Abstract: A spiral spring, in particular for a horological resonator mechanism, the spiral spring (30) extending substantially in a plane, the spiral spring (30) including a flexible strip (2) coiled on itself in a plurality of turns, the strip (2) having a predefined rigidity, the spiral spring (30) including means for adjusting its rigidity, wherein the adjustment means comprise a flexible element (5) in direct contact with the strip (2), the flexible element (5) preferably having a rigidity greater than that of the strip (2), the adjustment means including prestressing means (6) for applying a variable force or torque to the flexible element (5) so as to vary the rigidity of the flexible element (5).

Abstract: A flexible guide for a rotating resonator mechanism, in particular of a horological movement, the guide including a fixed support, an element that is capable of moving relative to the fixed support, at least two main flexible blades allowing the movable element to move relative to the fixed support by bending the main flexible blades via a rotary motion about a centre of rotation, the flexible guide being arranged substantially in one plane, the flexible guide including at least two translation tables, each joined to one end of a main flexible blade, such that each translation table is configured to move in translation at least in part under the effect of the bending of the corresponding main flexible blade, the flexible guide including at least one tertiary flexible blade connecting the two translation tables.

Abstract: A flexible guide for a rotary resonator mechanism, in particular of a horological movement, the guide including a fixed support, an element movable relative to the fixed support, at least one main flexible strip allowing the movable element to move relative to the fixed support by bending the main flexible strip(s) in a rotary movement about a centre of rotation, the flexible guide being arranged substantially in a plane, and includes at least a first translation table joined to one end of the main flexible strip, so that the first translation table is configured to move in translation at least in part under the effect of the bending of the main flexible strip, the flexible guide including a device for adjusting the rigidity of the first translation table.

Abstract: A flexible guide for a rotating resonator mechanism, in particular of a horological movement, the guide including a fixed support, an element that is capable of moving relative to the fixed support, at least one main flexible blade allowing the movable element to move relative to the fixed support by bending the one or more main flexible blades via a rotary motion about a centre of rotation, the flexible guide being arranged substantially in one plane, and includes at least one translation table joined to one end of the main flexible blade, the main flexible blade and the translation table forming a pair connected to the fixed support, to the movable element, or to an intermediate movable part, such that the translation table is configured to move in translation at least in part under the effect of the bending of the main flexible blade.

Abstract: A device (10) for guiding a pivoting mass in rotary pivoting, in particular for a horological movement comprising, arranged in series substantially in the same plane, a first support (2), a first pair of uncrossed strips (5, 6), a second support (3), a pair of crossed strips (7, 8), and a third support (4), the pair of uncrossed strips including, a first (5) and a second (6) flexible strip connecting the first support (2) to the second support (3) without crossing each other, the pair of crossed strips including a third (7) and a fourth (8) flexible strip connecting the second support (3) to the third support (4), the third (7) and fourth (8) flexible strips crossing each other between the second (3) and the third (4) support.

Abstract: Mechanical oscillator comprising: an inertial body having a primary moment of inertia I about a first (y) and second (z) orthogonal axes, and a secondary moment of inertia J about a third axis (x, P) orthogonal to each of said first (y) and second (z) axes; and an elastic system arranged to apply a restoring torque ? to said inertial body, said restoring torque ? acting to urge said inertial body towards a resting position, said elastic system being arranged such that said inertial body has substantially two degrees of freedom in rotation, one of said degrees of freedom being around said first axis (y) and another of said degrees of freedom being around said second axis (z), and substantially zero degrees of freedom in translation According to the invention, the ratio of secondary moment of inertia J to primary moment of inertia/substantially obeys the equation: J I = 2 ? k 3 k 1 + 4 / 3 and said restoring torque r substantially obeys the equation: ?(?)=k1?+k3?3+k5?5+ . . .

Abstract: Mechanical oscillator including an inertial body joined to a support by an elastic system, the elastic system being arranged to confer the inertial body substantially two degrees of freedom in rotation about a point having a substantially fixed relationship with respect to the support, and substantially no degrees of freedom in translation. The elastic system includes at least two rods and an L-shaped beam the rods and the L-shaped beam being situated in a single plane when the inertial body is in a neutral position.