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US 2019/0094808 A1Published application
Timepiece bearing
AssigneeRolex SA
InventorsPierre Le Fèvre, Florent Millet
Life of this patent
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Abstract
A cage (5) for separating rolling bodies (2) for a bearing (1), particularly for a timepiece bearing, the cage having first openings (50) for receiving rolling bodies and at least one first contact zone (56) intended to come into contact with a bearing ring and having at least one first hollow formation (52).
Claims20
A cage for separating rolling bodies for a bearing, particularly for a timepiece bearing, the cage comprising:
- first openings for receiving rolling bodies, and
- at least one first contact zone intended to come into contact with a bearing ring and having at least one hollow formation.
A bearing, particularly a timepiece bearing, comprising:
- a first ring,
- a second ring,
- rolling bodies, and
- a cage for separating rolling bodies,
- wherein the cage and the first and second rings are arranged so that the area of a surface (A) of the cage capable of coming into contact with the rings is less than 0.6 times the area of:
- the orthogonal projection of the cage along an axis of the bearing, when the cage is a flat annular cage;
- or
- the cylindrical surface of a cylinder having a diameter equal to the diameter of the cylinder defining the surface of the cage and included between two end edges of the cage, when the cage is a cylindrical cage.
5 more elements
Dependencies are inferred from the claim text.