Chinese mechanical calendar timepiece

A watch includes a mechanical or electromechanical timepiece movement, analog time indicators, a lunar indicator indicating lunar date on a scale and driven by the timepiece movement to perform one revolution in one or two synodic months, and Chinese calendar indicator members actuated by a calendar...

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Main Authors Vuilleumier, Alain, Meylan, Frédéric
Format Patent
LanguageEnglish
Published 10.08.2010
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Abstract A watch includes a mechanical or electromechanical timepiece movement, analog time indicators, a lunar indicator indicating lunar date on a scale and driven by the timepiece movement to perform one revolution in one or two synodic months, and Chinese calendar indicator members actuated by a calendar mechanism driven from the lunar indicator. A month moving part provided with an indicator of lunar months is driven via a rocking lever so as to perform one revolution per ordinary year of twelve months and per leap year of thirteen months. The other Chinese calendar indicators are driven from the month moving part and comprise a first year indicator performing one revolution in twelve years, a second year indicator performing one revolution in ten years, and a third year indicator performing one revolution in nineteen years and associated with a cam representing the Chang cycle of ordinary years and leap years.
AbstractList A watch includes a mechanical or electromechanical timepiece movement, analog time indicators, a lunar indicator indicating lunar date on a scale and driven by the timepiece movement to perform one revolution in one or two synodic months, and Chinese calendar indicator members actuated by a calendar mechanism driven from the lunar indicator. A month moving part provided with an indicator of lunar months is driven via a rocking lever so as to perform one revolution per ordinary year of twelve months and per leap year of thirteen months. The other Chinese calendar indicators are driven from the month moving part and comprise a first year indicator performing one revolution in twelve years, a second year indicator performing one revolution in ten years, and a third year indicator performing one revolution in nineteen years and associated with a cam representing the Chang cycle of ordinary years and leap years.
Author Vuilleumier, Alain
Meylan, Frédéric
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References Dinger (6272076) 20010800
Gale (96792) 18691100
Klaus et al. (4674889) 19870600
Barton (7251198) 20070700
Helmer Aslaksen: "The Mathematics of the Chinese Calendar," May 13, 2004, pp. 1-52.
CD containing LeapMonths. nb, Mathematica package 1999 available on the site www.math.nus.edu.sg.
Mejaski (5457663) 19951000
Nachum Dershowitz and Edward M. Reingold, "The Chinese Calendar" from Calendrical Calculations, Cambridge University Press, 1997, pp. 241-264.
Kraushaar et al. (4055749) 19771000
International Search Report issued in corresponding application No. PCT/EP2006/057148, completed Mar. 29, 2006 and mailed Apr. 6, 2006.
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Snippet A watch includes a mechanical or electromechanical timepiece movement, analog time indicators, a lunar indicator indicating lunar date on a scale and driven by...
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Title Chinese mechanical calendar timepiece
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