Patent ID: 7318670

Claim:
Push-piece crown control device for a watch, comprising: a support part ( 1 ) that can be attached to the watchcase ( 3 ) or may consist of the watchcase ( 3 ) itself, this support part ( 1 ) having an opening, a part ( 10 ) entraining rotation that can be connected with a movement (M) of the watch in order to control a first and a second function of the watch, a crown ( 4 ) comprising a head ( 5 ) and an extension ( 6 ) integral with the head ( 5 ) and mounted into said opening so as to be mobile relative to the support part ( 1 ), said extension ( 6 ) being able to cooperate with a control element ( 25 ) for a third function of the watch that is located inside the watch-case ( 3 ), coupling means ( 13 , 14 , 15 , 16 ) acting so as to make the entraining part ( 10 ) and the extension ( 6 ) of crown ( 4 ) move together in rotation as well as in translation in the direction of pulling, crown ( 4 ) being able when the watch is fitted with the device, to occupy a first stable axial position and a second stable axial position where it is pulled, positions in which the rotation of the entraining part ( 10 ) imparted by crown ( 4 ) controls the first and second function, respectively, the crown ( 4 ) being able in addition to be pushed independently of the entraining part ( 10 ) from its first axial position up to an axial position of activation of the control element ( 25 ), and first elastic means ( 17 ) arranged between the entraining part ( 10 ) and the crown's head ( 5 ) and exerting a force that suffices to overcome the resistance offered by the entraining part ( 10 ) during the change from the second to the first axial position of the crown ( 4 ), characterised in that it comprises in addition: second elastic means ( 18 ) arranged between the support part ( 1 ) and the crown's head ( 5 ), and able to be compressed during the change of crown ( 4 ) from its first axial position to the position of activation of the control element ( 25 ), in order to return the crown ( 4 ) to its first axial position once the stress exerted by pushing the crown ( 4 ) has ceased.