Piezo-electric speaker

Details Piezo-electric speaker Piezo-electric speaker

2007-06-05

2007-06-05

Pendleton, Brian Tyrone (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

C381S150000, C381S191000, C381S117000, C381S111000

Reexamination Certificate

active

10238229

ABSTRACT:
A piezo-electric speaker ensures a uniform sound in a broad band and can easily reproduce a signal of large amplitude or sound. A piezo-electric speaker has a piezo-electric member to generate a vibration according to an electric signal applied thereto. A piezo-electric vibration plate converts the vibration to a sound. The piezo-electric vibration plate is positioned closely to the piezo-electric member. The piezo-electric vibration plate is divided into parts of any configuration and is connected to the piezo-electric member.

REFERENCES:
patent: 5852337 (1998-12-01), Takeuchi et al.
patent: 6215884 (2001-04-01), Parrella et al.
patent: 6453050 (2002-09-01), Ogura et al.
patent: 6668437 (2003-12-01), Maruyama et al.
patent: 02-141098 (1990-05-01), None
patent: 06-022395 (1994-01-01), None
patent: 09-163498 (1997-06-01), None
patent: 11-113094 (1999-04-01), None
Co-pending U.S. Appl. No. 09/940,729, filed Aug. 28, 2001 entitled “Piezo-Electric Speaker”.

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