IPC 7 English version
B64-B64B00170

SECTION B – PERFORMING OPERATIONS; TRANSPORTING


B 64AIRCRAFT; AVIATION; COSMONAUTICS


B 64 BLIGHTER-THAN-AIR AIRCRAFT (ground installations for aircraft in general B64F)


1/

00Lighter-than-air aircraft

1/

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

1/

04..the profile being maintained by ties or cords connecting opposite surfaces

1/

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

1/

08..Framework construction

1/

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

1/

12..Movable control surfaces

1/

14..Outer covering

1/

16...rigid

1/

18...Attachment to structure

1/

20..provided with wings or stabilising surfaces

1/

22..Arrangement of cabins or gondolas

1/

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

1/

26...housed in ducts

1/

28...housed in nacelles

1/

30...Arrangement of propellers

1/

32....surrounding hull

1/

34....of lifting propellers

1/

36..Arrangement of jet reaction apparatus for propulsion or directional control

1/

38..Controlling position of centre of gravity

1/

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

1/

42..Construction or attachment of stabilising surfaces

1/

44..adapted to maintain predetermined altitude

1/

46..associated with apparatus to cause bursting

1/

48...to enable load to be dropped by parachute

1/

50..Captive balloons

1/

52...attaching trailing entanglements

1/

54...connecting two or more balloons in superimposed relationship

1/

56...stabilised by rotary motion

1/

58.Arrangements or construction of gas-bags; Filling arrangements (connection of valves to inflatable elastic bodies B60C 29/00)

1/

60..Gas-bags surrounded by separate containers of inert gas

1/

62..Controlling gas pressure, heating, cooling, or discharging gas

1/

64..Gas-valve operating mechanisms

1/

66.Mooring attachments (mooring masts B64F 1/14)

1/

68.Water flotation gear

1/

70.Ballasting arrangements