Abstract: A method of manufacturing a timepiece component, such as a balance, an oscillating mass or a wheel, comprises a micro-manufacturing technique, such as the DRIE technique. The method may comprise forming at least one member in or at the periphery of the structure, of a material different from that of the structure. This member is typically metal and is formed by electro-forming using a cavity of the structure as a mold.

Abstract: A timepiece component, such as a balance, an oscillating mass or a wheel, having a structure made according to a micro-manufacturing technique, such as the DRIE technique. The component has at least one member formed in or at the periphery of the structure and made of a material different from that of the structure. This member is typically metal and is formed by electro-forming using a cavity of the structure as a mold.

Abstract: A driving member for a timepiece movement includes a shaft, and a drum and a rotating member both mounted on the shaft. The drum and the rotating member are able to rotate with respect to each other and include teeth on their periphery. First and second superposed spiral springs have outer ends fixed to the drum and to the rotating member respectively and inner ends connected to each other to connect the springs in series. The drum and the rotating member fit together at least in the area of the peripheral wall of the drum so as to together form a closed housing containing the springs.

Abstract: A unidirectional coupling-clutch runner includes a coaxial pinion and wheel which pivot relative to one another. The runner includes a first driving part angularly integral with the pinion having at least one elastic catch with the general shape, in plan view, of a C, one branch of which is elongated and terminates with a free end; and a second driving part angularly integral with the wheel and which is coplanar with the first driving part having an internal wolf-toothing. In the neutral rest position the first and second driving parts do not touch one another, the end of the elastic catches in the rest position which are not elastically deformed being located on a circumference whose diameter is larger than a circumference which goes through the top of the wolf-teeth and smaller than a circumference going through the bottom of the toothing of the second driving part.

Abstract: An escapement includes an escapement wheel (1) and an anchor (2). In the place of the traditional limiting walls or pins, the escapement includes, on the anchor (2) and/or the escapement wheel (1), elements (17, 18) for limiting the oscillations of the anchor (2) during normal operation of the escapement. In order to prevent contact between the impulse beak (10) of the pallets (6, 7) and the escapement wheel (1) upon impacts, the escapement wheel (1) has protrusions (20, 21, 22) at its periphery.

Abstract: A backlash-compensating mobile (1) intended to form a gear with a second mobile (2) and having rigid teeth (4, 5) and backlash-compensating leaf springs (16), is characterised in that the rigid teeth (4, 5) are distributed in groups of consecutive teeth, each group having a first rigid tooth (4) and a second rigid tooth (5) having respective mutually facing meshing flanks (10, 11) to permit the displacement of the second mobile (2) in both directions, and in that the leaf springs (16) are interleaved between these groups in spaces not intended to receive the teeth (3) of the second mobile (2), and extend beyond the tip circle (Ca) of the rigid teeth (4, 5) in order to cooperate with the second mobile (2).

Abstract: A unidirectional coupling-clutch runner includes a coaxial pinion and wheel which pivot relative to one another. The runner includes a first driving part angularly integral with the pinion having at least one elastic catch with the general shape, in plan view, of a C, one branch of which is elongated and terminates with a free end; and a second driving part angularly integral with the wheel and which is coplanar with the first driving part having an internal wolf-toothing. In the neutral rest position the first and second driving parts do not touch one another, the end of the elastic catches in the rest position which are not elastically deformed being located on a circumference whose diameter is larger than a circumference which goes through the top of the wolf-teeth and smaller than a circumference going through the bottom of the toothing of the second driving part.

Abstract: A driving member for a timepiece movement includes a shaft, and a drum and a rotating member both mounted on the shaft. The drum and the rotating member are able to rotate with respect to each other and include teeth on their periphery. First and second superposed spiral springs have outer ends fixed to the drum and to the rotating member respectively and inner ends connected to each other to connect the springs in series. The drum and the rotating member fit together at least in the area of the peripheral wall of the drum so as to together form a closed housing containing the springs.

Abstract: A balance spring-collet assembly for a timepiece movement comprises a collet (1) and a balance spring (3) attached at its inner end to the collet (1). The collet (1) is capable of being mounted onto a shaft (2). The external periphery of the collet (1) defines abutments (10a, 10b, 10c) against which the inner turn of the balance spring (3) may come to rest during a shock before the elastic limit of the inner turn is exceeded. The abutments (10a, 10b, 10c) are situated at respective distances (Ra, Rb, Rc) from the center (O) of the shaft (2) that increase in the direction (D) of the balance spring (3) from the inside to the outside starting at the point (8) of junction between the balance spring (3) and the collet (1).