Electroacoustic novelties

Patent 5115472 Issued on May 19, 1992. Estimated Expiration Date:

May 19, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3422224

3629522

3792204

3816774

Piezoelectric-type electroacoustic transducer
Patent #: 3947644
Issued on: 03/30/1976
Inventor: Uchikawa

Piezoelectric electro-acoustic transducer with non-uniform backing
Patent #: 4024355
Issued on: 05/17/1977
Inventor: Takahashi

Sonic transducer employing rigid radiating member
Patent #: 4048454
Issued on: 09/13/1977
Inventor: Barcus , et al.

Curved polymeric piezoelectric electro-acoustic transducer
Patent #: 4088915
Issued on: 05/09/1978
Inventor: Kodama

Personal electronic listening system with an air and bone transducer mounted on the clothing collar
Patent #: 4322585
Issued on: 03/30/1982
Inventor: Liautaud

Method of making piezoelectric polymeric acoustic transducer
Patent #: 4322877
Issued on: 04/06/1982
Inventor: Taylor

More ...

Inventors

Application

No. 255008 filed on 10/07/1988

US Classes:

381/152, Driven diverse static structure (e.g., wall, sounding board)40/455, With sound310/324, Diaphragm310/800, PIEZOELECTRIC POLYMERS (E.G., MYLAR, PVDF)381/150, ELECTRO-ACOUSTIC AUDIO TRANSDUCER381/376, Headgear446/397, SOUNDING446/404With means facilitating combination with diverse art device

Examiners

Primary: Dwyer, James L.
Assistant: Cumming, William

Foreign Patent References

1926517 DE 02/12/1970
2613863 FR 10/12/1988
2210232 GB 06/12/1989

International Classes

H04R 025/00
G09F 027/00
H01L 041/04

Abstract

Electroacoustic novelties are disclosed having a piezoelectric polymer film which functions as a speaker or microphone. The novelties include flags, banners, posters or articles of headwear. The piezoelectric polymer film may be attached to a portion of the flexible substrate forming the novelty, or it may be used as an integral part of the novelty structure. An audio output or recording device is electrically coupled to the piezoelectric polymer film. Both the piezoelectric polymer film and the electrodes may be transparent so that the adjoining portion of the novelty is visible.

Other References

B. Locanthi et al., "Development of a Loudspeaker System with Omini-Directional Horn Loaded High Polymer Tweeter," Pioneer Electronics Corporation, presented at the 58th Convention of the Audio Engineering Society, 1977, pp. 1-19
M. Tamura et al., "Electroacoustic Transducers with Piezoelectric High Polymer Films," Journal of the Audio Engineering Society, vol. 23, No. 1, Jan./Feb. 1975, pp. 21-26
S. Edelman et al., "Comments on Electroacoustic Transducers with Piezoelectric High Polymer Films," Journal of the Audio Engineering Society, vol. 24, No. 7, Sep. 1976, pp. 557-558
F. Micheron et al., "Dome-Shaped Piezopolymer Electroacoustic Transducers," Ferroelectrics, vol. 51, 1983, pp. 143-150
J. Klapholz, "High Polymer Piezo Film in Electroacoustical Transducer Applications," presented at the 79th Audio Engineering Society, Oct. 12-16, 1985, pp. 1-11
J. Klapholz, "Polymer Film For Transducers," dB Magazine, Nov.-Dec. 1985, pp. 27-32
WO8403576 "Display Panels and Video Signs", Salomon Borensztejn, Sep. 198