Patent Document ID: 4550427
Application ID: 06438376
Patent Flag: 1

Claim One:
1. An intraoral artificial larynx, comprising: (a) prosthetic means for mounting said larynx within the oral cavity; (b) a power source mounted on said prosthetic means; (c) signal generation means mounted on said prosthetic means for generating a preselected electrical signal; and (d) speaker means mounted on said prosthetic means for converting said signal into acoustic energy; (e) duty cycle control means for reducing the duty cycle of said signal prior to its input to said speaker means to produce a conditioned signal; (f) a tongue activatable switch; (g) switched timing means for enabling said speaker means in response to a timed closure of said switch, said switched timing means comprising a timer and a bistable flip-flop responsive through NAND gates to the output of said timer and one of said signals.