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US 10,427,062 B2Granted
Wheel assembly for countering an acting gravitational force
AssigneeMP Development Limited
InventorKung Jui Lee
Life of this patent
Estimating the term…
Abstract
A wheel assembly for use on a toy car includes a roller defining an axis of rotation, a wheel portion connected to the roller. The periphery of the wheel portion an at least partially sticky surface, which includes a blank portion without a tendency to stick.
Claims19
A wheel assembly for use on a toy car, the wheel assembly comprising:
- a roller defining an axis of rotation, and
- a wheel portion connected to the roller, wherein
- the wheel portion has a peripheral surface that extends entirely around the axis of rotation, and
- the peripheral surface of the wheel portion has a sticky portion that has a sticky surface, and a blank portion adjoining the sticky portion and that is devoid of the sticky surface.
1 more element
A wheel assembly for a toy car, the wheel assembly comprising:
- a roller having an axis of rotation;
- a first wheel portion having a peripheral surface that extends entirely around the axis of rotation, wherein
- the first wheel portion projects radially outward with respect to the axis of rotation,
- the peripheral surface of the first wheel portion includes
- a first circumferential portion having a peripheral outer surface extending partially around the peripheral surface of the first wheel portion and that is sticky, and
- a second circumferential portion having a peripheral outer surface extending partially around the peripheral surface of the first wheel portion and that is devoid of the sticky surface, wherein the first and second circumferential portions of the first wheel portion adjoin each other and extend entirely around the axis of rotation;
- and
- a second wheel portion having a peripheral surface that extends entirely around the axis of rotation, wherein
- the second wheel portion projects radially outward with respect to the axis of rotation,
- the peripheral surface of the second wheel portion includes
- a first circumferential portion having a peripheral outer surface extending partially around the peripheral surface of the second wheel portion and that is sticky, and
- a second circumferential portion having a peripheral outer surface extending partially around the peripheral surface of the second wheel portion and that is devoid of the sticky surface, wherein
- the first and second circumferential portions of the second wheel portion adjoin each other and extend entirely around the axis of rotation,
- the first and second wheel portions are spaced apart on the roller, and
- the first and second wheel portions rotate upon rotation of the roller.
12 more elements
Dependencies are inferred from the claim text.