Telecommunications – Transmitter and receiver at separate stations – Having diverse art device
Patent
1991-06-18
1995-04-04
Urban, Edward F.
Telecommunications
Transmitter and receiver at separate stations
Having diverse art device
455 89, 455 90, 455351, H04B 138
Patent
active
054045770
ABSTRACT:
A generally hands-free, voice communication system in combination with a head-protective helmet. The helmet protects the wearer's head and the communications system permits voice communications between journeyman personnel, e.g. firefighters, police, military, industrial, hazardous material handling personnel, in relatively close proximity with each other and between journeymen and a group leader; and the group leader's communication system to also permit relatively long-range communication between the group leader and a relatively distant communications center such as a fire engine or distant fire company, base station or repeater.
REFERENCES:
patent: 2942072 (1960-06-01), Cunningham
patent: 3586977 (1971-06-01), Lustig
patent: 4025734 (1977-05-01), Aloupis
patent: 4116237 (1978-09-01), Birch
patent: 4367378 (1983-01-01), Jordan
patent: 4833726 (1989-05-01), Shinoda et al.
patent: 5090054 (1992-02-01), Grilliot et al.
patent: 5142700 (1992-08-01), Reed
Armstrong Robert M.
Gray Robert E.
Olsen Jeffrey N.
Richter Robert J.
Schuler Kurt P.
Cairns & Brother Inc.
Rhodes, Jr. R. Gale
Urban Edward F.
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