EP 1164441 A1 20011219 - MECHANICAL TIMEPIECE HAVING TRAIN WHEEL OPERATION CONTROLLER
Title (en)
MECHANICAL TIMEPIECE HAVING TRAIN WHEEL OPERATION CONTROLLER
Title (de)
MECHANISCHE UHR MIT EINER RÄDERWERKSSTEUERUNGSEINHEIT
Title (fr)
MONTRE MECANIQUE AVEC UNITE DE COMMANDE DE ROUAGE
Publication
Application
Priority
JP 9907290 W 19991224
Abstract (en)
A mechanical type timepiece of the invention is provided with a mainspring constituting a power source, a front train wheel rotated by rotational force when the mainspring is rewound and an escapement & speed control apparatus for controlling rotation of the front train wheel. The escapement & speed control apparatus includes a balance with hairspring alternately repeating right-hand rotation and left-hand rotation, an escape wheel & pinion rotated based on rotation of the front train wheel and a pallet fork for controlling rotation of the escape wheel & pinion based on operation of the balance with hairspring. The balance with hairspring includes a hairspring, a balance stem and a balance wheel. The mechanical type timepiece according to the invention further includes a crystal oscillator constituting an oscillation source, IC including a dividing unit for inputting an output signal outputted by oscillation of the crystal oscillator, dividing the signal and outputting a signal with regard to time and a power source for operating IC and is provided with a time measuring unit for counting time and a train wheel operation detecting unit for detecting a rotational operation state of the train wheel. The mechanical type timepiece according to the invention is further provided with a train wheel operation control unit for controlling operation of the train wheel based on a count signal counted by the time measuring unit and an operational state signal indicating a rotational operation state of the train wheel detected by the train wheel operation detecting unit. <IMAGE>
IPC 1-7
IPC 8 full level
G04C 3/04 (2006.01); G04C 3/08 (2006.01); G04C 10/00 (2006.01); G04C 11/00 (2006.01)
CPC (source: EP)
G04C 3/04 (2013.01); G04C 3/047 (2013.01); G04C 3/08 (2013.01); G04C 10/00 (2013.01); G04C 11/00 (2013.01)
Citation (search report)
See references of WO 0148565A1
Designated contracting state (EPC)
CH DE GB LI
DOCDB simple family (publication)
WO 0148565 A1 20010705; CN 1347520 A 20020501; CN 1434933 A 20030806; EP 1164441 A1 20011219; EP 1241538 A1 20020918; EP 1241538 A4 20050615; HK 1046170 A1 20021227; WO 0148567 A1 20010705
DOCDB simple family (application)
JP 9907290 W 19991224; CN 00806505 A 20000208; CN 00819167 A 20000208; EP 00902142 A 20000208; EP 99961377 A 19991224; HK 02107368 A 20021009; JP 0000679 W 20000208