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:
Jun. 17, 2014
Filed:
Nov. 19, 2009
Eiichi Takahashi, Shizuoka, JP;
Toshimasa Fukai, Shizuoka, JP;
Toshinori Tatsumi, Shizuoka, JP;
Yuichi Nishikiori, Shizuoka, JP;
Kaoru Kitakizaki, Saitama, JP;
Toru Tanimizu, Ibaraki, JP;
Eiichi Takahashi, Shizuoka, JP;
Toshimasa Fukai, Shizuoka, JP;
Toshinori Tatsumi, Shizuoka, JP;
Yuichi Nishikiori, Shizuoka, JP;
Kaoru Kitakizaki, Saitama, JP;
Toru Tanimizu, Ibaraki, JP;
Meidensha Corporation, Tokyo, JP;
Abstract
A vacuum capacitor includes a fixed electrode, a movable electrode, a movable electrode shaft, a magnetic flux receiving unit, a magnetic flux generating unit and a capacitance control unit. The fixed electrode is formed from a plurality of electrode members in a vacuum casing. The movable electrode is formed from a plurality of electrode members arranged in gaps formed between the electrode members of the fixed electrode in the vacuum casing. The movable electrode shaft supports the movable electrode. Capacitance appearing between the movable electrode and the fixed electrode is varied by rotation of the movable electrode shaft. The magnetic flux receiving unit rotates the movable electrode shaft in the vacuum casing. The magnetic flux generating unit is located outside the vacuum casing and rotates the magnetic flux receiving unit by magnetic attraction. The capacitance control unit rotates the magnetic flux generating unit.