Torque limiter having over-speed protection
AssigneeMoog Inc.
InventorLowell Van Lund LARSON
Life of this patent
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Abstract
An apparatus for connecting a rotational drive member to a rotational driven member brakes rotation when either the torque transmitted between the members exceeds a predetermined torque limit or the rotational speed of the drive member exceeds a predetermined rotational speed limit. The apparatus includes a torque limiter configured to actuate a braking mechanism or disconnect transmission when the torque limit is exceeded, and an over-speed governor configured to trigger the torque limiter when the rotational speed of the input element exceeds the rotational speed limit. The over-speed governor may trigger the torque limiter by reducing the torque limit of the torque limiter, or by introducing rotational drag in the apparatus to increase transmitted torque.
Claims18
An apparatus for connecting a rotational drive member to a rotational driven member, the apparatus comprising:
- a structural ground;
- an input element rotatable relative to the structural ground;
- an output element rotatable relative to the structural ground;
- a torque limiter connecting the output element to the input element for rotation with the input element, wherein the torque limiter is actuated to brake rotation of the input element and the output element, or to disconnect the input element from the output element, when torque transmitted between the input element and the output element exceeds a torque limit;
- and
- an over-speed governor configured to cause actuation of the torque limiter to brake rotation of the input element and the output element, or to disconnect the input element from the output element, when rotational speed of the input element exceeds a rotational speed limit.
Dependencies are inferred from the claim text.