Keys Or The Like With Means Preventing Overwinding (protecting Devices Arranged In, Or Attached To, The Barrel Subclass 16; In Connection With Automatic Winding Devices Subclass 20; Construction Of Removably Mounted Keys Subclass 29; Means Preventing Overwinding, Including Those Attached To The Case, Subclass 38; Protecting Means Subclass 71; Protection Against Overwinding For Electrical Winding Up Arrangements For Mechanical Clocks Subclass 443) [g04b 3/06] Patents (Class 968/36)
  • Unidirectional clutch wheel assembly, in particular for horology
    Patent number: 12259687
    Abstract: Disclosed is a unidirectional clutch wheel assembly that includes a first wheel, a second wheel coaxial with the first wheel and including an inner toothing, a rigid drive member rotationally fixed with respect to the first wheel and at least one rigid pawl connected to the rigid drive member by an elastic strip. The rigid pawl is locked against the inner toothing by the rigid drive member to rotationally fix the first and second wheels to each other when the first wheel or the second wheel is rotationally driven in a direction corresponding to coupling. The inner toothing has asymmetrical teeth. The rigid pawl is arranged, in its position locked against the inner toothing, to be in point contact, in top plan view, with two consecutive teeth of the inner toothing and with the rigid drive member.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: March 25, 2025
    Assignee: PATEK PHILIPPE SA GENEVE
    Inventors: Pascal Humair, Jean-Baptiste Le Bris