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US 9,175,758 B2Granted
Transmission of the toroidal race rolling traction type
AssigneeTorotrak (Development) Limited
InventorsBrian Joseph Dutson, Leslie Kendrick Robinson
Life of this patent
Estimating the term…
Abstract
A transmission of the toroidal race rolling traction type, including ratio varying components (“variators”) for such transmissions. A set of rollers transmitting traction between an input disc and an output disc is connected to a hydraulic mechanism by which it is positioned, the roller position determining the transmitted ratio.
Claims33
A variator comprising:
- a rotatably mounted input disc;
- an output disc rotatably mounted coaxially with the input disc;
- a plurality of rollers transmitting rotation between the input disc and the output disc;
- a plurality of roller carriages, each roller being rotatably mounted on one of the roller carriages, and each roller carriage being supported only by a single pivoting joint whereby each roller carriage is capable of three degrees of rotational movement about the single pivoting joint;
- a plurality of levers, each connected to the single pivoting joint of a corresponding roller carriage;
- and
- a plurality of actuators, each connected to a corresponding lever for applying a reaction force to the corresponding roller carriages via the single pivoting joint, each of the plurality of actuators being mounted on the same side of a plane aligned with and passing through a rotational axis of the input and output discs.
4 more elements
A variator comprising:
- a rotatably mounted input disc;
- an output disc rotatably mounted coaxially with the input disc;
- a plurality of rollers for transmitting rotation between the input disc and the output disc;
- a plurality of actuators, each acting upon a respective one of the rollers;
- a plurality of levers, each connected to a respective one of the rollers and its associated actuator, the plurality of levers being pivotally mounted about a first axis;
- and
- a lever pivotally mounted about a second axis wherein the second axis is inclined to the first axis.
4 more elements
A variator comprising:
- a rotatably mounted input disc;
- an output disc rotatably mounted coaxially with the input disc;
- a plurality of rollers transmitting rotation between the input disc and the output disc;
- a plurality of roller carriages, each roller being rotatably mounted on one of the roller carriages and each roller carriage being supported only by a single pivoting joint whereby each roller carriage is capable of three degrees of rotational movement about the single pivoting joint;
- a plurality of actuators, each acting upon the single pivoting joint of the corresponding roller carriage, for applying a reaction force to the corresponding roller carriages;
- wherein each of the actuators is located radially outwardly of a common plane extending parallel to the rotational axis of the input and output discs and tangential to the periphery of the larger of the input disc and output disc.
3 more elements
A variator comprising:
- a rotatably mounted input disc;
- an output disc rotatably mounted coaxially with the input disc;
- a plurality of rollers for transmitting rotation between the input disc and the output disc;
- a plurality of actuators, each acting upon a respective one of the rollers;
- wherein each of the actuators is located radially outwardly of a common plane extending parallel to the rotational axis of the input and output discs and tangential to the periphery of the larger of the input disc and output disc;
- a plurality of levers, each connected to a respective one of the plurality of rollers and its associated actuator;
- a plurality of levers pivotally mounted about a first axis;
- a lever pivotally mounted about a second axis, wherein the second axis is inclined to the first axis.
5 more elements
Dependencies are inferred from the claim text.