Abstract: The present invention concerns a mechanical oscillator, comprising an oscillating system comprising a balance (1) and its return spring (3). This oscillator also comprises two elastic strips (9, 10) fixed by one end and acting in opposition intermittently by their other end on a connecting organ (8) secured to the oscillating system.

Abstract: A correction device for a timepiece display mechanism, which includes a display member fitted with a toothing of pitch P, includes a pinion provided with a toothing of pitch p, mounted on a winding stem so as to occupy at least one display correcting position A, and a correction wheel mounted between the pinion and the display member. The correction wheel includes a first toothing defined by pitch P, a head diameter D, and a foot diameter d1, formed of teeth including a tip extending substantially angularly, and the tip is cut so as to form a second discontinuous toothing that is coplanar and concentric to the first toothing, defined by pitch p less than the pitch P of the first toothing, a head diameter D equal to the head diameter of the first toothing, and a foot diameter d2 greater than the foot diameter d1 of the first toothing.

Abstract: The invention concerns a base module comprising a barrel device, a display device, and a power reserve indicator, all the components of the module being placed vertically relative to the flanks of the case, and the adjusting member being arranged visibly and directly accessible on the flank of the case.

Abstract: The invention comprises a chronograph watch including a chronograph mechanism. The chronograph mechanism includes a chronograph train (50), and a counter mechanism (64) kinematically connected to the train (50). The counter mechanism (64) further includes first and second wheel sets (78, 82) respectively provided with first and second display members (36, 38), wherein the first wheel set (78) is angularly positioned using positioning members (86) so as to rotate in steps, and the second wheel set (82) is angularly positioned by the first wheel set (78).

Abstract: A watch winder comprising plural watch winder units and a power supply. The plural watch winder units are assembled by connectors in such a manner that the watch winders units are electrically connected to one another, and the power supply is electrically connected to one of the watch winder units to supply power to all the electrically-connected watch winder units. By such arrangements, the respective watch winder units are not required to be provided with one power supply, thus saving the manufacturing cost, satisfying the requirements of environmental protection, and the watch winder units can be assembled as desired.

Abstract: A signal composing circuit 12 receives a signal including a time code from a receiving circuit 10, and detects input waveform data of a unit time length, whose value at ach sampling point is given by a value expressed in plural bits. The input waveform data is accumulated. CPU 13 calculates a minimum position on a time axis, where the minimum value of the accumulated input waveform data is given and a maximum gradient position on the time axis, where a difference between values of the accumulated input waveform data at adjacent sampling points is maximum, and further calculates a leading position of a unit time length of the signal including the time code.

Abstract: A piezoelectric drive device has a piezoelectric actuator that has a vibrator with a piezoelectric element, and a rotor that is rotated by the vibrator, an elastic device that can store the rotational energy of the rotor as elastic energy, and a driven body that is rotated by the elastic energy stored by the elastic device.

Abstract: The invention relates to a chronographic timepiece and a chronograph mechanism (7) thereof including an elapsed time indicator member (17), a reset control member (21), and a reset device (25) for the indicator member, which includes a hammer (61), mounted in translation between an inactive position, where the hammer (61) is moved away from heart-pieces (55, 57, 59) that are connected to the indicator member (17), and an active position where stop members (54, 56, 58) of the hammer exert a reset force against the heart-pieces. The hammer (61) includes two studs (64, 66) mounted so as to slide in holes (100, 102) such that the movement vectors (L, K) of the studs (64, 66) between the positions are collinear and not aligned.

Abstract: This watch case comprises a protective casing surrounded by a middle (5) and a bezel (9). The protective casing includes a glass (3), a side wall (2) and a bottom (1). A planar peripheral surface extending along the entire edge of the inner face of the glass is in contact with a similar bearing surface on the side wall (2), at least part of which forms the width of the cross section of a pressure resistant structure having parallel lateral faces (SR) perpendicular to the bearing surface, and which extends without a gap as far as the bottom (1) of the casing. The components of the casing are secured and sealed with at least one annular seal (4) surrounding the lateral face of the glass (3) and the outer lateral face of the side wall (2) of the casing, and this seal is clamped.

Abstract: A timepiece with calendar function including a dial having a tens digit display aperture for displaying the tens digit of the date and a ones digit display aperture for displaying the ones digit of the date, and a calendar mechanism that displays the date by presenting specific numerals through the dial. The calendar mechanism includes a ones display wheel having ones markers whereby the ones digit is displayed through the ones digit display aperture, a tens display wheel having tens markers whereby the tens digit is displayed through the tens digit display aperture, a ones drive mechanism that drives the ones display wheel, and a tens drive mechanism that drives the tens display wheel. The tens markers include normal tens markers that display only the tens digit in the tens digit display aperture, and a two-digit display marker that displays a tens digit in the tens digit display aperture and a ones digit in the ones digit display aperture.

Abstract: The center wheel and pinion has a center shaft provided with a center pinion that is formed from a crystalline metal, and a center tooth part composed of a metallic glass alloy that is integrally formed with the center shaft. The center shaft has a center pinion and other external peripheral regions that are formed by cutting the external periphery of a cylindrical member provided with a support hole. The external periphery of the coupling part to which the center tooth part is coupled is formed in a quadrangular shape. The center tooth part composed of a metallic glass alloy has a tooth continuously formed at the disc-shaped external periphery, and a center position that is integrally formed surrounding the entire external periphery of the quadrangular-shaped coupling part of the center shaft.

Abstract: A stepping motor as a driving device has a stator with a plate part, and first and second outer magnetic pole parts axially extending from the plate part. A rotor formed by a rotary shaft and a core, each formed of a soft magnetic material, are disposed between the outer magnetic pole parts. The rotor has one axial end rotatably supported in the plate part. A magnet is rigidly fitted on an outer periphery of the rotor and magnetized such that different poles circumferentially alternate. A top plate is rigidly secured to the respective foremost ends of the pole parts and rotatably supports the other axial end of the rotor. The pole parts are engaged in a bobbin having a cover part covering the outer peripheral surface of the magnet. First and second coils are wound around the outer magnetic pole parts via the bobbin.

Abstract: A machine useful for ship propulsion purposes includes a ship propulsion motor with two concentric air gaps. In one embodiment, the machine includes a rotor with an inner rotor core and an outer rotor core; and a double-sided stator with an inner stator side and an outer stator side. The double-sided stator is concentrically disposed between the inner rotor core and the outer rotor core.

Abstract: Date mechanism (1) for a timepiece, including: at least first (2) and second (3) date rings, rotatably mounted relative to each other, said rings having one surface provided with successive date markings (24, 34), the first date ring (2) having a display window (21), arranged between two successive markings, the first date ring (2) being superposed on the second date ring (3), each of said two date rings (2, 3) having teeth (22, 32) distributed on the periphery thereof, each tooth being associated with a respective marking (24, 34) or with the display window (21); a control wheel (4) for the first and second date rings (2, 3); characterized in that the control wheel (4) is provided with first (41) and second (42) superposed tiers of toothings, each toothing tier including one portion provided with adjacent teeth and one tooth-free portion, the tooth-free portion of one tier being arranged vertical to the toothed portion of the other tier, one tooth of the first tier (41) being superposed on one tooth of th

Abstract: A linear clock that contains a main body, twelve one hour indicators located on the main body, eleven five minute indicators interposed between the twelve one hour indicators, and four one minute indicators evenly spaced on the main body such that each indicator may be activated at an appropriate time to accurately represent the time.

Abstract: A mechanism for setting a clock hand indicates for example a date in defined positions of a scale. The mechanism includes a cam disc and a first rake which is connected to the cam disc in a force-transmitting manner and has teeth which engage into the teeth of a pinion and transmit a force. A second rake has teeth that engage into the teeth of the pinion. The second rake exerts a force on the teeth of the pinion that is opposite to the force exerted by the first rake exerts on the pinion. The first rake and the second rake are arranged so as to overlap, and the second rake can be borne pivotally around the first axle. The embodiment has the advantage that it is space-saving and the rakes stabilize one another mutually.

Abstract: A diver's watch includes a timepiece exterior assembly including a movement, a hand setting stem pipe, a crown for operating the movement, and a cover pipe. A locking face is formed at an outer peripheral portion of a case body provided to the timepiece exterior assembly. The hand setting stem pipe is fixed to the case body and includes a pipe side screw portion. The crown includes a crown cylinder inserted to inside of the hand setting stem pipe, and a crown head integral with the crown cylinder. The crown head is formed with a crown side screw portion attachably and detachably screwed to the pipe side screw portion, and an engaging end face brought into contact with and separated from the locking face. The cover pipe is arranged to be more proximate to the crown cylinder than the engaging end face. Thereby, the hand setting stem pipe is covered by the cover pipe and the covered state is maintained regardless of a movement in an axial direction of the crown.

Abstract: A timepiece movement having at least two regulating members with their escapement and elements for alternately stopping and releasing the operation of the regulating members, such that a single regulating member is thus driven at any one time by means of the energy source of the timepiece.

Abstract: A spring device having an inside-end wheel that moves in conjunction with the inside end of a mainspring; an outside-end wheel that moves in conjunction with the outside end of the mainspring; a torque return unit that transfers part of the output torque of the mainspring from one to the other of the inside-end wheel and outside-end wheel; a duration time indicating unit that operates in conjunction with both the inside-end wheel and outside-end wheel and indicates the number of winds in the mainspring; and a torque transfer clutch unit that disengages torque transfer between the inside-end wheel and outside-end wheel by means of the torque return unit when the mainspring unwinds and the duration time indicating unit indicates a predetermined reference number of winds.

Abstract: A time adjustment device having a satellite signal reception unit that receives satellite signals containing satellite time information transmitted from a positioning information satellite; a time information generating unit that generates time information; and a time information adjustment unit that adjusts the time information based on the satellite time information received by the satellite signal reception unit. The satellite signal reception unit includes a positioning information satellite selection unit that selects the positioning information satellite from which the satellite time information is received; and the positioning information satellite selection unit selects a positioning information satellite based on variation in the transmission frequency of the satellite signal transmitted from the positioning information satellite.