Horological timepiece, in particular wrist watch
AssigneeGerald Genta S.A.
InventorGerald Genta
Life of this patent
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Abstract
A timepiece, particularly a wristwatch, comprising a retrograde date display presenting a graduation from 1 to 31 (2) on the dial (1) cooperating with a hand (3) driven by the mechanism which comprises a sleeve (4) comprising this hand and fast with a pinion (5) meshing with two racks (9) pivoted on a plate (6) of the movement acting in opposite direction on the pinion (5), one of said rack being submitted to the action of a return spring, whereas the free end of the other rack is maintained, by the force of said return spring, permanently against a snail cam carried by a date crown (11) pivoted on said plate (6) and driven in a known manner of one step each day by the watch movement.
Claims4
Timepiece, particularly wristwatch, comprising a retrograde date display presenting a graduation from 1 to 31 on a dial cooperating with a hand driven by a mechanism, characterized by the fact that said driving mechanism of said hand of the retrograde date display comprises a sleeve comprising said hand fast with a pinion meshing with two racks pivoted on a plate of a movement acting in opposite direction on the pinion, one of said racks being submitted to the action of a return spring whereas the free end of the other rack is maintained, by the force of this return spring, permanently against a snail cam carried by a date crown pivoted onto the said plate and driven one step of each day by the watch movement.
Dependencies are inferred from the claim text.