Abstract: The present invention concerns a device for securing a back cover (6) to a middle part (28) of a watchcase (26), the back cover (6) having a screw thread (8) on its outer periphery, the device being characterized in that it includes an intermediate element (1) including a resilient blocking element (4) and a metal element (2) concentric to the resilient blocking element (4), this intermediate assembly being forcibly driven into the lower part of the middle part (28) of the watch (26), and the back cover (6) being screwed onto the metal element (2) so that, when the back cover (6) is completely screwed onto the metal element (2), the metal element (2) can be pivoted by sliding on the resilient blocking element (4) to a stop point from which the resilient blocking element (4) can in turn pivot by sliding on the middle part (28) of the watch (26), allowing the alignment of the back cover (6) to be adjusted with respect to the vertical 12 o'clock-6 o'clock axis of the watch (26).

Abstract: There is disclosed a wristwatch (1) whose wristband (6) is attached to a support (3) with respect to which the case (2) can turn over to show one or other of its faces (16, 17). The support (3) includes, on the parallel inner surfaces (9) of its flanges (7), grooves (10) in which snugs (39) connected to the case can slide and pivot. Stops are provided in the grooves (10), to stop the case sliding after a first sliding travel of the snugs (39) from the ends (42) of the grooves, to define a pivoting zone of the case, before the snugs effect a second sliding travel to the other ends (42). Support surfaces (11) and a transverse recess (12) are provided on the bottom (4) of the support to prevent the case turning over except in the zone of the stops.

Abstract: Each wristband strand (10, 20) includes at least two studs (12, 14, . . . ) extending perpendicularly to the inner surface of said strand and is each pierced in its median part by a hole (12a, 14a, . . . ) of parallel axis to the strand, each side of the middle part includes recesses (15, 17, . . . ), complementary to the studs including through passages (15a, 17a, . . . ) on the back cover side and blind holes on the crystal side. The studs are fitted into recesses, and locked with U shaped parts (18,28) engaged on the back side cover through the through passages, the holes of the studs and the blind hole. If one desires, this assembly enables a portion of the middle part located at 6 o'clock and/or 12 o'clock to be left entirely free of any attaching means.

Abstract: The wall of a case includes a U-shaped recess with two through passages (11, 17) for a control stem (20) held in a neutral position by a spring (27) and guided in the outer passage (11) by an O ring (25) allowing translation and tilting movements, and in the inner passage (17) by a contour of oblong shape allowing the end (22) to close an electric contact (32) by pressure and two other contacts (31, 33) by tilting. Application to an electronic timepiece.

Abstract: There is disclosed a device (1, 34) for positioning a first element (24) with respect to at least a second element (25) by means of a resilient locking member made in a single piece and having two ends (2, 3) connected by a bar (4) capable of being resiliently deformed in its axial direction (5). The longitudinal resilience of the bar (4) is due to the fact that it includes a plurality of apertures (11) over its length, said apertures (11) being located alternately on either side of a median plane (14) of the bar (4). This locking member can easily be manufactured in the form of a moulded plastic part.

Abstract: The electronic watch movement components (11, 12) of the watch are mounted on a flexible printed circuit film (10), which is then incorporated in the wristband (1) by overmoulding of an insulating elastomeric material. External elements in the form of cases (2-4) are mounted in a sealed manner on the wristband to protect said components and to cover at least a display unit (20) and an electric power source (15). Decorative elements (5) similar to the cases are distributed along the wristband to imitate links. Such a wristwatch may be manufactured at a low cost.

Abstract: The present invention concerns an electronic device such as, in particular, a timepiece (1), including a case (2) made of a plastic material delimited by a back cover (6) and a lateral wall (4) called the middle part, characterised in that this electronic device includes at least one means (36, 38) intended, via the effect of an application of pressure, to control at least one electronic function such as a horological function of said electronic device, this means (36, 38), directed towards the interior of the case (2), being made integral with said case (2) and being set back with respect to the outer surface of the latter, said means (36, 38) being activated using a pointed element such as the tip of a pen.

Abstract: The display module (30) includes at least one liquid crystal cell (2) electrically and mechanically connected to a flexible display control printed circuit (1)having, arranged to a single face, electronic components for controlling the cell and metal paths for connection to the components and to said cell (2). In order to make it, the printed circuit (1) is first placed on the back side of the cell (2), the face of the printed circuit with no components facing the back of the cell (2), the printed circuit (1) is positioned under the cell (2), a mechanism for assembling the module (12) defining the location of the display of the cell (2), being made on the printed circuit (1) for the positioning thereof with respect to a display marking device (13) arranged on the cell and a portion of the face of the printed circuit with no components is secured directly to the back of the cell (2).

Abstract: The drive assembly includes one or more motors (103, 104) driving at least a pair of continuously variable ratio transmission devices (101, 102) which each drive a driving wheel or driving axle of the vehicle. Each transmission device includes a planetary gear (3) whose reaction element, preferably the ring gear with an inner toothing, is connected to the rotor of a pump through which a hydraulic circuit passes provided with at least an adjustable valve (63) for adjusting the speed and/or the torque of the output shaft (27), in particular to facilitate the attainment of an operating speed for the motor when starting. The hydraulic circuits of the two transmission devices are interconnected by hydraulic lines (105, 107), which assures a differential effect between the two wheels concerned. One of these lines may include an adjustable valve (109) for limiting or blocking the differential effect.

Abstract: The present invention concerns a clasp (4) for assembling first and second flexible strands (1, 2) including a buckle (6) attached to the first (1) of the two strands, while the second strand (2) penetrates the buckle (6), characterised in that the buckle (6) includes fixed catching means (14) which are caught in the second strand (2), and in that it includes an unlocking device (22) able to be actuated manually, this unlocking device (22) allowing the second strand (2) to be raised to release it from the catching means (14) and to slip it out of the buckle (6).

Abstract: A clasp for a watch wristband includes: two male (2) and female (4) joining parts able to be coupled by inserting the male part (2) into the female part (4); and a resilient locking mechanism, provided on the male part (2), locking with a catching mechanism provided on the female part (4), when the male part (2) is pushed into an engagement position in said female part (4) so that it is then impossible to pull outwardly the male joining part (2), the male (2) and female (4) joining parts being able to be uncoupled from each other by pushing the male part (2) further into the female part (4) so that the locking mechanism is released from the catching mechanism and the male joining part (2) can be pulled out of the female joining part (4).

Abstract: A wristwatch (1) whose wristband (6) is attached to a support (3) with respect to which the case (2) can be reversed in the longitudinal direction to show one or other of its faces (16, 17). The case has a pointed profile at its ends, its faces (16, 17) having convex profiles, which are preferably similar. The bottom (4) of the support (3) is concave so as to have a substantially complementary profile to those of the faces of the case. Further, the lateral flanges (7) of the support have substantially the same convex profile, so that the case and the support are substantially flush with each other over the entire length of the case, thus giving a fluid attractive appearance to the watch and to the reversing movement of the case.

Abstract: The present invention concerns a device for securing a back cover (6) to a middle part (28) of a watchcase (26), the back cover (6) having a screw thread (8) on its outer periphery, the device being characterized in that it includes an intermediate element (1) including a resilient blocking element (4) and a metal element (2) concentric to the resilient blocking element (4), this intermediate assembly being forcibly driven into the lower part of the middle part (28) of the watch (26), and the back cover (6) being screwed onto the metal element (2) so that, when the back cover (6) is completely screwed onto the metal element (2), the metal element (2) can be pivoted by sliding on the resilient blocking element (4) to a stop point from which the resilient blocking element (4) can in turn pivot by sliding on the middle part (28) of the watch (26), allowing the alignment of the back cover (6) to be adjusted with respect to the vertical 12 o'clock-6 o'clock axis of the watch (26).

Abstract: Each wristband strand (10, 20) includes at least two studs (12, 14, . . . ) extending perpendicularly to the inner surface of said strand and is each pierced in its median part by a hole (12a, 14a, . . . ) of parallel axis to the strand, each side of the middle part includes recesses (15, 17, . . . ), complementary to the studs including through passages (15a, 17a, . . . ) on the back cover side and blind holes on the crystal side. The studs are fitted into recesses, and locked with U shaped parts (18,28) engaged on the back side cover through the through passages, the holes of the studs and the blind hole. If one desires, this assembly enables a portion of the middle part located at 6 o'clock and/or 12 o'clock to be left entirely free of any attaching means.

Abstract: The apparatus includes a feed hopper (39), a vibratory module (20) formed by a sieve (26) and by a first transducer (22) associated with a first resonator (21), said transducer (22) receiving an a.c. control voltage Vcom allowing it to transmit mechanical vibrations to said sieve (26, 26′) in response, means (30, 40) for locking said vibratory module (20) below said hopper (39), and an electronic control unit (50) arranged to supply said control voltage Vcom,. It is characterized in that it further includes a second transducer (24) arranged in proximity to said sieve (26) and in that said control unit (50) includes a stage (55) arranged to receive a measuring voltage Vmes. representative of the mechanical vibrations and to adjust the control voltage Vcom of the first transducer (22) in response so as to enslave the powder flow rate value to a predetermined desired value.

Abstract: The invention concerns a watch formed of a wristlet (12) and a case (10) provided with a slide-way (30) in which the wristlet (12) is engaged and may be moved in translation, wherein the wristlet is formed of a strap (36) the length of which substantially corresponds to the length of the wristlet and wherein the two longitudinal edges (36a, 36b) of said strap are rolled over their entire length to form two rolls (36d, 36e).

Abstract: The present invention concerns a clasp (4) for assembling first and second flexible strands (1, 2) including a buckle (6) attached to the first (1) of the two strands, while the second strand (2) penetrates the buckle (6), characterised in that the buckle (6) includes fixed catching means (14) which are caught in the second strand (2), and in that it includes an unlocking device (22) able to be actuated manually, this unlocking device (22) allowing the second strand (2) to be raised to release it from the catching means (14) and to slip it out of the buckle (6).

Abstract: There is disclosed a wristwatch (1) whose wristband (6) is attached to a support (3) with respect to which the case (2) can turn over to show one or other of its faces (16, 17). The support (3) includes, on the parallel inner surfaces (9) of its flanges (7), grooves (10) in which snugs (39) connected to the case can slide and pivot. Stops are provided in the grooves (10), to stop the case sliding after a first sliding travel of the snugs (39) from the ends (42) of the grooves, to define a pivoting zone of the case, before the snugs effect a second sliding travel to the other ends (42). Support surfaces (11) and a transverse recess (12) are provided on the bottom (4) of the support to prevent the case turning over except in the zone of the stops.