WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

B64B　LIGHTER-THAN AIR AIRCRAFT

B64B 1/00 Lighter-than-air aircraft

B64B 1/005 ・{Arrangements for landing or taking-off e.g. alighting gear}

B64B 1/02 ・Non-rigid airships (B64B 1/58 takes precedence; balloons B64B 1/40)

B64B 1/04 ・・the profile being maintained by ties or cords connecting opposite surfaces

B64B 1/06 ・Rigid airships; Semi-rigid airships (B64B 1/58 takes precedence)

B64B 1/08 ・・Framework construction

B64B 1/10 ・・Tail unit construction (B64B 1/12 takes precedence)

B64B 1/12 ・・Movable control surfaces

B64B 1/14 ・・Outer covering

B64B 1/16 ・・・rigid

B64B 1/18 ・・・Attachment to structure

B64B 1/20 ・・provided with wings or stabilising surfaces {(tail unit construction B64B 1/10; movable control surfaces B64B 1/12)}

B64B 1/22 ・・Arrangement of cabins or gondolas

B64B 1/24 ・・Arrangement of propulsion plant (B64B 1/34 takes precedence)

B64B 1/26 ・・・housed in ducts

B64B 1/28 ・・・housed in nacelles

B64B 1/30 ・・・Arrangement of propellers

B64B 1/32 ・・・・surrounding hull

B64B 1/34 ・・・・of lifting propellers

B64B 1/36 ・・Arrangement of jet reaction apparatus for propulsion or directional control

B64B 1/38 ・・Controlling position of centre of gravity

B64B 1/40 ・Balloons (B64B 1/58 takes precedence; toy balloons A63H 27/10)

B64B 1/42 ・・Construction or attachment of stabilising surfaces

B64B 1/44 ・・adapted to maintain predetermined altitude

B64B 1/46 ・・associated with apparatus to cause bursting

B64B 1/48 ・・・to enable load to be dropped by parachute

B64B 1/50 ・・Captive balloons

B64B 1/52 ・・・attaching trailing entanglements

B64B 1/54 ・・・connecting two or more balloons in superimposed relationship

B64B 1/56 ・・・stabilised by rotary motion

B64B 1/58 ・Arrangements or construction of gas-bags; Filling arrangements

B64B 1/60 ・・Gas-bags surrounded by separate containers of inert gas

B64B 1/62 ・・Controlling gas pressure, heating, cooling, or discharging gas

B64B 1/64 ・・Gas valve operating mechanisms

B64B 1/66 ・Mooring attachments (mooring masts B64F)

B64B 1/68 ・Water flotation gear

B64B 1/70 ・Ballasting arrangements

B64B 2201/00 Hybrid airships, i.e. airships where lift is generated aerodynamically and statically