05297544 is referenced by 48 patents and cites 14 patents.

A respirator with an eye space (16), through which the air to be inhaled flows, and with an indicator located on a support for indicating the efficiency of the protective device on the respiration connection, which is to retain the pollutant from the environment. The pollutant indication takes place both in the case of leakages at the sealing zones of the mask or the respiration gas-carrying lines (compressed air respirator) and in the case of insufficient filter effect. To achieve this, the support (10) is arranged on an inner half mask (3) of the respirator, and an access surface, which is exposed to the pollutant and contains the indicator (18, 118), is in flow contact with the air being inhaled, which flows through the passage openings (12, 112) between the eye space (16) of the full mask (1) and the inner half mask space (4).

Title
Respirator with inner half mask and pollutant indicator
Application Number
7/947769
Publication Number
5297544
Application Date
September 18, 1992
Publication Date
March 29, 1994
Inventor
Gerhold Muhmel
Hamberge
DE
Carl Ernst van der Smissen
Luubeck
DE
Wolfgang Bather
Luubeck
DE
Wolfgang May
Reinfeld
DE
Agent
McGlew and Tuttle
Assignee
Dragerwerk
DE
IPC
A62B 27/00
A62B 9/00
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