Marble
AssigneePlaco Corporation Limited
InventorKimberly Bosarge Plagge
Life of this patent
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Abstract
A design for an improved marble is disclosed. The marble is pierced by tunnels that communicate at the center of the marble to reduce the chance that a child might suffocate after swallowing it. The innovations of additive manufacturing enable this design to be advantageously produced without requiring excessive handwork while still being robust against rough play.
Claims13
A marble comprising a sphere pierced with at least 2 tunnels wherein each tunnel pierces the center of the sphere.
A marble comprising a sphere pierced by 4 tunnels, wherein the first 2 tunnels are positioned to meet at the center of the sphere with a 90° angle between the said tunnels;
- the second pair of tunnels are positioned to meet at the center of the sphere with a 90° angle between the second pair of tunnels;
- and the two pairs of tunnels are further positioned to be at 90° with respect to each other.
A marble comprising a sphere with an open central chamber having a diameter of at least 30% of the diameter of the sphere, and further comprising at least 4 tunnels from the surface of the sphere to the central chamber such that air can pass from any tunnel entrance to any other tunnel entrance through the central chamber.
Dependencies are inferred from the claim text.