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US 6,543,779 B2Granted
Dart board
OwnerChih-Hao Yiuinventor
Life of this patent
Estimating the term…
Abstract
A dart board includes a backing board from which a plurality of tightly overlapped sheets of artificial material extend and each of the sheets has a lot of slits defined therethrough. The slits extend in a direction which is perpendicular to the backing board. When a tip of a dart is inserted into the dart board, the slits expand and provide the sheets flexibility so that after the dart is removed, the sheets bounce back without leaving a hole in the dart board.
Claims6
A dart board comprising:
- a backing board;
- a plural of tightly overlapped sheets of artificial material each fixedly connected to said backing board at one end thereof;
- wherein:
- each of said plurality of sheets of artificial material has a surface formed with multiple slits;
- and
- each of said multiple slits is longitudinally extended through said surface of each of said plurality of sheets of artificial material.
3 more elements
A dart board comprising:
- a backing board;
- a plurality of tubes each fixedly connected to said backing board at one end thereof and each including a spirally rolled sheet of artificial material;
- wherein:
- said spirally rolled sheet of artificial material of each of said tubes has a surface formed with multiple slits;
- and
- each of said multiple slits is longitudinally extended through said surface of said spirally rolled sheet of artificial material of each of said tubes.
3 more elements
Dependencies are inferred from the claim text.