The disclosure describes an airlock with a pneumatic orifice, characterized in that the orifice chamber is located inside the tunnel, together with an inactive expansion element made up of a flexible material consisting of an external torus and an internal membrane, which is activated by compressed air produced by compressors placed in a housing.
AIRLOCK WITH A PNEUMATIC ORIFICE FOR THE VACUUM TRAIN SYSTEM
2021-02-11
Patent
Electronic Resource
English
IPC: | E21F Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels , SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS / B61B RAILWAY SYSTEMS , Eisenbahnanlagen / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS |
NTIS | 1972
|NTRS | 1974
|Positive-pressure airlock system between ship and platform airlock
European Patent Office | 2020
|NTRS | 1984
|NTIS | 1974
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