Piezo-film speaker and speaker built-in helmet using the same

Details Piezo-film speaker and speaker built-in helmet using the same Piezo-film speaker and speaker built-in helmet using the same

2005-03-01

2005-03-01

Ni, Suhan (Department: 2643)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C381S333000, C381S336000, C381S190000

Reexamination Certificate

active

06862358

ABSTRACT:
A flat piezo-film speaker is mounted in a motorcycle helmet. The flat-piezo film speaker is formed from a flat piezo-film curved in one direction to form at least one curved portion. A radius R of curvature at the curved portion is larger than at least 200 mm, preferably, in a range of 210 mm≦R≦360 mm. The piezo-film speaker built into a helmet for a motorcycle rider is capable of reproducing sound at a sound pressure sufficiently audible even when running the motorcycle and at a high tone quality.

REFERENCES:
patent: 4440983 (1984-04-01), Facoetti et al.
patent: 4578613 (1986-03-01), Posthuma de Boer et al.
patent: 5283835 (1994-02-01), Athanas
patent: 5309519 (1994-05-01), Park et al.
patent: 5684884 (1997-11-01), Nakaya et al.
patent: 5736808 (1998-04-01), Szilagyi et al.
patent: 6396197 (2002-05-01), Szilagyi et al.
patent: U6344584 (1988-03-01), None
patent: A63175106 (1988-07-01), None
patent: A7327298 (1995-12-01), None
“Piezo Film Sensors, Technical Manual”. Measurement Specialities, Inc. Apr. 2, 1999.*
Piezo Film Sensors, Technical Manual.

Affiliated with

Also associated with

Rating

Piezo-film speaker and speaker built-in helmet using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezo-film speaker and speaker built-in helmet using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezo-film speaker and speaker built-in helmet using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3399196