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US 2006/0221771 A1Published application
Lunar phase display mechanism
AssigneeRichemont International SA
InventorsDenis Zimmermann, Rene Larsonneur, Philipp Buhler
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AssigneeRichemont International SA
InventorsDenis Zimmermann, Rene Larsonneur, Philipp Buhler
Estimating the term…
The present invention refers to a lunar phase display mechanism including an upper disc which is the lunar display disc and a lower disc mounted concentrically to this disc which is the lunar disc. One of the discs is mounted in such a way that during normal operation of the mechanism it rotates relative to the other disc. This other disc is mounted in such a way that it is in a stationary position during normal operation of the mechanism while this position can be changed by a rotary motion. Alternatively, the gear train driving the rotating disc can be so designed that the direction of rotation of this disc can be reversed. In this way the different appearance of the lunar phases at the latitudes of the earth and in particular in the northern and southern hemisphere can be taken into account in the display.
Lunar phase display mechanism comprising an upper disc which is the lunar display disc (1) and a lower disc mounted concentrically to the upper disc and which is the lunar disc (2), one of the discs (1, 2) being mounted in such a way that it rotates relative to the other disc during normal operation of the mechanism, characterised in that this other disc (1, 2) is mounted in such a way that during normal operation of the mechanism it is in a stationary position, but this stationary position being adjustable by a rotary motion in order to take into account the different appearance of the lunar phases at the latitudes of the earth, in particular that in the northern and southern hemisphere.
Lunar phase display mechanism comprising an upper disc which is the lunar display disc (1) and a lower disc mounted concentrically to the upper disc and which is the lunar disc (2), one of the discs (1, 2) being mounted in such a way that rotates relative to the other disc during normal operation of the mechanism, characterised in that the driving gear train of the rotating disc (1, 2) is so designed that the direction of rotation of this disc can be reversed in order to take into account the different appearance of the lunar phases in the northern and southern hemisphere of the earth.
Dependencies are inferred from the claim text.