Amusement devices: toys – Operated by relatively moving fluid or pressure differential – Including variable-size fluid chamber to move fluid
Reexamination Certificate
2000-08-09
2001-05-08
Ricci, John A. (Department: 3712)
Amusement devices: toys
Operated by relatively moving fluid or pressure differential
Including variable-size fluid chamber to move fluid
C446S213000, C446S397000
Reexamination Certificate
active
06227927
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to sound producing devices and more particularly to sound producing devices having an air driven sound generating system.
BACKGROUND OF THE INVENTION
Over the years, there has been a multitude of air driven sound inventions, resulting in a great variety of unusual sounds. Some of these inventions have been specifically designed to entertain and amuse the users of these devices.
For example, U.S. Pat. No. 5,522,756 issued to Barthold discloses an AIR DRIVEN SOUND GENERATING TOY USING MALLEABLE MATERIAL. The sound generating toy has a bellows used for producing a flow of pressurized air through a curved tube containing a malleable material. The air is forced past the malleable material causing an entertaining sound.
Despite the advances provided by the above-noted devices, a continuing need exists for better sound producing devices.
SUMMARY OF THE INVENTION
It is the object of the present invention to create a simple, portable sound producing device for the amusement of the user and others.
A first illustrative embodiment of the present invention is a sound producing device comprising an outer tube having an open end and a closed end, a plunger which fits inside the open end of the outer tube, and an amount of flexile material arranged between an outer surface of the plunger and an inner surface of the outer tube when the plunger is inserted into the outer tube. Movement of the plunger within the outer tube creates a pressure or vacuum, forcing air past the flexile material and thereby creating an amusing sound. The movement may also create an entertaining visual effect if the outer tube is made of a transparent material.
Another embodiment of the invention incorporating a guided plunger offers a more reliable way of producing the amusing sound by use of a centering guide pin.
A further embodiment of the invention incorporating multiple tubes can produce distinctly different amusing sounds.
Yet another embodiment of the invention incorporating a sound enhancer tube produces an amusing sound with richer tone.
REFERENCES:
patent: 1537218 (1925-05-01), Bartolowsky
patent: 1805566 (1931-05-01), Cipra
patent: 2904931 (1959-09-01), Hanf
patent: 4179845 (1979-12-01), Jacob
patent: 4279100 (1981-07-01), Rivette et al.
patent: 6048250 (2000-04-01), Hudson
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