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:
Jan. 09, 2007
Filed:
Jun. 03, 2004
Shun Kayama, Saitama, JP;
Yukiko Shimizu, Saitama, JP;
Masahiro Suzuki, Kanagawa, JP;
Toshinori Yamasue, Shiga, JP;
Hiroshi Azuma, Osaka, JP;
Hirokazu Kitamura, Kyoto, JP;
Shun Kayama, Saitama, JP;
Yukiko Shimizu, Saitama, JP;
Masahiro Suzuki, Kanagawa, JP;
Toshinori Yamasue, Shiga, JP;
Hiroshi Azuma, Osaka, JP;
Hirokazu Kitamura, Kyoto, JP;
Sony Corporation, Tokyo, JP;
Omron Corporation, Kyoto, JP;
Abstract
There is provided a vibration generator () in which a rotor with an unbalancer is rotated. The vibration generator includes a bottom plate () having a flat coil substrate () installed thereto, a stationary shaft () provided perpendicularly to the bottom plate, a magnet () installed on the stationary shaft () with a freely rotatable bearing being disposed between them and opposite to the surface of the flat coil substrate () with a slight clearance defined between them, and a weight () installed to the magnet (). For generating a vibration, a current is supplied to the coil on the flat coil substrate () to rotate the magnet () and weight (). The bottom plate () is formed from a nonmagnetic material. A thin magnetic plate () is installed at the side opposite to the magnet () with the bottom plate () being placed between the thin magnetic plate () and magnet ().