Moon phase display mechanism
AssigneeBlancpain SA
InventorsEdmond CAPT, Julien Feyer, Julien Behra
Life of this patent
Estimating the term…
Abstract
Moon phase display mechanism comprising an input pinion which makes three revolutions, respectively two revolutions, in 24 hours, and drives a 19-tooth or respectively 29-tooth drive pinion, which drives a 59-tooth lower wheel bearing a moon disc with a two-coloured depiction including a lighted area and at least one background sky area and also drives a 57-tooth or respectively 58-tooth, upper wheel, coaxial to this lower wheel and which makes one revolution per day and which includes a sky disc with a depiction of the sun, and an aperture opposite this sun, through which is visible one part of this moon disc illustrating the current appearance of the moon.
Claims11
A moon phase display mechanism arranged to cooperate with a timepiece movement, and comprising an input pinion arranged to make three revolutions, or respectively two revolutions, in 24 hours, wherein said input pinion carries and/or drives either directly, or via a friction means, at least one 19-tooth, or respectively 29-tooth, drive pinion, and wherein a said drive pinion drives a 59-tooth lower wheel bearing a moon disc with a two-coloured depiction comprising a lighted area and one, or respectively two, background sky areas, and wherein a said drive pinion drives a 57-tooth or respectively 58-tooth, upper wheel, coaxial to said lower wheel and which makes one revolution per day and which includes, on the side of the user, a sky disc with a depiction of the sky and of an off-centre sun, and including an off-centre aperture substantially opposite said sun and through which one part of said moon disc is visible illustrating the current appearance of the moon.
Dependencies are inferred from the claim text.