Rotorcraft; Rotors peculiar thereto

Child Classifications

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• B64C 27/001 +4 CPC CPC only CPC only
• B64C 27/006 +1 CPC CPC only CPC only
• B64C 27/008 CPC only CPC only
• B64C 27/02 Gyroplanes +3 CPC IPC+CPC Available in IPC and CPC
• B64C 27/04 Helicopters IPC+CPC Available in IPC and CPC
• B64C 27/20 Rotorcraft characterised by having shrouded rotors, e.g. flying platforms IPC+CPC Available in IPC and CPC
• B64C 27/22 Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft IPC+CPC Available in IPC and CPC
• B64C 27/32 Rotors +3 CPC IPC+CPC Available in IPC and CPC
• B64C 27/51 Damping of blade movements since 1980 IPC+CPC Available in IPC and CPC
• B64C 27/52 Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43) IPC+CPC Available in IPC and CPC
• B64C 27/54 Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement IPC+CPC Available in IPC and CPC
• B64C 27/82 characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft +7 CPC IPC+CPC Available in IPC and CPC