Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Thermal response to – or generation of – sound vibration
Patent
1995-03-27
1996-11-12
Kuntz, Curtis
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Thermal response to, or generation of, sound vibration
381152, 379202, H04R 2500
Patent
active
055747930
ABSTRACT:
The present invention is for a conference system that provides microphones that are ceiling mounted and retract into the ceiling when not in use. The system has microphones that mount on wands with the wand and microphone forming a unit which is stored above the ceiling when not in use. In a preferred embodiment, the wand is connected to an automobile power antenna which is energized to raise and lower the antenna. The system is preferably activated by a proximity sensor, located in the cradle of a phone that senses the presence of a phone hand piece and activates the system when the phone hand piece is removed from the cradle.
REFERENCES:
patent: 2288822 (1942-07-01), McCarron
Kuntz Curtis
Le Huyen D.
Weins Michael J.
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