Alarm device for respirators

Details Alarm device for respirators Alarm device for respirators

1985-11-04

1987-06-02

Frankfort, Charles

Signals and indicators

Alarms

Fluid-pressure variation

116DIG7, 116DIG19, 12820222, G01L 1912, A01M 1100

Patent

active

046694153

ABSTRACT:
The dropping of pressure for the gas supply in respirators, below a minimum pressure, is reported to the wearer by an acoustic alarm device. To make it possible for the wearer to check whether a warning signal heard comes from his own equipment or not, it is provided that the alarm device has a manipulator which adjusts the sound-generating region.

REFERENCES:
patent: 357469 (1887-02-01), Davis
patent: 825610 (1906-07-01), Olt
patent: 1030639 (1912-06-01), Bodie
patent: 1811853 (1931-06-01), Landman
patent: 2626585 (1953-01-01), Mendes

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