Abstract: A timepiece barrel assembly, including a barrel mainspring mounted between a barrel drum and a receiving surface of a barrel core coaxial to the drum. The spring is made of a multiphase, cobalt-nickel-chromium based alloy, having a Young's modulus of between 200 and 240 GPa and a shear modulus of between 80 and 100 GPa, and having a width to thickness ratio of between 9 and 21, and the maximum radius of the steel or stainless steel core relative to its pivot axis is less than nine times the maximum thickness of the spring, and the barrel assembly includes, on the spring or the drum, a mechanism limiting longitudinal clearance, towards the pivot axis, between the drum and the mainspring.

Abstract: Use of a programmable device with capacitive touch screen for the analysis of a fluid sample as interface between a micro-fluidic device, this micro-fluidic device comprising at least one electrode and at least one micro-channel comprising an input for the introduction of the sample, and the processor of said programmable device with a capacitive touch screen.

Abstract: Timepiece barrel for pivotal assembly between a bottom plate and a bridge and including at least one spring housed between a pivoting drum and a ratchet and hooked between this drum at the outer end thereof and an arbour at the inner end thereof, this arbour pivoting integrally with this ratchet about a pivot axis. This barrel includes a single-piece sub-assembly, coaxial with this arbour and grouping together around a hub, this arbour and this ratchet in immediate proximity to this bottom plate, and which is pivoted on an upper shoulder in a bore of this drum on an end pipe whose outer shoulder pivots in a bore of this bridge or of a jewel comprised in this bridge.

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: 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: The invention concerns an anti-trip device (1) for an escape mechanism (10) arranged to cooperate with a balance (2) pivoting about a first axis (D1). It includes a pivoting wheel set (5), pivotally moveable about a second axis (D2) parallel to said first axis (D1) and fixed relative to a plate. The pivoting wheel set (5) includes guide means (7) arranged to cooperate with complementary guide means (9) comprised in a roller (3) pivoting integrally with said balance (2). Said complementary guide means (9) includes a cam (90) for moving said pivoting wheel set (5) closer to said first axis (D1) when said balance is pivoting in a first direction (B1) and to move said wheel set away from said first arbour when the balance is pivoting in a second direction (B2) opposite to said first direction (B1). Said guide means (7) includes a fixed finger arranged to cooperate with said cam.

Abstract: Anti-trip device (1) for a balance (2) pivoting about an axis (D1) whose position is fixed relative to a plate (3). It includes a banking pin (5) on said plate (3), a bistable assembly (8) including: a rotor (9) which is synchronous with said balance (2) and a lever (11) pivoting about another axis (D2) of said rotor (9) between two extreme positions of indexing means (12) memorizing the position of said balance (2), the trajectory of said lever (11) partially interfering with said banking pin (5) when said balance (2) is pivoting; means (15) for limiting amplitude in the event of a shock, which includes stop means (16) between said lever (11) and said banking pin (5), forming a pivot stop during a normal arc of the balance and which, when pressed, generates a change of position in said indexing means (12) and a stop for said balance (2) in the event of knocking.

Abstract: Escape wheel (1) including a toothed impulse wheel (2) and a toothed release wheel (4) pivoting synchronously about an axis (D1). The toothed release wheel (4) includes moveable gears (5) each with a release tooth (6), radially moveable relative to the axis (D1) and returned to a position of balance by first return device (7), and a locking tooth (8), returned in a first radial direction (S1) towards a stop member by second return device (9). The impulse tooth (6) includes drive device (11) arranged to cooperate, when the impulse tooth moves in a second opposite radial direction (S2), with complementary drive device (12) of the locking tooth (8) for driving the locking tooth in the second direction (S2) and, when the impulse tooth moves in the first direction (S1), to remain at a distance from the complementary drive device (12) without driving the locking tooth (8).

Abstract: The invention relates to a method (31) for fabricating pallets (3) for an escapement system (1). According to the invention, the method (31) includes the following steps: a) forming (31), using a first material, the lever of the pallets (3) a first end of which includes the dart (15) and a second end includes two arms (11, 13) each for receiving a pallet stone (10, 12); b) over-moulding (35) a second material on said first end in order to form a pallets fork (17); c) adjusting (37, 39) said pallet stones and a staff (14) to enable the pallets (3) to be rotatably mounted. The invention concerns the field of escapement systems for timepieces.

Abstract: The invention relates to a method (19, 19?, 39, 39?, 59, 59?) of assembling a part (5, 5?, 25, 25?, 45, 45?) in the aperture (18, 18?, 38, 38?, 58, 58?) of a component (3, 3?, 23, 23?, 43, 43?). According to the invention, the assembly system (19, 19?, 39, 39?, 59, 59?) includes a system (1, 1?, 21, 21?, 41, 41?) of securing the component (3, 3?, 23, 23?, 43, 43?) and the part (5, 5?, 25, 25?, 45, 45?) to each other, which includes at least one pawl device (11, 11?, 31, 31?, 51, 51?) intended to make the component (3, 3?, 23, 23?, 43, 43?) and the part (5, 5?, 25, 25?, 45, 45?) move integrally with each other. 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: Escape wheel (1) including a toothed impulse wheel (2) and a toothed release wheel (4) pivoting synchronously about an axis (Dl). The toothed release wheel (4) includes moveable gears (5) each with a release tooth (6), radially moveable relative to the axis (D1) and returned to a position of balance by first return device (7), and a locking tooth (8), returned in a first radial direction (Si) towards a stop member by second return device (9). The impulse tooth (6) includes drive device (11) arranged to cooperate, when the impulse tooth moves in a second opposite radial direction (S2), with complementary drive device (12) of the locking tooth (8) for driving the locking tooth in the second direction (S2) and, when the impulse tooth moves in the first direction (S1), to remain at a distance from the complementary drive device (12) without driving the locking tooth (8).

Abstract: The invention concerns an anti-trip device (1) for an escape mechanism (10) arranged to cooperate with a balance (2) pivoting about a first axis (D1). It includes a pivoting wheel set (5), pivotally moveable about a second axis (D2) parallel to said first axis (D1) and fixed relative to a plate. The pivoting wheel set (5) includes guide means (7) arranged to cooperate with complementary guide means (9) comprised in a roller (3) pivoting integrally with said balance (2). Said complementary guide means (9) includes a cam (90) for moving said pivoting wheel set (5) closer to said first axis (D1) when said balance is pivoting in a first direction (B1) and to move said wheel set away from said first arbour when the balance is pivoting in a second direction (B2) opposite to said first direction (B1). Said guide means (7) includes a fixed finger arranged to cooperate with said cam.

Abstract: Anti-trip device (1) for a balance (2) pivoting about an axis (D1) whose position is fixed relative to a plate (3). It includes a banking pin (5) on said plate (3), a bistable assembly (8) including: a rotor (9) which is synchronous with said balance (2) and a lever (11) pivoting about another axis (D2) of said rotor (9) between two extreme positions of indexing means (12) memorising the position of said balance (2), the trajectory of said lever (11) partially interfering with said banking pin (5) when said balance (2) is pivoting; means (15) for limiting amplitude in the event of a shock, which includes stop means (16) between said lever (11) and said banking pin (5), forming a pivot stop during a normal arc of the balance and which, when pressed, generates a change of position in said indexing means (12) and a stop for said balance (2) in the event of knocking.