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:
Dec. 14, 2010
Filed:
Apr. 24, 2007
Yoshimi Kikuchi, Nagano, JP;
Kanji Kitazawa, Nagano, JP;
Hisashi Mimura, Nagano, JP;
Masahito Okada, Nagano, JP;
Yonezo Kubota, Nagano, JP;
Yoshimi Kikuchi, Nagano, JP;
Kanji Kitazawa, Nagano, JP;
Hisashi Mimura, Nagano, JP;
Masahito Okada, Nagano, JP;
Yonezo Kubota, Nagano, JP;
Tamagawa Seiki Kabushiki Kaisha, Nagano, JP;
Abstract
An angle detector including an annular stator board (); a plurality of stators () provided on the annular stator board () independently of one another and forming slots () at constant or various intervals; a magnetic core () formed on surfaces of the stators (); stator windings () formed around the magnetic cores () and composed of excitation windings () and output windings (); a magnetic flux return path plateau () provided on each of the surfaces of the stators () and provided inward or outward of the stator windings (); an annular rotor board () provided on the magnetic flux return path plateaus (); and a gap forming board () provided on an inner surface () of the annular rotor board () and having a board inner surface () whose protrusion state changes according to a waveform. The annular rotor board rotates to cause changes in a gap () between each of the magnetic cores () and the board inner surface () of the gap forming board ().