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US 7,316,399 B2Granted
Flexible magnetic dart board with the capability of automatic scoring
OwnerJiajiu Shaw, Chia-Mu Shaoinventors
Life of this patent
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Abstract
A magnetic dart board that includes embedded conductor coils beneath scoring areas. When a dart with a magnetic head strikes a scoring area of the dart board a current is induced in the underlying conductor coil. The induced current provides an electrical signal that is transmitted to an automatic scoring system that calculates and displays scores. The dart board is made from a plurality of layers including a top layer, an insulating layer, a sensing layer and a body layer. The multi-layered dart board is flexible and can be rolled up for storage, shipping and transportation.
Claims18
A self scoring dart game dart game that comprises:
- a plurality of darts having magnet heads;
- a dart board comprising:
- a plurality of conductor coils embedded therein which conductor coils are arranged in a pattern that corresponds to predetermined scoring areas, the conductor coils including electrical leads and being configured so that when one of the plurality of darts strikes the dart board over one of the plurality of conductor coils the magnetic head of the dart induces an electrical current in the coil that is transmitted through the conductor coils leads;
- and
- non-magnetic areas of iron or iron composite that are aligned to be within each of the conductor coils and patterned to conform to the predetermined scoring areas;
- and
- an electronic scoring system which receives transmitted electrical currents induced in the plurality of conductor coils and calculates and displays a score from the transnuitted currents induced in the plurality of conductor coils,
- wherein the dart board is flexible and can be rolled up.
5 more elements
Dependencies are inferred from the claim text.