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:
May. 21, 2002
Filed:
Feb. 15, 2001
Toshiaki Shinbo, Tokyo, JP;
Jinichi Matsumoto, Tokyo, JP;
Sumito Oda, Tokyo, JP;
Isamu Kubota, Tokyo, JP;
Shinichi Odake, Tokyo, JP;
Namco Ltd., Toyko, JP;
Abstract
In a game medium passage detecting apparatus, optical sensors are arranged in correspondence with detection areas which are adjacent to one another in a cross direction of a game board surface. Each of the optical sensors has a light emitting element and a photoelectric detecting element. The light emitting elements and the photoelectric detecting elements are arranged such that the optical axis of the detection light extends in the direction which crosses a flat surface containing an axis extending in the depth direction of the game board surface parallel to the game board surface, crosses an axis perpendicular to the game board surface, and passes obliquely through the game board surface.