Full toroidal traction drive
First Claim
1. A toroidal variable speed traction drive comprising a driving disc and a driven disc, said discs having a common axis;
- a plurality of pairs of contacting rollers interposed between said discs;
the discs are urged together against the roller pairs by a clamping force;
each of the rollers having a first rolling surface by which it rolls on the other roller of the pair, and a second rolling surface by which it rolls on the toroidal surface of a corresponding disc;
each roller is mounted on a supporting axle about which it can rotate;
the rotational axes of the rollers in a pair are supported in a plane or planes that contain the two points where the rollers of the pair contact the discs;
at least one of the rollers in each pair is adapted to be moved to adopt a stable position within said plane by the reactionary force exerted on it by the other roller of the pair.
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Accused Products
Abstract
A toroidal variable speed traction drive includes a driving disc and a driven disc. The discs have a common axis. A plurality of pairs of contacting rollers are interposed between the discs. The discs are urged together against the roller pairs (A) by a clamping force. Each of the rollers has a first rolling surface, by which it rolls on the other roller of the pair, and a second rolling surface by which it rolls on the toroidal surface of a corresponding disc. Each roller is mounted on a supporting axle about which it can rotate. The rotational axes of the rollers in a pair are supported in a plane that contains the two points where the rollers of the pair contact the discs. At least one of the rollers in each pair is adapted to be moved to adopt a stable position within the plane by the reactionary force exerted on it by the other roller of the pair.
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Citations
20 Claims
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1. A toroidal variable speed traction drive comprising a driving disc and a driven disc, said discs having a common axis;
- a plurality of pairs of contacting rollers interposed between said discs;
the discs are urged together against the roller pairs by a clamping force;
each of the rollers having a first rolling surface by which it rolls on the other roller of the pair, and a second rolling surface by which it rolls on the toroidal surface of a corresponding disc;
each roller is mounted on a supporting axle about which it can rotate;
the rotational axes of the rollers in a pair are supported in a plane or planes that contain the two points where the rollers of the pair contact the discs;
at least one of the rollers in each pair is adapted to be moved to adopt a stable position within said plane by the reactionary force exerted on it by the other roller of the pair. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a plurality of pairs of contacting rollers interposed between said discs;
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11. A toroidal variable speed traction drive comprising:
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a driving disc; a driven disc; and a plurality of pairs of contacting rollers interposed between the driving disc and the driven disc, wherein the driving disc and the driven disc have a common axis, wherein the driving disc and the driven disc are urged together against the plurality of contacting roller pairs by a clamping force, wherein each of the plurality of pairs of contacting rollers comprises a first roller and a second roller, wherein each first roller comprises a first rolling surface and a second rolling surface, wherein each second roller comprises a third rolling surface and a fourth rolling surface, wherein the first rolling surface rolls on the third rolling surface, wherein the second rolling surface rolls on a first toroidal surface of the driving disc at a first point, wherein the fourth rolling surface rolls on a second toroidal surface of the driven disc at a second point, wherein each roller of the plurality of pairs of contacting rollers is mounted on a supporting axle about which the roller is adapted to rotate; wherein each first roller has a first rotational axis about which it rotates, wherein each second roller has a second rotational axis about which it rotates, wherein the first rotational axis and the second rotational axis are supported in at least one plane, wherein the at least one plane comprises the first point and the second point, wherein each of the plurality of pairs of contacting rollers comprises at least one stabilized roller, wherein the at least one stabilized roller is selected from the group consisting of the first roller and the second roller, and wherein the at least one stabilized roller is adapted to be moved to adopt a stable position within the at least one plane by a reactionary force exerted one selected from the group consisting of the first roller and the second roller. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification