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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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LIGHTER-THAN AIR AIRCRAFT
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Lighter-than-air aircraft
.
{
Arrangements for landing or taking-off e.g. alighting gear
}
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Non-rigid airships (B64B 1/58 takes precedence; balloons B64B 1/40)
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the profile being maintained by ties or cords connecting opposite surfaces
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Rigid airships; Semi-rigid airships (B64B 1/58 takes precedence)
B64B 1/08
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Framework construction
B64B 1/10
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Tail unit construction (B64B 1/12 takes precedence)
B64B 1/12
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Movable control surfaces
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Outer covering
B64B 1/16
. . .
rigid
. . .
Attachment to structure
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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
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B64B 1/24
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Arrangement of propulsion plant (B64B 1/34 takes precedence)
B64B 1/26
. . .
housed in ducts
B64B 1/28
. . .
housed in nacelles
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B64B 1/30
. . .
Arrangement of propellers
. . . .
surrounding hull
B64B 1/34
. . . .
of lifting propellers
B64B 1/36
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Arrangement of jet reaction apparatus for propulsion or directional control
B64B 1/38
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Controlling position of centre of gravity
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Balloons (B64B 1/58 takes precedence; toy balloons A63H 27/10)
B64B 1/42
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Construction or attachment of stabilising surfaces
B64B 1/44
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adapted to maintain predetermined altitude
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B64B 1/46
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associated with apparatus to cause bursting
B64B 1/48
. . .
to enable load to be dropped by parachute
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B64B 1/50
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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
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Arrangements or construction of gas-bags; Filling arrangements
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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
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Mooring attachments (mooring masts B64F)
B64B 1/68
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Water flotation gear
B64B 1/70
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Ballasting arrangements
B64B 2201/00
Hybrid airships, i.e. airships where lift is generated aerodynamically and statically
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013