Patent ID: 7023762

Claim:
A date display assembly for a timepiece, wherein the timepiece comprises a casing, an hour wheel that is rotationally engaged with a meshing wheel, and a display window for displaying a date, the date display assembly comprising: an outer date ring having a plurality of digits thereon and aligned in the casing such that each of the plurality of digits is appearable in the display window, wherein the underside of the outer date ring comprises at least two signaling notches spaced apart from one another; a date wheel, rotatably engageable with the meshing wheel, for rotating the outer date ring in a first direction; an inner date ring driving wheel, having a plurality of alternating large and small slots for rotating an inner date ring in a direction opposite the first direction; and an inner date ring having a plurality of digits thereon and also aligned in the casing such that each of the plurality of digits is appearable in the display window, the inner date ring having a plurality of alternating large and small teeth on the underside surface thereof that respectively engage the plurality of large and small slots, wherein the at least two signaling notches engage the plurality of large slots of the inner date driving wheel and the plurality of alternating large and small slots of the inner date driving wheel cause the rotation of the inner date ring.