B60VAIR-CUSHION VEHICLESThe term "air-cushion vehicles" in this subclass includes all vehicles which are wholly or partly supported on land or water by air or other gaseous cushionsIn this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. B60V1/00 B60V1/00Air-cushion land vehicles, waterborne vessels, or aircraft adapted or modified to travel on air cushion B60V3/00 B60V1/02wherein the cushion is generated and contained by at least one peripheral fluid curtain B60V1/04wherein the cushion is contained at least in part by walls B60V1/043the walls being flexible skirt details B60V1/16 B60V1/046the walls or a part of them being rigid B60V1/06wherein the cushion is formed within plenum chamber B60V1/08wherein the cushion is created during forward movement of the vehicle by ram effect B60V1/10in which the curtain-forming nozzle or the vehicle base is shaped to create a vortex curtain B60V1/11Stability or attitude control B60V1/115by ground or water engaging means, e.g. rudders or wheels B60V1/12by dividing the cushion B60V1/14PropulsionControl thereof B60V1/11 takes precedence B60V1/145using a watter propeller B60V1/15using part of the cushion-forming fluid B60V1/16Flexible skirts B60V1/18Body structure B60V1/20Spray deflectors B60V1/22provided with hydrofoils hydrofoils per se B63B1/24 B60V3/00Land vehicles, waterborne vessels, or aircraft, adapted or modified to travel on air cushions B60V3/02Land vehicles, e.g. road vehicles B60V3/025co-operating with a flat surface, e.g. transporting loads on platforms B60V3/04co-operating with rails or other guiding means, e.g. with air cushion between rail and vehicle B60V3/06Waterborne vessels B60V3/065hulls therefor B60V3/08Aircraft, e.g. air-cushion alighting-gear therefor