Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means

GPHYSICS G04Horology G04CELECTROMECHANICAL CLOCKS OR WATCHES

G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means

G04C3/001Electromechanical switches for setting or display G04C3/002Position G04C3/004Magnetically controlled G04C3/005Multiple switches G04C3/007Electromechanical contact-making and breaking devices acting as pulse generators for setting G04C3/008Mounting, assembling of components G04C3/02wherein movement is regulated by a pendulum G04C3/021using mechanical coupling G04C3/022with constant impulses G04C3/024using other coupling means G04C3/025using more than one pendulum G04C3/027using electro-magnetic coupling between electric power source and pendulum G04C3/0271the pendulum controlling contacts and mechanically driving the gear-train G04C3/0273the pendulum controlling contacts, thereby electromagnetically driving the gear-train or several gear-trains G04C3/0275the pendulum controlling contacts, the pendulum driving electro-magnet simultaneously driving the gear-train G04C3/0276the pendulum controlling indirectly, i.e. without mechanical connection, contacts G04C3/0278the pendulum controlling the gear-train by means of static switches G04C3/033using torsion pendulums using conical pendulums G04C3/0335using conical pendulums G04C3/04wherein movement is regulated by a balance G04C3/042using mechanical coupling G04C3/045with constant impulses G04C3/047using other coupling means G04C3/06using electro-magnetic coupling between electric power source and balance G04C3/061the balance controlling contacts and mechanically driving the gear-train G04C3/062the balance controlling contacts, the gear-train or several gear-trains being driven electro-magnetically thereby G04C3/063the balance controlling contacts, the balance driving electro-magnet simultaneously driving the gear-train G04C3/064the balance controlling indirectly, i.e. without mechanical connection, contacts G04C3/065the balance controlling gear-train by means of static switches G04C3/066Constructional details G04C3/067Driving circuits with distinct detecting and driving coils G04C3/068provided with automatic control G04C3/069Driving circuits using a single coil for detection and driving purposes G04C3/08wherein movement is regulated by a mechanical oscillator other than a pendulum or balance G04C3/10driven by electro-magnetic means G04C3/101constructional details G04C3/102of the mechanical oscillator or of the coil G04C3/104of the pawl or the ratched-wheel G04C3/105pawl and ratched-wheel being magnetically coupled G04C3/107Controlling frequency or amplitude of the oscillating system G04C3/108Driving circuits G04C3/12driven by piezo-electric means driven by magneto-strictive means G04C3/125driven by magneto-strictive means G04C3/14incorporating a stepping motor G04C3/143Means to reduce power consumption by reducing pulse width or amplitude and related problems G04C3/146incorporating two or more stepping motors or rotors G04C3/16incorporating an electro-dynamic continuously rotating motor G04C3/165comprising a mechanical regulating device influencing the electromotor G04C3/18incorporating electro-thermal or electro-pneumatic driving means