Telephone tactile alert system

Details Telephone tactile alert system Telephone tactile alert system

1981-12-07

1983-12-20

Pellinen, A. D.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34082546, H04M 1100

Patent

active

044219539

ABSTRACT:
A telephone user who cannot hear the telephone ringing is alerted, other than audibly, to the fact that the telephone must be answered. A radio transmitter at the telephone is driven by ringing voltage supplied to the instrument. The transmitter emits a radio signal which is picked up by a receiver carried by the telephone user. Upon detection of the received signal, a tactile transducer is actuated and alerts the telephone user to the fact that the telephone must be answered.

REFERENCES:
patent: 3623064 (1971-11-01), Kagan
patent: 3811012 (1974-05-01), Barber
patent: 4066848 (1978-01-01), Darwood
patent: 4225965 (1980-09-01), Baugh
patent: 4297677 (1981-10-01), Lewis et al.
patent: 4307266 (1981-12-01), Messina

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