Abstract: The invention relates to an ultrasonic motor, an electronic timepiece, and an electronic apparatus, which includes an ultrasonic rotor formed from a base resin of thermoplastic resin. Moreover, the invention includes an ultrasonic rotor which contacts with an ultrasonic stator under pressure, the ultrasonic rotor being formed from a filler containing resin. Alternatively an electronic timepiece with the ultrasonic motor is constructed. Furthermore, an electronic apparatus with the ultrasonic motor which is constructed.

Abstract: The present invention relates to an electronic timepiece. Moreover, the present invention relates to a conductive spring which can be used in an alarm electronic timepiece, or the like. Also the present invention is constituted to include one or more curved sections so as to be deformable, and constitutes a conductive spring formed from a filler containing resin. Alternatively it constitutes an electronic timepiece in which this conductive spring is used for transferring a buzzer signal. Furthermore it constitutes a conductive part comprising this conductive spring and a housing which retains the conductive spring.

Abstract: The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.

Abstract: An analog electronic timepiece has a rotor mounted to undergo rotation. A first indicator wheel has a first cylindrical portion and undergoes rotation in accordance with rotation of the rotor. A second indicator wheel is coaxial with the first indicator wheel and undergoes rotation in accordance with rotation of the first indicator wheel. The second indicator wheel has a second cylindrical portion extending through the first cylindrical portion of the first indicator wheel. A third indicator wheel is coaxial with the first and second indicator wheels and undergoes rotation in accordance with rotation of the second indicator wheel. The third indicator wheel having a shaft portion extending through the second cylindrical portion the second indicator wheel.

Abstract: To improve poor operability of attaching and detaching an hour hand when an hour hand having large moment of inertia is attached to a cylindrical portion of an hour wheel, an analog electronic timepiece of the invention is provided with a rotor, a second wheel & pinion decelerated to rotate based on rotation of the rotor, a center wheel & pinion decelerated to rotate based on rotation of the second wheel & pinion and an hour wheel decelerated to rotate based on rotation of the center wheel & pinion. The second wheel & pinion includes a cylindrical portion, the center wheel & pinion includes a cylindrical portion and the hour wheel includes a shaft portion. The second wheel & pinion, the center wheel & pinion and the hour wheel are coaxially rotated.

Abstract: According to a rate adjusting method, the movement of a mechanical timepiece is first assembled. The assembled movement is then disposed in a vertical position, and the rate is measured with respect to a plurality of vertical positions. On the basis of the result of this rate measurement, the magnitude and direction of the positional difference vector are calculated. On the basis of the result of this calculaton, the amount of weight to be added to or subtracted from the annular balance of the movement is calculated and the positions on the annular balance where this amount of weight is to be added to or to be subtracted from is calculated. Based on the results of these calculations, the amount of weight is added to or subtracted from the annular balance at the calculated positions.

Abstract: In a mechanical timepiece according to the invention, a movement 100 includes a balance magnet 140e, a coil 180 and an attitude detecting apparatus 610. The attitude detecting apparatus 610 includes a spherical case, a plurality of patterns arranged at an inner face of the case and a metal ball contained in the case. The attitude detecting apparatus is constituted to detect attitudes of the mechanical timepiece by bringing the metal ball into contact with the patterns. There is constructed a constitution in which operation of a balance with hairspring 140 is controlled based on a result of detecting the attitude of the mechanical time piece detected by the attitude detecting apparatus 610.

Abstract: A mechanical time piece has a mainspring for generating a rotational force and a front train wheel for undergoing rotation in accordance with a rotational force generated by the mainspring. An escapement and speed control apparatus controls rotation of the front train wheel and has a timed annular balance for undergoing reciprocal rotational movement, an escape wheel and pinion for undergoing rotation in accordance with rotation of the front train wheel, and a pallet fork for controlling rotation of the escape wheel and pinion in accordance with rotational movement of the timed annular balance. A switch mechanism outputs an ON signal when a rotational angle of the timed annular balance becomes equal to or larger than a predetermined threshold angle and outputs an OFF signal when the rotational angle of the timed annular balance does not exceed the threshold angle.

Abstract: A power reserve mechanism has a ratchet wheel having a winding stem, a first winding stem train wheel connected to the winding stem of the ratchet wheel and having a first power reserve wheel, and a barrel member having a winding stem. A spring member is mounted in the barrel member. A second winding stem train wheel independent from the first winding stem train wheel is connected to the winding stem of the barrel member and has a second power reserve wheel. A first indicator is disposed on the first power reserve wheel. A second indicator is disposed on the second power reserve wheel. An amount of spring power stored by the spring member is indicated utilizing a relative variation in movement between the first and second indicators.

Abstract: To provide a hairspring main body having small variation in spring property even in an inclined state by enabling to minimize individual difference and difficult to undergo influence of static electricity or external magnetic field, a hairspring structure capable of being easily integrated accurately in a state of restraining individual difference to a minimum, a speed control mechanism having small variation in a property caused by an inclined state or individual difference and a movement using the same. A hairspring structure of a speed control mechanism of a movement includes a hairspring main body made of carbon nanofiber and a hairspring attaching portion made of carbon nanofiber integrally molded with the main body, coupled to one end portion of the main body and substantially rigid.

Abstract: A mechanical timepiece has a power source comprised of a mainspring for undergoing rewinding movement to generate a rotational force. A front train wheel undergoes rotation in accordance with a rotational force generated during rewinding movement of the mainspring. An escapement/speed-control device controls rotation of the front train wheel. The escapement/speed-control device has a balance with a hairspring for undergoing alternately repeating rotational movement in left and right directions. An escape wheel and pinion undergoes rotation in accordance with rotation of the front train wheel. A pallet fork controls rotation of the escape wheel and pinion in accordance with rotational movement of the balance. A switch mechanism outputs an ON signal when a rotation angle of the balance reaches a predetermined threshold angle or greater, outputs an OFF signal when the rotation angle of the balance does not exceed the predetermined threshold angle.

Abstract: A transmission wheel comprises a gear having a hole and a pinion having a plurality of teeth and being removably mounted in the hole of the gear. The hole of the gear has at least one chord-shaped stop portion engaging two adjacent teeth of the pinion to prevent relative rotation between the pinion and the gear.

Abstract: A chronograph timepiece has a barrel mounted for undergoing rotation and a front train wheel for undergoing rotation in accordance with rotation of the barrel. A second counter intermediate wheel undergoes rotation in accordance with rotation of the front train wheel. A second counting wheel undergoes rotation in accordance with rotation of the second counter intermediate wheel in a chronograph measurement mode. A chronograph second display member displays a measurement result corresponding to an elapsed period of time in accordance with rotation of the second counting wheel. A minute counting train wheel undergoes rotation in accordance with rotation of the second counting wheel. A chronograph minute display member displays a measurement result corresponding to an elapsed period of time in accordance with rotation of the minute counting train wheel. At least one hour counting train wheel undergoes rotation in accordance with rotation of the barrel complete in the chronograph measurement mode.

Abstract: To reduce a number of parts constituting a spring winding state display device and downsize a movement, a device including a first sun wheel installed with a first sun wheel gear 152 and a first sun wheel arbor 154. A second sun wheel 160 is provide with a second sun wheel gear 162 and a second sun wheel pinion 164. The second sun wheel gear 162 is in mesh with an intermediate ratchet wheel 140. A planetary reduction wheel gear 170 is in mesh with a barrel gear 126. A first planetary wheel 172 and a second planetary wheel 174 are rotatably arranged to a planetary reduction wheel gear 170 with centers of rotation thereof disposed at portions different from a center of rotation of the planetary reduction wheel gear 170. The first planetary wheel 172 rotates while revolving around the second sun wheel pinion 164. The second planetary wheel 174 rotates while revolving around the first sun wheel gear 152. A sun wheel finger 180 is attached to a third axle portion 154c such that it can slip.