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Timepiece with calendar display

A clock and indicator technology, applied in the field of clocks and watches, can solve problems such as inaccurate periods

Active Publication Date: 2007-01-10
FREDERIC PIGUET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this cycle is not precise in the long run

Method used

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  • Timepiece with calendar display
  • Timepiece with calendar display
  • Timepiece with calendar display

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] figure 1 The watch shown in (its exterior not shown) comprises, in a conventional manner, a case housing a mechanical or electromechanical watch movement for actuating an analog time display. Here, the analog time display comprises a minute hand 4 and an hour hand 5 which rotate above a dial 6 provided with an hour ring 7 . The watch may also include a conventional calendar display, for example of the Julian type, driven once a day by the watch movement, which is not shown in this figure. A crown 8 attached to a conventional control stem 9 enables the manual adjustment of the hours and date and, if the movement is mechanical, also allows the movement to be wound. Other manual controls are formed by buttons 10 and 11, the function of which will be explained below.

[0030] The watch also includes a lunar display comprising 4 indicators associated with the dial 6, namely: a lunar date indicator 12 formed by a disc, part of which is visible through a window 13 of the dia...

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PUM

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Abstract

A timepiece includes a Chinese calendar display device indicating lunar date and lunar month, taking account of bissextile months, and: a control lever actuated each day by a drive wheel of the timepiece movement; a lunar month indicator associated with a month star-wheel; a lunar date indicator associated with a date wheel set including a date wheel moved forward one step each day by the control lever, a lunar month length indicator coupled to a selector, having two positions manually controlled and alternately defining two different stop positions for the lever, respectively corresponding to a long month and to a short month, the control lever moves the date wheel forward one extra step at the end of short months; and a month indicator coupled to a bissextile month selector, having two positions manually controlled and that moves the month star-wheel back one step at the start of bissextile months.

Description

technical field [0001] The invention relates to a timepiece provided with a calendar mechanism actuated daily by a timepiece movement and capable of displaying dates according to the traditional lunar calendar (Chinese calendar). Background technique [0002] Currently, the lunar calendar is still used to set dates for various festivals and for Chinese astrology. The lunar calendar is a lunosolar type because the lunar calendar is based on lunar months that all begin on the day of the new moon, and the length of the lunar year is varied to be as close as possible to the tropical year. [0003] The lunar year begins on the second new moon after the winter solstice, with few exceptions. Since the length of the lunar month is not constant and its average (29.53088 days) is not equal to a whole number of days, the lunar calendar includes large months with 30 days and small months with 29 days. The cycle of the big moon and the small moon cannot be defined yet. [0004] Furthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B19/24
CPCG04B19/25G04B19/253
Inventor M·罗沙
Owner FREDERIC PIGUET
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