Patent ID: 6871997

Claim:
Watch case comprising a case middle, a rotary bezel, first and second angular positioning markings, one set secured to the rotary bezel and the other set to the case middle and elastic means tending constantly to place said first and second positioning markings in engagement with one another, the watch case wherein the first and second positioning markings are distributed evenly over 360° with respective numbers of spacings one of which is a multiple of the other which is at least equal to 2 and the respective outlines of which extend in a plane parallel to that of said bezel, radial guide being engaged with said markings having the smallest number of spacings, said elastic means having the form of a closed-loop spring associated with each of said markings engaged with said radial guide to simultaneously exert on these markings radial pressures directed toward said other markings and to subject said closed-loop spring to angularly distributed radial forces as said rotary bezel moves.