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1. (WO2017153735) CHAMBER

Pub. No.:    WO/2017/153735    International Application No.:    PCT/GB2017/050602
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Mar 08 00:59:59 CET 2017
IPC: B61B 13/10
Inventors: CHRISTIE, Nicholas Joseph
An airlock chamber (2) for locating between substantially‐evacuated passageways (14, 16), its interior being adapted to house one or more vehicles (22), the airlock chamber comprising a first end (4), a second end (6), two sides and at least one sealable doorway to provide access to the interior of the chamber. The or each doorway is sealable with one or more arcuate doors (18) located between the first and second ends and providing access to the interior of the chamber via one or both sides of the chamber. The or each door is openable by rotation about the longitudinal axis of the airlock chamber. Each end is provided with a sealable opening (8, 10) for permitting passage of a vehicle between the airlock chamber and an adjacent passageway.