Abstract: A personally worn or portable annunciator device for alerting, warning, training, communicating or diagnostic use for people especially those with hearing impairments. This device which can be activated locally or remotely has as one of its means of generating a tactile sensation a transducer or buzzer, as well as a visual light both of which are activated automatically upon the detection of an audio signal substantially above the local ambient noise, or by a RF signal remotely generated by an auxiliary unit.
December 10, 1979
Date of Patent:
October 27, 1981
John S. Lewis, Edmund P. DiGiannatonio
John S. Lewis, Edmond P. DiGiannantonio, Howard R. Boyle