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. 08, 2003
Filed:
Jul. 17, 2000
Akihide Jinzenji, Inagi, JP;
Keiji Aruga, Machida, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A small-sized rotational vibration testing apparatus having a wide band of measuring frequencies and capable of directly driving a rotary table ( ) to oscillate or vibrate in a rotational direction under the action of torque generated by a vibration applying mechanism. The rotary table ( ) is rotatably mounted on a base ( ), and a plurality of coil frames ( ) each having a coil ( ) attached thereto are mounted on a flange ( ) of the rotary table ( ) at an equal circumferential pitch or interval about its axis of rotation. A plurality of magnetic circuits ( ) are fixedly secured to the base ( ) in such a manner that the center of each coil ( ) is positioned at the center of an associated magnetic circuit ( ).