Emergency wireless telephone

Details Emergency wireless telephone Emergency wireless telephone

1993-04-07

1995-10-24

Bost, Dwayne D.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 37, 455127, H04Q 732

Patent

active

054616646

ABSTRACT:
A portable telephone, which is used for emergency purposes. It is powered by a battery, which has a short life counterbalanced by higher power, thus improving efficiency and effectiveness of the emergency portable telephone. The battery may be sealed in a container for prolonging the life of the battery during the period of time that the telephone is inactive. In an emergency situation, the container may be pierced, and the battery freed to perform its duty.

REFERENCES:
patent: 4237344 (1980-12-01), Moore
patent: 4686697 (1987-08-01), Shapiro et al.
patent: 4724538 (1988-02-01), Farrell
patent: 4845772 (1989-07-01), Metroka et al.
patent: 5148470 (1952-09-01), Kobayashi et al.
patent: 5148473 (1992-09-01), Freeland et al.
patent: 5159317 (1992-10-01), Brav
patent: 5161180 (1992-11-01), Chavous
patent: 5203009 (1993-04-01), Bogusz et al.

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