Device for operating and testing gas masks and breathing equipment
AssigneeDragerwerk Aktiengesellschaft
InventorsRainer Kroger, Ralf Dramenski
Life of this patent
Estimating the term…
Abstract
A testing device for gas masks and breathing equipment has a head part, to which the gas mask and breathing equipment can be connected and which is connected to a testing unit simulating the respiratory activity. The testing device provides more accurate testing especially with respect to the pressure and flow conditions. Using a valve (11, 13), which interrupts the flow connection and is provided at the testing connection in close proximity, in terms of flow, of the respiration connection.
Claims8
A device for operating and testing compressed air-operated respiratory devices connectable to the head of a human, the device comprising:
- a dummy human head part including means including a respiration connection for simulating the respiratory openings of an equipment use said dummy human having a surface providing a sealing connection between said dummy human head and a gas mask;
- a test connection tube at least partially extending into said dummy human head, in flow connection with said respiratory opening;
- a testing unit for supplying fluid, said testing unit being in fluid connection with said test connection tube, said testing unit being actively controlled and passively adjusted in terms of pressure generation and change in volume;
- and
- valve means for interrupting fluid flow from said test connection to said respiratory opening, said valve means being positioned in flow communication between said respiratory opening of said dummy human head part and said test connection tube.
A device for operating and testing compressed air-operated respiratory devices connectable to the head of a human, the device comprising:
- a dummy human head part including means including a respiration connection for simulating the respiratory openings of an equipment use;
- a test connection tube in flow connection with said respiratory opening;
- a testing unit for supplying fluid, said testing unit being in fluid connection with said test connection tube, said testing unit being actively controlled and passively adjusted in terms of pressure generation and change in volume;
- and
- valve means for interrupting fluid flow from said test connection, said valve means being positioned in flow communication between said respiratory opening of said dummy human head part and said test connection tube.
Dependencies are inferred from the claim text.