Protective device for work in polluted environment

Details Protective device for work in polluted environment Protective device for work in polluted environment

1984-03-05

1986-04-15

Joyce, Harold

98 201, 98 211, B60H 306

Patent

active

045819882

ABSTRACT:
A device for protecting the operator of mobile plant working in a polluted environment comprises an air treatment unit adapted to be fitted to or incorporated into a roof of a cab accommodating the operator. The air treatment unit contains at least one coarse filter element, a fine filter element and a chemical filter element. It further contains a motor-driven fan on the outlet side of the filter elements, a pressure monitoring device and a toxicity monitoring system. The toxicity monitoring system comprises at least one semiconductor sensor, a voltage selector and a display panel connected to the sensor(s) and to the voltage selector.

REFERENCES:
patent: 3657992 (1972-04-01), Minnick, Jr.
patent: 4007875 (1977-02-01), Stolz et al.
patent: 4467706 (1984-08-01), Batcheller et al.
patent: 4478049 (1984-10-01), Fukui et al.

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