Production of a sound-producing PU-ball
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United States of America Patent
Stats
-
Apr 20, 1993
Grant Date -
N/A
app pub date -
Jan 28, 1992
filing date -
Jan 28, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The production of a sound-producing polyurethane foamed ball is disclosed in which the sound producing hardware having a sound generating circuit connected to a battery set by a spring switch, is placed in a mold for producing a polyurethane foam ball in which the polyurethane covers the sound generator through a foaming process. The sound generating hardware is supported in the mold by a metal column extending into the mold cavity. The polyurethane ball thus made has an elongated sound hole for transmitting sounds from said sound generator to the outside.
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Family
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Cited Art Landscape
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