Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Thermal response to – or generation of – sound vibration
Patent
1995-05-25
1998-06-23
Loomis, Paul
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Thermal response to, or generation of, sound vibration
381168, 455 90, 455 91, 455 99, H04R 2500
Patent
active
057713030
ABSTRACT:
The system is a microphone mounting and control system for the hands-free operation of a microphone of a two-way radio by a driver of a vehicle. The system comprises a universal microphone holder, a flexible support member mounted to the interior roof of the vehicle for supporting the microphone holder, an electrically operated actuator for applying pressure to the trigger of the microphone and an electrical foot-operated switch for operating the actuator. The electrically operated actuator comprises a dual coil piston solenoid and an encased cable. The foot-operated switch activates the solenoid, thereby applying the activator against the trigger of the microphone. Hence, a driver is able to transmit a message through the microphone without the use of his hands for operating a trigger in the conventional prior art manner, which is highly undesirable in the event of an emergency situation.
REFERENCES:
patent: 3020368 (1962-02-01), Nielsen
patent: 4060697 (1977-11-01), Neal
patent: 4151468 (1979-04-01), Kerr
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patent: 4818010 (1989-04-01), Dillon
patent: 5453567 (1995-09-01), Brinson
patent: 5525963 (1996-06-01), Purssey
patent: 5548810 (1996-08-01), Riddell et al.
Mazzarella Charles W.
Rast, III Frederick J.
Barnie Rexford
Loomis Paul
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