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:
Feb. 03, 2015
Filed:
May. 18, 2011
Tsutomu Nagumo, Saitama, JP;
Koji Matsuda, Saitama, JP;
Koji Nageno, Tokyo, JP;
Takeshi Hara, Kanagawa, JP;
Takahiro Suzuki, Saitama, JP;
Takayuki Ishii, Chiba, JP;
Kenji Hiraiwa, Saitama, JP;
Tsutomu Nagumo, Saitama, JP;
Koji Matsuda, Saitama, JP;
Koji Nageno, Tokyo, JP;
Takeshi Hara, Kanagawa, JP;
Takahiro Suzuki, Saitama, JP;
Takayuki Ishii, Chiba, JP;
Kenji Hiraiwa, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
An acoustic conversion device includes: a driving unit including a pair of magnets disposed so as to face each other, a yoke to which the pair of magnets are attached, a coil to which driving current is supplied, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion being passed through the coil; and a diaphragm unit including a diaphragm, and a beam portion for propagating the vibration of the vibrating portion to the diaphragm; with a coil attachment portion to which the coil is attached, located in a state in parallel with the vibrating portion, being provided to the armature.