Patent ID: 7556422

Claim:
Push-actuated control device for watches comprising a push-piece button ( 1 ) connected with a push-piece shaft ( 2 ) passing through a push-piece pipe ( 3 ) accommodated in the watchcase, the device further comprising a compression ring ( 4 ) screwed onto the push-piece pipe ( 3 ) and a compression gasket ( 5 ) placed between pipe ( 3 )and ring ( 4 ), the gasket ( 5 ) being comprised while ring ( 4 ) is in a screwed first position, characterised in that compression ring ( 4 ) on a segment of its inner circumference includes a twofold axial stop ( 4 . 1 , 4 . 2 ), and that push-piece button ( 1 ) includes a projection ( 1 . 1 ) on its outer circumference, such that compression ring ( 4 ) cooperates with push-piece button ( 1 ) to block the push-piece button ( 1 ) in its first position, and liberate it in an unscrewed second position.