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:
Apr. 27, 2010
Filed:
Jul. 19, 2005
Takashi Nakao, Neyagawa, JP;
Yoichi Nakamura, Nagaokakyo, JP;
Akihiko Ishiura, Kyoto, JP;
Murata Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
In a curve section, a comb tooth markis provided concentrically with a center lineof a running rail. A comb tooth sensoron an overhead running vehiclereads comb teeth. Then, corrections are made using the ratio of the radius of curvature (R) of the center lineand the radius of curvature (r) of the comb tooth mark. An encoder interpolates the areas between the teeth. Then, the position of the overhead running vehiclein the curve section is determined. The present invention thus enables the exact position of the overhead running vehicleto be recognized even when the overhead running vehicleis located in a curve section. This makes it possible to provide a load port in a curve section.