Rotation moderator
AssigneeITW de France
InventorFranck Berteau
Life of this patent
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Abstract
A stator (2), a rotor (5, 6, 7, 8), and an elastic element (3) and rolling members (4) are provided to collectively form a rotational damper. When the rotor has, with respect to the stator, a rotational movement to be moderated, the balls or rolling members (4) are driven by the rotor while remaining partially embedded in the elastic element (3), the latter having a wall (16) parallel to the end walls (10A, 10B) of the stator (2), in which the balls (4) penetrate, so as to resist and thereby dampen the rotational movement. This embodiment provides two-directional dampening. In accordance with a second embodiment, one-directional dampening is achieved by the balls (4) being disposed within variable depth recesses (24') of the rotor element (5').
Claims22
A rotational dampener, comprising:
- a rotor rotatable about a rotational axis;
- a stator;
- an elastic element fixedly mounted upon said stator and having a dampening surface extending in a direction transverse to said rotational axis of said rotor;
- and
- means mounted upon said rotor for undergoing rotational movement with said rotor with respect to said stator and said elastic element of said stator, and for engaging said dampening surface of said elastic element of said stator extending in said transverse direction so as to deform said elastic element of said stator, while said rotor, and said means mounted upon said rotor and engaging said dampening surface of said elastic element of said stator, rotates with respect to said stator and said elastic element of said stator, such that deformation of said elastic element of said stator generates dampening forces to dampen said rotational movement of said rotor.
Dependencies are inferred from the claim text.