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US 9,849,393 B2Granted
Toy top
AssigneeTomy Company, Ltd.
InventorMakoto Muraki
Life of this patent
Estimating the term…
Abstract
A toy top includes a body and a shaft unit. The shaft unit includes a spinning shaft which includes projections that extend downward at a lower end of the spinning shaft.
Claims18
A toy top, comprising:
- a toy top body having a substantially conical shape with a first narrow end, a second, opposite, broader end, and an axis of rotation, and
- a shaft extending from the first end of the toy top body, having an axis which corresponds to the axis of rotation of the toy top, and including a spinning surface upon which the toy top spins on a playing surface on the axis of rotation,
- wherein the shaft includes a plurality of spaced projections extending in the direction of the axis of the shaft, each having a tip and sides extending from the tip,
- wherein the tips define the spinning surface,
- wherein the tip of each of the projections can wear due to friction with the playing surface, or each projection can break off from the shaft due to impact with an object, to redefine the spinning surface, and
- wherein the projections are arranged along concentric circles that are centered on the axis of the shaft.
3 more elements
A toy top, comprising:
- a toy top body having a substantially conical shape with a first narrow end, a second, opposite, broader end and an axis of rotation;
- and
- a shaft extending from the first end of the toy top body, having an axis which corresponds to the axis of rotation of the toy top, and including a spinning surface upon which the toy top spins on a playing surface on the axis of rotation,
- wherein the shaft includes a plurality of spaced projections extending in the direction of the axis of the shaft, each having a tip and sides extending from the tip,
- wherein the tips define the spinning surface,
- wherein the tip of each of the projections can wear due to friction with the playing surface, or each projection can break off from the shaft due to impact with an object, to redefine the spinning surface, and
- wherein at least one of the plurality of projections extends farther from the toy top than at least another of the plurality of projections.
4 more elements
A toy top, comprising:
- a toy top body having a substantially conical shape with a first narrow end, a second, opposite, broader end and an axis of rotation;
- and
- a shaft extending from the first end of the toy top body, having an axis which corresponds to the axis of rotation of the toy top, and including a spinning surface upon which the toy top spins on a playing surface on the axis of rotation,
- wherein the shaft includes a plurality of spaced projections extending in the direction of the axis of the shaft, each having a tip and sides extending from the tip,
- wherein the tips define the spinning surface,
- wherein the tip of each of the projections can wear due to friction with the playing surface, or each projection can break off from the shaft due to impact with an object, to redefine the spinning surface,
- wherein the toy top body is made of a first material, and the plurality of projections is made of a second, relatively softer material to allow the projections to wear or break more easily than the toy top body.
4 more elements
Dependencies are inferred from the claim text.