The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2008
Filed:
Aug. 31, 2004
Applicants:
Jiajiu Shaw, Ann Arbor, MI (US);
Chia-mu Shao, Taiwan, CN;
Inventors:
Jiajiu Shaw, Ann Arbor, MI (US);
Chia-Mu Shao, Taiwan, CN;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F41J 3/00 (2006.01);
U.S. Cl.
CPC ...
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.