block or by said outer ring, and wherein any rotation of said outer ring with respect to said inner flange modifies the angular position of said inertia blocks.
Dependencies are inferred from the claim text.