Patent ID: 7580324

Claim:
A drive wheel ( 10 ) for integration into a clock movement, comprising: a dented section ( 11 ) having teeth ( 12 ), the teeth configured to rotatably drive a downstream wheel ( 20 ); and a non-dented section ( 13 ) having a diameter configured such that a part-circular circumference of the drive wheel ( 10 ) in the non-dented section ( 13 ) blocks the downstream wheel ( 20 ) against rotation while teeth ( 21 ) of the downstream wheel ( 20 ) face the non-dented section, wherein the non-dented section ( 13 ) comprises at least a flexible element ( 14 ) arranged, in a direction opposite to a direction at rotation of the drive wheel ( 10 ), immediately after the dented section ( 11 ), and that comprises an elasticity essentially directed in a radial direction of the drive wheel ( 10 ) for a change of the diameter of the non-dented section ( 13 ) in a range of the flexible element ( 14 ).