Dual controlled personal alert safety system

Details Dual controlled personal alert safety system Dual controlled personal alert safety system

1996-09-16

1999-09-07

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

12820222, 12820423, 12820522, 12820523, G08B 2300

Patent

active

059493372

ABSTRACT:
The present invention pertains to a small, lightweight personal alert safety system which has a self-contained battery powered electrical and electronic circuit which is automatically activated when the breathing air SCBA is charged (pressurized) among other components, in a small casing for use by personnel working in dangerous environments, e.g., firefighters and rescue workers and the like. In the preferred embodiment, a pneumatic system is controlled by the air supply. The system cannot be turned off when the air supply is on. This safety feature insures that the firefighter is protected.

REFERENCES:
patent: 3906934 (1975-09-01), Haverland
patent: 4860764 (1989-08-01), Hudimac, Jr.
patent: 5097826 (1992-03-01), Gray et al.
patent: 5365923 (1994-11-01), Lundberg
patent: 5492110 (1996-02-01), Lenz et al.
patent: 5506571 (1996-04-01), Dugan
patent: 5541579 (1996-07-01), Kiernan
patent: 5640148 (1997-06-01), Lewis et al.

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