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. 01, 1991
Filed:
Feb. 01, 1989
Eric E Winkler, Kowloon, HK;
Saitek Limited, Kowloon, HK;
Abstract
A sensory electronic game which includes a board having a number of defined positions each provided with an isotropic field sensor such as a reed switch which has open and closed positions depending upon the presence or absence of a magnetic field, and two sets of playing pieces. All pieces have a magnet with its N-S axis substantially upright to provide a magnetic field which will open or close the sensor when a piece is positioned on the associated board position. To avoid a lack of detection if one piece is quickly replaced by another piece, the pieces of one set have the N pole facing downwardly whilst the pieces of the other set have the S pole facing downwardly. Then, by detecting the opening and closing of the sensors including momentary open and closed positions during capture or replacement of a piece of one set by a piece of another set, movement of pieces can be determined.