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Moon phase display device, particularly for a timepiece

A technology of moon phases and timepieces, applied in the field of devices displaying moon phases, which can solve problems such as large devices, inability to combine watches, and difficulty in reading display devices

Active Publication Date: 2004-12-01
THE SWATCH GRP RES & DEVELONMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device disclosed in this document is too bulky to be incorporated in a watch
Also, such displays are difficult to read without backlighting

Method used

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  • Moon phase display device, particularly for a timepiece
  • Moon phase display device, particularly for a timepiece
  • Moon phase display device, particularly for a timepiece

Examples

Experimental program
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Embodiment Construction

[0019] Refer to attached Figures 1 to 4 , the moon phase display device comprises a dial 1, which may be the dial of a watch equipped with the device, which has a circular hole 2 through which the observer can see a plate-shaped movement indicator 3, which is located directly behind the dial 1 move in its own plane. in the attached Figure 5 As can be seen more clearly in , the upper surface of the indicator 3 is divided into a dark area 4 and a light area 5 , which are separated by an approximately S-shaped curve 6 . The separation line 6 is axially symmetrical with respect to the center point of the curve C. Point C coincides with pivot axis 8 of indicator 3 . It is generally preferred to use black for dark areas 4 and yellow for light areas 5 in moon phase displays, but other colors can also be used. The words "dark" and "bright" used here to define areas 4 and 5 of the indicator have only a relative meaning and should not be interpreted as being able to denote shadows...

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Abstract

The device includes an indicator (3) in the shape of a plate, moving behind a dial (1) having a circular aperture (2), which represents the lunar disc. The indicator includes an S-shaped line of separation (6) between a dark zone (4) and a light zone (5) representing the non-illuminated part and the illuminated part of the moon in the aperture. The indicator is rotatably mounted at the centre of symmetry C of the line of separation (6) on a rotating support making two revolutions per lunation. An image matching the appearance of the moon in each phase is thus obtained. Such a device can be used particularly in a watch or another timepiece.

Description

technical field [0001] The present invention relates to a device for displaying moon phases, especially a device for displaying moon phases in watches or other timepieces, comprising a dial with a circular hole, a disc-shaped movement indicator moving behind the dial, and Between the dark and light areas there is a roughly S-shaped dividing line visible through a circular hole, the indicator has an axis of rotation passing through the center of symmetry of the dividing line, is rotatably mounted on a disc and is set to rotate for each lunar month An input element for the number of turns, and a transmission mechanism ensuring a kinematic connection between the input element and the indicator. Background technique [0002] In a conventional moon phase display device, such as that described in US Patent No. 508 467, a master disk with two images of the full moon rotates one and a half revolutions per lunar month behind a specially shaped semicircular window. One side of the wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B19/26
CPCG04B19/268
Inventor G·雷-默梅特
Owner THE SWATCH GRP RES & DEVELONMENT LTD
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