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:
Sep. 11, 2007
Filed:
Apr. 02, 2003
Hirokazu Yamasaki, Katano, JP;
Koji Kameda, Moriguchi, JP;
Hirokazu Yamasaki, Katano, JP;
Koji Kameda, Moriguchi, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A vibration linear actuating device includes a vibrating linear actuator and a driver () for driving actuator. Actuator includes mover having permanent magnet magnetized in a radial direction, stator having coil () and facing the permanent magnet, and elastic body for coupling stator to mover. The driver includes driving section having switching element (Q) for powering coil (), output controller () for controlling switching element (Q), zero-cross detector () for detecting a zero-cross point of back electromotive force generated in coil () and having an output to be fed back to the output controller (). In this structure, the driver powers coil () in one way to keep mover vibrating in corporation with elastic body.