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:
Oct. 23, 2001
Filed:
May. 13, 1999
Takashi Yamamoto, Ishikawa-ken, JP;
Tetsuo Takeshima, Toyama, JP;
Takeshi Kishimoto, Toyama-ken, JP;
Murata Manufacturing Co., LTD, Kyoto, JP;
Abstract
A piezoelectric acoustic component includes a unimorph-type vibration body, a mounting substrate, and a cover. The vibration body includes a substantially rectangular piezoelectric plate and a substantially rectangular metallic plate bonded to the back side of the piezoelectric plate. Longitudinal opposite end portions of the vibration body are fixed onto the mounting substrate via respective support members. The metallic plate of the vibration body is fixedly connected to a first electrode located on the mounting substrate via one of the support members, whereas the electrode located on the front side of the piezoelectric plate is connected to a second electrode located on the mounting substrate via a conductive wire. A gap between the mounting substrate and each of lateral opposite end portions of the vibration body is charged with silicone rubber, thereby defining an acoustic space between the vibration body and the mounting substrate. A cover having a sound release hole formed therein is bonded onto the mounting substrate so as to cover the vibration body without contacting the same.