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. 30, 2003
Filed:
Apr. 11, 2000
Makoto Teshima, Sendai, JP;
Koji Uchida, Sendai, JP;
Yutaka Suzuki, Sendai, JP;
Toru Kumagai, Shiroishi, JP;
NEC Tokin Corporation, Sendai, JP;
Abstract
In a vibration actuator using a magnetic circuit device ( ), a supporting arrangement ( ) elastically supports the magnetic circuit device. A coil ( ) is inserted into a magnetic gap ( ) of the magnetic circuit device and is supported by a vibration plate ( ). The vibration actuator has a first operation mode in which the magnetic circuit device mainly vibrates to transmit vibration through the vibration plate to the outside, a second vibration mode in which the coil mainly vibrates to produce a buzzer sound through the vibration plate, and a third vibration mode in which the magnetic circuit device and the coil mainly vibrate to produce a sound corresponding to a speech through the vibration plate.