Abstract: Balance spring (1) comprising two pairs (50) each formed of adjacent coils (51; 52) respectively comprising stopping means (11) and quincuncial staggered complementary stopping means (12) defining together, for each pair (50), a respective, relative, maximum angular travel (CA) of these coils during the local coupling thereof during accelerations of the balance spring (1) which are greater than desired values, in order to limit the number of active coils. The stopping means (11) and complementary stopping means (12) of these pairs (50) define different maximum angular travel values (CA), to gradually limit the amplitude of pivoting between the ends (3; 4) of the balance spring (1) during accelerations greater than these desired values, one of said pairs (50) cooperating in abutment before the other, to gradually modify the resulting rigidity of the balance spring (1) by the successive deactivation or reactivation of the coils (5) thereof.

Abstract: The invention relates to a one-piece hairspring (21, 21?) including, a balance spring (25, 25?) coaxially mounted on a collet (27, 27?), made in the same layer of silicon-based material. According to the invention, the hairspring includes an elevation device (2, 2?) for the outer coil of the balance spring above the layer of silicon-based material so as to improve the concentric development of the hairspring. The invention also relates to a timepiece including a hairspring of this type and the method of manufacturing the same. The invention concerns the field of timepiece movements.

Abstract: An assembly of a member, made of a first material in an aperture of a part, made of a second material having no plastic domain, using an intermediate part made of a third material, mounted between the member and the part. The intermediate part includes a hole for receiving the member. The part includes pierced holes forming a deformation mechanism distributed around the aperture thereof. The elastically and plastically deformed intermediate part radially grips the member and stresses the elastic deformation mechanism of the part so as to secure the assembly in a manner that is not destructive for the part. Such an assembly can for example be used in the field of timepieces.

Abstract: Method of adjusting the oscillation frequency of a timepiece regulating assembly with no index assembly, formed of a balance and balance spring assembly, to a predetermined oscillation frequency: a particular balance spring assembly is randomly taken from a production of toleranced products; the return torque of said balance spring assembly is measured; a balance is randomly taken from a production of toleranced products; a calculation is made of the theoretical inertia (IT) of said particular balance required to achieve said predetermined oscillation frequency, according to said measured return torque of said balance spring; the real inertia (IR) of said particular balance is measured; by direct action on said particular balance, the inertia of said particular balance is corrected to said calculated theoretical inertia value (IT) in order to obtain said predetermined oscillation frequency for said regulating assembly formed by said particular balance, and by said particular balance spring assembly.

Abstract: An assembly of an axially extending member, made of a first material, in an aperture of a part, made of a second material having no plastic domain. The part includes pierced holes forming an elastic deformation mechanism distributed around the aperture thereof. Further, the member includes an elastically and plastically deformed, radially flared portion that radially grips a wall of the part surrounding the aperture by stressing the elastic deformation mechanism, so as to secure the assembly in a manner that is not destructive for the part. The assembly can be used in the field of timepieces.

Abstract: The invention relates to a method (1) of manufacturing a silicon-metal composite micromechanical component (51) combining DRIE and LIGA processes. The invention also relates to a micromechanical component (51) including a layer wherein one part (53) is made of silicon and another part (41) of metal so as to form a composite micromechanical component (51). The invention concerns the field of timepiece movements.

Abstract: A method for adjusting oscillation frequency of a spring balance assembly. A removal and/or an addition and/or a displacement of material is/are conducted on a component of the assembly under effect of a pulse of a transformation mechanism to conduct a micromachining and/or microfusion operation on the material of the component or of an addition material to vaporize and/or displace and/or weld the material. The pulse is controlled by a controller configured to generate, sequence, interrupt any pulse and to control movements of a beam of the transformation mechanism, wherein the controller is connected to or automatically controlled by a measuring or comparing mechanism.

Abstract: The invention relates to a composite balance (45, 45?) formed in a layer of silicon-based material (21) and including a hub (39, 39?) connected to a felloe (37, 37?) by at least one arm (40, 41, 42, 43). According to the invention, the felloe (37, 37?) includes at least one additional part approximately in the shape of a notched ring (23, 23?) of higher the than the silicon-based material, which increases the inertia of the balance. The invention also relates to a method 1 of manufacturing this type of balance. The invention concerns the field of timepiece movements.

Abstract: The invention relates to a one-piece regulating member including a balance cooperating with a hairspring made in a layer of silicon-based material and including a balance spring coaxially mounted on a collet. According to the invention, the collet includes one extending part that projects from the balance spring and which is made in a second layer of silicon-based material and is secured to the balance.

Abstract: The invention relates to a method (1) of manufacturing a silicon-metal composite micromechanical component (51) combining DRIE and LIGA processes. The invention also relates to a micromechanical component (51) including a layer wherein one part (53) is made of silicon and another part (41) of metal so as to form a composite micromechanical component (51). The invention concerns the field of timepiece movements.

Abstract: An oscillating mechanism for a timepiece movement, including a first rigid element and a second rigid element, each one fixed on a different element of the movement and at least one of which is mobile relative to the other and pivots about an axis. The mechanism is monobloc and flexible with a variable geometry, and includes a first elastic restoring mechanism producing an elastic connection between the first rigid element and an intermediate rigid element, and a second elastic restoring mechanism producing an elastic connection between the intermediate element and the second rigid element, which all are coplanar according to one plane and configured to be deformed according to the plane.

Abstract: An escapement system that includes an anchor fitted with a fork configured to cooperate with a pin mounted on a disc and a shaft including arms configured to receive pallets to cooperate with at least one escape wheel. A part of the escapement system is made from an at least partially amorphous metal alloy.

Abstract: The invention relates to a single piece coaxial escape wheel set (100, 100?) including a first toothing (108, 108?) formed at the periphery of a plate (103, 103?) and a second toothing (113, 113?). According to the invention, the second toothing (113, 113?) is formed in a single piece with the plate (103, 103?) of the first toothing (108, 108?) so as to reduce any problems of alignment of one in relation to the other and to decrease the overall mass of the wheel set (100, 100?). The invention concerns the field of timepieces.

Abstract: The invention relates to a one-piece hairspring (21, 21?) including, a balance spring (25, 25?) coaxially mounted on a collet (27, 27?), made in the same layer of silicon-based material. According to the invention, the hairspring includes an elevation device (2, 2?) for the outer coil of the balance spring above the layer of silicon-based material so as to improve the concentric development of the hairspring. The invention also relates to a timepiece including a hairspring of this type and the method of manufacturing the same. The invention concerns the field of timepiece movements.

Abstract: The invention relates to a one-piece hairspring (21, 21?) including, a balance spring (25, 25?) coaxially mounted on a collet (27, 27?), made in the same layer of silicon-based material. According to the invention, the hairspring includes an elevation device (2, 2?) for the outer coil of the balance spring above the layer of silicon-based material so as to improve the concentric development of the hairspring. The invention also relates to a timepiece including a hairspring of this type and the method of manufacturing the same. The invention concerns the field of timepiece movements.

Abstract: The invention relates to a timepiece component (1) that has an aperture (7) for receiving a support element (3) and includes a clamping system (13) for exerting radial force, allowing said timepiece component to be secured to said support element. According to the invention, the clamping system (13) includes a radial clamping device (15) that has a crown (6) for exerting said radial force and a concentric, blind recess (8) spaced apart from said aperture, for allowing said crown to travel. The invention concerns the field of timepieces.

Abstract: The invention relates to a timepiece component (1) that has an aperture (7) for receiving a support element (3) and includes a clamping system (13) for exerting radial force, enabling said timepiece component to be secured to said support element. According to the invention, the clamping system (13) includes a radial clamping device (15) that has a crown (6) for exerting said radial force and a concentric, blind recess (8) spaced apart from said aperture, to allow a travel for the crown. Moreover, the clamping system (13) further includes a device allowing a travel (17) that has a second, concentric, blind recess (10), spaced apart from said first blind recess (8), and located on the opposite surface to said first recess, to allow said crown a greater degree of freedom relative to said support element. The invention concerns the field of timepieces.

Abstract: A method of assembling a member made of a first material in a part made of a second material having no plastic domain, includes forming the part with an aperture, inserting a radially flared portion of the member into the aperture, without any stress, and elastically and plastically deforming the flared portion of the member in the aperture by moving two tools towards each other axially, respectively on the top and bottom parts of the flared portion, so as to exert a radial stress against the wall of the part surrounding the aperture, causing the elastic deformation of the part, to secure the assembly in a manner that is not destructive for said part. The member can be a timepiece.

Abstract: A method of assembling a member made of a first material in a part made of a second material having no plastic domain, including forming the part with an aperture; inserting an intermediate part, which is made of a third material and includes a hole into the aperture without any stress; introducing the member into the hole without any stress; elastically and plastically deforming the intermediate part by moving two tools towards each other axially, respectively on the top and bottom parts of the intermediate part, so as to exert a radial stress against the member and against the wall of the part surrounding the aperture by causing the elastic deformation of the part, in order to secure the assembly in a manner that is not destructive for the part. The member can be a time piece.

Abstract: The part is made from a plate (1) made of a brittle material, such as glass, quartz or silicon and includes at least one aperture (2, 4, 6) for driving in a shaft (5). This aperture is characterized in that it includes alternately rigidifying and positioning zones (8) and resilient deformation zones (10). Application to securing a shaft onto the moving parts of a timepiece movement.