Abstract: A device for fastening a wristlet to a watch case includes an end body of the wristlet, at least one movable fastening element comprising a pivot part movable between an engagement position in which the pivot part is engaged with the case, and a retracted position where the pivot part is disengaged from the case, a lever movably mounted in rotation on the end body, at least one movable cam engaged with the lever to switch the movable fastening element from the engagement position to the retracted position during a rotation of the lever, where the device comprises at least one static cam fixedly mounted on the end body facing the movable cam, to impose an axial movement on the movable cam during its rotation, and the movable cam is directly formed on the movable fastening element, and arranged between the lever and the static cam.

Abstract: A device for fastening a wristlet to a watch case includes an end body of the wristlet, at least one movable fastening element comprising a pivot part movable between an engagement position in which the pivot part is engaged with the case, and a retracted position where the pivot part is disengaged from the case, a lever movably mounted in rotation on the end body, at least one movable cam engaged with the lever to switch the movable fastening element from the engagement position to the retracted position during a rotation of the lever, where the device comprises at least one static cam fixedly mounted on the end body facing the movable cam, to impose an axial movement on the movable cam during its rotation, and the movable cam is directly formed on the movable fastening element, and arranged between the lever and the static cam.

Abstract: A watch case includes a middle (2, 24, 34), one opening of which is closed by a bezel (8, 18, 28) and/or a crystal (1, 11, 21), or by a back (40). An element for closing the opening is connected to the middle by a resilient metal member (3, 23, 33) having a recessed cross-section defined by the profile of a non-rectilinear wall having a constant thickness, whose ends (3a, 3b) are connected to the periphery of the closing element (1, 11, 21, 18), respectively. The profile of the non-rectilinear wall defines at least one annular fold having an orientation parallel to the plane of the opening, the fold being formed by a curvature whose arc defines an angle of between >90° and 180°, so as to impart to the closing member (1, 11, 21, 18) a freedom of movement relative to the plane of the opening.

Abstract: The invention relates to a watch case including a middle (2, 24, 34), one opening of which is closed by a bezel (8, 18, 28) and/or a crystal (1, 11, 21), or by a back (40). At least one of the elements for closing the opening is connected to the middle by a resilient metal member (3, 23, 33) having a recessed cross-section defined by the profile of a non-rectilinear wall having a constant thickness and the ends (3a, 3b) of which are connected to the periphery of said closing element (1, 11, 21, 18) of said middle (2, 24, 34), respectively. The profile of said non-rectilinear wall defines at least one annular fold having an orientation parallel to the plane of said opening, said fold being formed by a curvature, the arc of which defines an angle of between >90° and 180°, so as to impart to said closing member (1, 11, 21, 18) a freedom of movement relative to the plane of the opening.