Acoustics – Diaphragm and enclosure
Reexamination Certificate
2005-01-04
2005-01-04
Duda, Rina (Department: 2837)
Acoustics
Diaphragm and enclosure
C181S153000, C181S199000, C381S397000, C381S165000
Reexamination Certificate
active
06837333
ABSTRACT:
A loudspeaker system has a diaphragm for producing sound, a loudspeaker driver mechanism operable for moving the diaphragm in response to an applied electrical signal from an audio signal source, a blower positioned for directing air under pressure over the loudspeaker driver mechanism so that heat generated by the loudspeaker driver mechanism can be convectively removed, and a control circuit electrically connected to the blower and adapted for connection to the audio signal source such that an increase in the applied electrical signal causes a corresponding increase in speed of the blower. The control circuit includes a power limiting device and a switching device that is connected in parallel with the power limiting device. The switching device is actuable from a normally closed state to an open state when the applied electrical signal is above a predetermined level to regulate the speed of the blower.
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Akin Gump Strauss Hauer & Feld & LLP
Colon Santana Eduardo
Community Light and Sound, Inc.
Duda Rina
LandOfFree
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