Abstract: A method for producing a timepiece spring includes a step for producing, by casting, a metallic glass raw material constituted of a metallic glass; a step for heating the metallic glass raw material to achieve a superplastic state; and a step for rolling the metallic glass raw material in a superplastic state to produce a sheet material. A timepiece spring is characterized by being obtained by the method for producing a timepiece spring.

Abstract: A method for producing a timepiece spring includes a step for producing, by casting, a metallic glass raw material constituted of a metallic glass; a step for heating the metallic glass raw material to achieve a superplastic state; and a step for rolling the metallic glass raw material in a superplastic state to produce a sheet material. A timepiece spring is characterized by being obtained by the method for producing a timepiece spring.

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: A timepiece includes a dial having a tens date display window for displaying the tens digit of the date, and a ones date display window for displaying the ones digit of the date; and a calendar mechanism having a tens indicator wheel to which a plurality of tens digit markers are disposed and a ones indicator wheel to which a plurality of ones digit markers are disposed, and which displays one of the plural tens digit markers disposed to the tens indicator wheel from the tens date display window, and displays one of the plural ones digit markers disposed to the ones indicator wheel from the ones date display window. The ones indicator wheel has a ones indicator plate on which the ones digit markers are disposed, and a ones indicator pinion affixed to the ones indicator plate. The tens indicator wheel has a tens indicator plate on which the tens digit markers are disposed, and a tens indicator pinion affixed to the tens indicator plate.

Abstract: A printing device, including: a mechanical energy storage mechanism for storing mechanical energy; and a mechanical energy application mechanism for carrying a sheet and/or printing on the sheet, using the mechanical energy stored.

Abstract: A timepiece includes a dial having a tens date display window for displaying the tens digit of the date, and a ones date display window for displaying the ones digit of the date; and a calendar mechanism having a tens indicator wheel to which a plurality of tens digit markers are disposed and a ones indicator wheel to which a plurality of ones digit markers are disposed, and which displays one of the plural tens digit markers disposed to the tens indicator wheel from the tens date display window, and displays one of the plural ones digit markers disposed to the ones indicator wheel from the ones date display window. The ones indicator wheel has a ones indicator plate on which the ones digit markers are disposed, and a ones indicator pinion affixed to the ones indicator plate. The tens indicator wheel has a tens indicator plate on which the tens digit markers are disposed, and a tens indicator pinion affixed to the tens indicator plate.

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: A printing device, including: a mechanical energy storage mechanism for storing mechanical energy; and a mechanical energy application mechanism for carrying a sheet and/or printing on the sheet, using the mechanical energy stored.

Abstract: A printing device, including: a mechanical energy storage mechanism for storing mechanical energy; and a mechanical energy application mechanism for carrying a sheet and/or printing on the sheet, using the mechanical energy stored.

Abstract: A drive apparatus improves drive efficiency while reducing device size, and a lens unit and a camera using the drive apparatus. A cam member is driven rotationally by vibration of an oscillator in the lens unit and thereby causes lenses to move forward and backward. The construction and operation of the drive apparatus supplants the need for a complicated drive mechanism using an electromagnetic motor and incumbent gears or cam rings. The simplified drive apparatus enables the device in which it is embodied to be made compact. Driving the lenses by means of a cam member minimizes energy loss due to friction, and thus sufficiently improves drive efficiency.

Abstract: A printing device, including: a mechanical energy storage mechanism for storing mechanical energy; and a mechanical energy application mechanism for carrying a sheet and/or printing on the sheet, using the mechanical energy stored.

Abstract: A drive apparatus improves drive efficiency while reducing device size, and a lens unit and a camera using the drive apparatus. A cam member is driven rotationally by vibration of an oscillator in the lens unit and thereby causes lenses to move forward and backward. The construction and operation of the drive apparatus supplants the need for a complicated drive mechanism using an electromagnetic motor and incumbent gears or cam rings. The simplified drive apparatus enables the device in which it is embodied to be made compact. Driving the lenses by means of a cam member minimizes energy loss due to friction, and thus sufficiently improves drive efficiency.

Abstract: In a pulse meter, a motion detector detects motion components generated along with changes in the shape of a mounting area on the body, and outputs a motion detection signal to a transmitter. A pulse wave detector detects pulse wave components and outputs a pulse wave detection signal to the transmitter. A pulse rate calculator calculates the pulse rate on the basis of the motion detection signal and the pulse wave detection signal. Motion components can be removed from pulse wave components and the pulse rate can be accurately calculated even when motion components with low acceleration are generated.

Abstract: A winding stem (10) is connected to an inner end (11a) of a mainspring (11), and an outer end (11b) of the mainspring (11) is connected to a barrel drum (12). A braking plate (15) is placed inside a braking case (14), and the braking case (14) is filled with a fluid (16). An uneven joint portion (10b) is formed at the lower end of the winding stem (10), and is engaged with an uneven joint portion (15b) of the braking plate (15) placed in the braking case (14). By adopting the above configuration which can simplify the structure of the mainspring mechanism having the braking plate and which can reduce the number of components, the size and production cost of the mainspring mechanism can be reduced.

Abstract: A winding stem (10) is connected to an inner end (11a) of a mainspring (11), and an outer end (11b) of the mainspring (11) is connected to a barrel drum (12). A braking plate (15) is placed inside a braking case (14), and the braking case (14) is filled with a fluid (16). An uneven joint portion (10b) is formed at the lower end of the winding stem (10), and is engaged with an uneven joint portion (15b) of the braking plate (15) placed in the braking case (14). By adopting the above configuration which can simplify the structure of the mainspring mechanism having the braking plate and which can reduce the number of components, the size and production cost of the mainspring mechanism can be reduced.

Abstract: An electronic wristwatch having an electric generator contained internally therein is provided. The generator converts energy from mechanical to electrical energy to drive the electronic wristwatch. The oscillation of an oscillating weight produces mechanical energy as it oscillates. A wheel train transmits the mechanical energy to the generator by applying a torque to the generator. A limiter prevents transmission of mechanical energy through the wristwatch when the torque to be applied to the generator exceeds a predetermined value and allows the mechanical energy to be transmitted when the torque to be applied to the generator is less than or equal to the predetermined value.

Abstract: A switch structure for an electronic timepiece including a multi-position external operational member is provided. The structure includes a click lever and a switch lever, each operationally engaged with the external operational member. Rotation of the external operational member pivots the switch lever for making a first switching connection. Axial displacement of the external operational member shifts the switch lever for making a second switching action upon operation of the external operational member. In a digital electronic timepiece including the switch structure, adjustment of time may be made when the click lever is in a first position and a calendar adjustment may be made once the click lever is in a second position.