Amusement devices: toys – Operated by relatively moving fluid or pressure differential – Sounding
Patent
1996-11-22
1999-08-24
Hafer, Robert A.
Amusement devices: toys
Operated by relatively moving fluid or pressure differential
Sounding
446397, 446484, A63H 500
Patent
active
059417510
ABSTRACT:
A sound-generating unit (30) is encased within the body (20) of an article (10) which is to be launched by a burst of compressed and/or pressurized fluid (15) from a fluid launching device (11). The sound-generating unit (30) has the three main elements of a piezoelectric electromechanical transducer (32), a sound-generator electronic circuit (40), and a speaker (42). The body (20) of the article to be launched has a bore to receive the burst of fluid (15). The piezoelectric element (32) is positioned within the bore in alignment for receiving the impact of the burst of fluid (15). The piezoelectric element (32), the speaker (42) and an electrical energizer (36) are connected to the sound-generator circuit (40). Upon being impinged by a burst of fluid (15) projected into the bore of the body (20), the piezoelectric element (32) minutely deforms and generates a voltage that is processed by the sound-generator circuit (40) into a desired sound-effect signal that drives the speaker (42). A resonance chamber (31) reinforces and enhances the generated sound.
REFERENCES:
patent: 2710490 (1955-06-01), Wildstein
patent: 3733741 (1973-05-01), Pipa
patent: 4820236 (1989-04-01), Berliner et al.
patent: 5316293 (1994-05-01), Hamilton
patent: 5439408 (1995-08-01), Wilkinson
Alphonso-Gibbs John A.
Applewhite John T.
Johnson Lonnie G.
Carlson Jeffrey D.
Drew Michael V.
Hafer Robert A.
Johnson Research and Development Co., Inc.
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