<titlePart> <text>SECTION B <emdash/> PERFORMING OPERATIONS</text> </titlePart> <titlePart> <text>TRANSPORTING</text> </titlePart> LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION Method General operations by centrifugal force, using centrifuges or free-vortex apparatus using magnetic or electrostatic effect Apparatus General operations by centrifugal force, using centrifuges or free-vortex apparatus , using magnetic or electrostatic effect SOLID/LIQUID OR SOLID/GAS SEPARATION Method General operations by centrifugal force using centrifuges or free-vortex apparatus using magnetic or electrostatic effect Apparatus General operations by centrifugal force using centrifuges or free-vortex apparatus , using magnetic or electrostatic effect SOLID/SOLID SEPARATION Method Dry methods material in bulk Individual sorting Screening, sifting, pneumatic sorting using pneumatic tables or jigs by magnetic or electrostatic effect by centrifugal force using centrifuges or free-vortex apparatus Wet methods General operations flotation, differential sedimentation screening Combinations Dry methods - wet methods Apparatus Dry methods material in bulk Individual sorting Screening, sifting, pneumatic sorting using pneumatic tables or jigs by magnetic or electrostatic effect by centrifugal force using centrifuges or free-vortex apparatus , Wet methods General operations flotation, differential sedimentation screening Combinations Dry methods - wet methods <titlePart> <text>TRANSPORTING</text> </titlePart> <titlePart> <text>AIRCRAFT</text> </titlePart> <titlePart> <text>AVIATION</text> </titlePart> <titlePart> <text>COSMONAUTICS</text> </titlePart> <titlePart> <text>GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS</text> </titlePart> In this subclass, the following terms or expressions are used with the meanings indicated: "installations" embraces equipment, including mobile equipment, peculiar to use in connection with aircraft and not fitted thereto; "ground installations" embraces waterborne installations. <titlePart> <text>Ground or aircraft-carrier-deck installations</text> <entryReference>specially adapted for captive aircraft <sref ref="B64F0003000000"/></entryReference> <entryReference>aircraft-carriers <sref ref="B63"/></entryReference> <entryReference>fog-dispersal installations <sref ref="E01H"/></entryReference> <entryReference>wind tunnels <sref ref="G01M"/></entryReference> <entryReference>grounded flight trainers <sref ref="G09B"/></entryReference> </titlePart> <titlePart> <text>Arresting gear</text> </titlePart> <titlePart> <text>Liquid barriers</text> </titlePart> <titlePart> <text>Launching or towing gear</text> <entryReference>railway aspects <sref ref="B61"/></entryReference> <entryReference>aircraft towing aircraft <sref ref="B64D0003000000"/></entryReference> <entryReference>ammunition launching gear <sref ref="F41F"/></entryReference> </titlePart> <titlePart> <text>using catapults</text> </titlePart> <titlePart> <text>using winches</text> </titlePart> <titlePart> <text>using self-propelled vehicles</text> </titlePart> <titlePart> <text>Anchoring</text> </titlePart> <titlePart> <text>Towers or masts for mooring airships or balloons</text> <entryReference>mooring attachments of lighter-than-air aircraft <sref ref="B64B0001660000"/></entryReference> <entryReference>building aspects <sref ref="E04H0006000000"/>, <sref ref="E04H0012000000"/></entryReference> </titlePart> <titlePart> <text>Pickets or ground anchors</text> </titlePart> <titlePart> <text>Wheel chocks</text> </titlePart> <titlePart> <text>Visual or acoustic landing aids</text> <entryReference>optical or acoustic signalling in general <sref ref="G08"/></entryReference> </titlePart> <titlePart> <text>Arrangement of optical beacons</text> </titlePart> <titlePart> <text>installed for handling aircraft</text> </titlePart> <titlePart> <text>Adaptations of turntables</text> </titlePart> <titlePart> <text>for reducing engine or jet noise</text> </titlePart> <titlePart> <text>Protecting airports from jet erosion</text> </titlePart> <titlePart> <text>Liquid-handling installations specially adapted for fuelling stationary aircraft</text> <entryReference>liquid handling in general <sref ref="B67"/></entryReference> </titlePart> <titlePart> <text>for embarking or disembarking passengers</text> </titlePart> <titlePart> <text>Bridges extending between terminal building and aircraft, e.g. telescopic, vertically adjustable</text> </titlePart> <titlePart> <text>Passenger vehicles specially adapted to co-operate, e.g. dock, with aircraft or terminal buildings</text> </titlePart> <titlePart> <text>Mobile stairs</text> <entryReference>movable stairways in general <sref ref="E04F0011040000"/></entryReference> </titlePart> <titlePart> <text>for handling freight</text> </titlePart> <titlePart> <text>for starting propulsion plant</text> </titlePart> <titlePart> <text>Other airport installations</text> <entryReference>construction of, or surfacing for, airfields <sref ref="E01C"/></entryReference> </titlePart> <titlePart> <text>Ground installations specially adapted for captive aircraft</text> <entryReference>railway aspects <sref ref="B61"/></entryReference> </titlePart> <titlePart> <text>with means for supplying electricity to aircraft during flight</text> </titlePart> <titlePart> <text>Designing, manufacturing, assembling, cleaning, maintaining, or repairing aircraft, not otherwise provided for</text> </titlePart>