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US 7,988,159 B2Granted
Lean-to-turn wheeled device
OwnerShane Cheninventor
Life of this patent
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Abstract
A wheeled device having pairs of wheels positioned on opposite sides (e.g. skateboard or “quad” skate) that includes a base and at least one turnable wheel assembly. A turnable wheel assembly includes two wheels having negative camber angle, and is configured such that the axles of the wheels can pivot about an axis disposed substantially perpendicular to the direction of travel. This configuration is conducive to the use of large wheels.
Claims9
A turnable wheeled device, comprising:
- a base, laterally tiltable;
- at least one turnable wheel assembly comprising:
- two wheels;
- two shaft members, each having a base axle and a wheel axle, the base axle being rotatably attached to the base, and each wheel being rotatably attached to the wheel axle of a respective shaft member;
- wherein the wheel axles of the two shaft members are not parallel to the base axles, resulting in the two wheels having negative camber angle when in non-turning position;
- wherein the wheel axles and the base axles are furthermore not coplanar, by means of an offset between each wheel axle and its respective base axle;
- wherein both wheel axles are offset in substantially the same direction;
- and wherein the wheel axle and the base axle are connected by a middle section.
5 more elements
Dependencies are inferred from the claim text.