Classifications

• • G—PHYSICS
  • G04—HOROLOGY
  • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
  • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
  • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
• • G—PHYSICS
  • G04—HOROLOGY
  • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
  • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
  • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
  • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
• • G—PHYSICS
  • G04—HOROLOGY
  • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
  • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
  • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
  • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
  • G04D7/1235—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring for the control mechanism only (found from outside the clockwork)
  • G04D7/125—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring for the control mechanism only (found from outside the clockwork) for measuring frequency
• • G—PHYSICS
  • G04—HOROLOGY
  • G04G—ELECTRONIC TIME-PIECES
  • G04G3/00—Producing timing pulses
  • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
• • G—PHYSICS
  • G04—HOROLOGY
  • G04G—ELECTRONIC TIME-PIECES
  • G04G5/00—Setting, i.e. correcting or changing, the time-indication
  • G04G5/02—Setting, i.e. correcting or changing, the time-indication by temporarily changing the number of pulses per unit time, e.g. quick-feed method

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electromechanical Clocks (AREA)
• Control Of Stepping Motors (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4377166

Family Applications (2)

Family Applications After (1)

Country Status (5)

Families Citing this family (3)

Family Cites Families (1)

• 1974
  • 1974-08-30 CH CH1181874D patent/CH1181874A4/xx unknown
  • 1974-08-30 CH CH1181874A patent/CH593513B5/xx not_active IP Right Cessation
• 1975
  • 1975-08-01 GB GB3220975A patent/GB1509458A/en not_active Expired
  • 1975-08-19 FR FR7525650A patent/FR2283478A1/fr active Granted
  • 1975-08-28 JP JP10448875A patent/JPS5150760A/ja active Granted
• 1979
  • 1979-04-26 HK HK27179A patent/HK27179A/xx unknown

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