Communications: electrical – Tactual indication – With input means
Patent
1978-06-16
1980-12-02
Pitts, Harold I.
Communications: electrical
Tactual indication
With input means
340148, 179107FD, H04R 2500, H04Q 900
Patent
active
042374499
ABSTRACT:
There is disclosed a signalling device for making hard of hearing persons aware of an impending happening in his or her proximity. The device comprises a sound transducer such as a microphone for converting sounds to electrical signals, an amplifier for amplifying the electrical signals and a selective filter connected to the amplifier for selecting amplified signals above a selected amplitude level and within a selected frequency range as may be produced by automobile horns, fire, police and emergency sirens, burglar and smoke alarms, door bells, barking dogs, and the like to produce a continuous, periodically pulsating control signal. These control signals are supplied to an indicator means such as a flashing light-emitting diode connected to a person's spectacles or a tactile alarm secured to the wrist of the person to provide a vibrating or pulsating signal to a sensitive area of the body such as the mastoid bone or the wrist or, alternatively, the device may be connected to a male-female electrical connector with a built-in electronic switch activated by the unit so that a lamp or light bulb plugged therein is turned on and off periodically to awaken the hard of hearing when a smoke alarm or whatever signal is detected.
REFERENCES:
patent: B354145 (1975-01-01), Nakamura
patent: 3536861 (1970-10-01), Dunlavy
patent: 3582671 (1971-06-01), Ott
patent: 3786628 (1974-01-01), Fossard
patent: 3798600 (1974-03-01), Saikaishi
patent: 3818149 (1974-06-01), Stearns
patent: 3989904 (1976-11-01), Rohrer
patent: 3993407 (1976-11-01), Moricca
patent: 3998209 (1976-12-01), MacVaugh
patent: 4025732 (1977-05-01), Traunmiller
patent: 4118604 (1978-10-01), Yanick
Pitts Harold I.
Zegeer Jim
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