Skip over navigation
EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWERPLANTS OR PROPULSION TRANSMISSIONS
Definition statement
This subclass/group covers:
  • Dropping, ejecting, releasing or receiving articles in flight.
  • Arrangements of military equipment.
  • Equipment for handling freight
  • Flying suits
  • Passenger or crew accommodation; arrangements of seats
  • Air-treatment
  • De-icing
  • Parachutes
  • Emergency apparatus
  • Mounting power plant in aircraft, nacelles fairings, arrangement of power plants
  • Power plant control
  • Transmitting power from power plants to propellers or rotors
  • Fuel supply
  • Fuel tanks
  • Refuelling during flight
  • Arrangements of instruments
  • Indicators
Special rules of classification within this subclass

Indexing Code-codes with identical symbols starting with L64D are used for classifying additional information.

the articles being explosive, e.g. bombs ( arming or setting bomb fuzes F42C)
Definition statement
This subclass/group covers:

Ejector systems for missiles

Devices for separating bombs from fuselage.

References relevant to classification in this group
This subclass/group does not cover:
Bombs, Missiles
Informative references
Attention is drawn to the following places, which may be of interest for search:
Rocket launchers
Arming or setting bomb fuzes
Bomb releasing; Bombs doors
Definition statement
This subclass/group covers:

Bomb bays in fuselages

Bomb doors of bomb bays.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Bombs
Stowage arrangements for the devices in aircraft
Definition statement
This subclass/group covers:

Arrangements for holding the load in the aircraft fuselage or means adapted to release the load.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Retaining devices for pallets or freight containers
Releasing
Definition statement
This subclass/group covers:

Extractor parachutes

Ejector devices.

Absorbing landing shocks
Definition statement
This subclass/group covers:

Rockets used as braking devices

Cushioning devices; shock absorbers, springs, etc. for absorbing landing chocks on load-carrying articles dropped/ejected/released from an aircraft.

One or more rocket could be positioned on the load and ignited just prior to touch-down, such that the rocket thrust brakes/cushions the arrival on the ground, as shown in this example (ignited rockets (22) circled in red):

media0.png

Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting ( jettisoning fuel B64D 37/26)
Definition statement
This subclass/group covers:

Fire fighting aircraft

Water baskets hanging below helicopters.

References relevant to classification in this group
This subclass/group does not cover:
Jettisoning fuel
Informative references
Attention is drawn to the following places, which may be of interest for search:
Fire fighting or fire prevention
Taking-up articles from earth`s surface
Definition statement
This subclass/group covers:

Devices adapted on aircraft for hanging loads

Helicopter devices for transporting hanging loads

Informative references
Attention is drawn to the following places, which may be of interest for search:
Repair of electric lines
for towing targets ( towed targets per se F41J)
Definition statement
This subclass/group covers:

Devices mounted on aircraft for towing targets.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Targets as such
Aircraft transported by aircraft, e.g. for release or reberthing during flight ( flying units formed by separate aircraft B64C 37/02)
Informative references
Attention is drawn to the following places, which may be of interest for search:
Flying units formed by separate aircraft
Space shuttles
Arrangements of military equipment, e.g. armaments, armament accessories, or military shielding, in aircraft; Adaptations of armament mountings for aircraft ( dropping bombs or the like B64D 1/00 ; armaments or mountings therefor per se F41)
Definition statement
This subclass/group covers:

Stealth structures

Armoured structures.

References relevant to classification in this group
This subclass/group does not cover:
Dropping bombs or the like
Informative references
Attention is drawn to the following places, which may be of interest for search:
Camouflage
Armoured garments
Arrangements of rocket launchers {or releasing means} ( rocket launchers per se, e.g. rocket pods, F41F 3/06)
Definition statement
This subclass/group covers:

Rail systems for rockets.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Ejector systems for missiles
Rocket launchers per se, e.g. rocket pods
Equipment for handling freight; Equipment for facilitating passenger embarkation or the like ( emergency equipment B64D 17/00, B64D 19/00, B64D 25/00; structures integral with fuselage to facilitate loading, fuselage floors specially adapted for freight, steps mounted on and retractable within aircraft B64C ; ground installations B64F)
Definition statement
This subclass/group covers:

Loadings systems and methods

Cargo handling.

References relevant to classification in this group
This subclass/group does not cover:
Emergency equipment
Structures integral with fuselage to facilitate loading, fuselage floors specially adapted for freight, steps mounted on and retractable within aircraft
Ground installations
Informative references
Attention is drawn to the following places, which may be of interest for search:
Securing or forwarding containers in vehicles
Aircraft floors adapted for freight
Aircraft ramps for loading
Containers
Roller ways
Determining centre of gravity in aircraft
Weighing aircraft
Special rules of classification within this group

There will be an indexing scheme for:

Powered cargo rollers (PDU)

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Power Drive Unit (PDU)
Powered rollers and drives to move containers and pallets within aircraft fuselages or cargo bays
{Flying suits ( helmets in general A42B 3/00 ; breathing helmets A62B 18/00) }
Definition statement
This subclass/group covers:

Garments for pilots, e.g. g-suits, trousers or bladders

Helmets

Oxygen supply, e.g. valves, pilots' masks or controllers.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Breathing helmets
Respiratory or breathing apparatus
Helmets in general
High-altitude pressure suits
Special rules of classification within this group

There will be an indexing scheme for:

Anti-G suits and garments

High altitude suits

Suits with cooling or warming means.

Passenger or crew accomodation; Flight-deck installations not otherwise provided for
Definition statement
This subclass/group covers:

Cabin layouts

Passengers' oxygen masks.

Special rules of classification within this group

There will be an indexing scheme for:

Emergency oxygen supply and distribution systems

Passengers oxygen masks, their storage or deployment

Aircraft cabin illumination systems

Modular (preassemblies) units to create cabin structure, including interior layout

Cabin reading lights, e.g. passenger individual reading lights.

{Devices specially adapted for food or beverage distribution services}
Definition statement
This subclass/group covers:

Food and beverage distribution systems

Interaction between trolley and cabin.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Trolleys adapted to be used in vehicles
Arrangements or adaptations of seats ( seat constructions for emergency purposes B64D 25/04 ; { seat accessories B60N 3/00} )
Definition statement
This subclass/group covers:

Passenger seats

Informative references
Attention is drawn to the following places, which may be of interest for search:
Seats for vehicles
Seat accessories
Seat modifications; e.g. ejection seats
Special rules of classification within this group

There will be an indexing scheme for:

  • Seat adjustment mechanisms, e.g. inclining or positioning mechanisms for seats
  • Seats with airbags, integration in seat structure
  • Seat arm rests
  • Seat arrangements, seats layouts within cabin
  • Seats convertible into beds
  • Seats adapted or with arrangements for children
  • Seats with crash energy absorbing means
  • Rest berths for crew members
  • Passenger seats with ejection means
  • Seats with electric motors
  • Seats with connectors for electric devices; e.g. for laptops
  • Seats with means for exercising during flight
  • Seat floor attachments
  • Seat foot rests
  • Seats with means for individual control of temperature
  • Lightweight seats, e.g. simplified seat structures to minimise weight
  • Cocoon type seats
  • Seats including storage for luggage or waste
  • Seats with privacy shells, screens, separators, etc.
  • Seats with restrainments for passenger, e.g. seat belts, headrests
  • Seats with storage means for safety devices
  • Bed units at the ceiling of the cabin for passengers
  • Devices holding passengers in standing position
  • Seat with means for attaching stretchers or arrangements for disabled passengers
  • Folding tables, cup holders or trays for seats
  • Upholstery for seats
  • Seats with ventilation means
Arrangements or adaptations of air-treatment apparatus for aircraft crew or passenger, or freight space; {or structural parts of the aircarft} ( treatment rooms with artificial climate for medical purposes A61G 10/02 ; respiratory apparatus in general A62B ; for for vehicles in general B60H)
Definition statement
This subclass/group covers:

Accessories for air-conditioning systems; e.g. valves, nozzles, air mixing chambers.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Attention is drawn to the following places, which may be of interest for search: Treatment rooms with artificial climate for medical purposes
Respiratory apparatus in general
For vehicles in general
Valves
Special rules of classification within this group

There will be an indexing scheme for:

Air nozzles for passenger ventilation.

{the air being used to cool structural parts of the aircraft}
Definition statement
This subclass/group covers:

Arrangements and devices to direct cooling air from air-conditioning to structural parts of the aircraft.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Fuselage structures adapted to reduce the effects of aerodynamic or other external heating
Aircraft heat insulation
Wing constructions adapted to reduce effects of aerodynamic or other external heating
Conditioning fuel
the air being pressurised
Definition statement
This subclass/group covers:

Cabin pressurising valves

Security devices.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Automatic control of pressure
Definition statement
This subclass/group covers:

Cabin pressurising systems.

the air being conditioned ( pressurising B64D 13/02)
Definition statement
This subclass/group covers:

Air conditioning systems; e.g. air cycle machines.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Air cycle machines in general
Cabin pressurizing systems
Special rules of classification within this group

There will be an indexing scheme for Environmental Control Systems (ECS):

ECS providing hot air or liquid for de-icing non-ECS components

ECS with provisions for cooling avionics or using avionics waste heat

ECS with provisions to reduce or manage the amount of bleed air

ECS used in combination with boundary layer control

ECS with means for cabin air effusion; i.e. distribution of air in the cabin

ECS with subsystems for cooling food, catering or loads

ECS using where chemical reactions, e.g. using heat from e.g. chemical components

ECS with CO2 removers or CO2content control

ECS with dual systems

ECS using electric motors or generators

ECS with energy recovery means energy for pressurized cabins

ECS using filters; e.g. against smoke

ECS with provisions for cooling or inerting fuel systems

ECS with humidity control

ECS with means for preventing icing in ECS components

ECS with ionizers

ECS including a liquid subsystem

ECS combined with OBOGS

ECS with Oxygen content control

ECS with Ozone content control

ECS where the air is recirculated into and from the cabin, i.e. with recirculation

ECS with special provisions against smoke from cigarettes

ECS combined with power plant starting systems

ECS with air flow, temperature or humidity controls for cabin zones or personal areas

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
ECS
Environmental control system
OBOGS
On-Board Oxygen Generation System
the air being heated or cooled
Definition statement
This subclass/group covers:

Systems for cooling or heating cabin air, e.g. using heat from radiator.

Heaters

Cabin ventilation systems.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Heating, cooling or ventilating devices in vehicles
Emergency apparatus or devices, not otherwise provided for ( parachutes B64D 17/00 , B64D 19/00 ; jettisoning of fuel tanks or fuel B64D 37/00 ; { specially adapted for protection against criminal attack, e.g. anti-hijacking systems B64D 45/0015} ; safety belts or body harnesses in general A62B 35/00 ; safety belts or body harnesses for land vehicles B60R 22/00 ; jettisonable parts of fuselage facilitating emergency escape B64C)
Definition statement
This subclass/group covers:

Fire extinguishing

Safety airbags.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Fire prevention, containment or extinguishing
Parachutes
Jettisoning of fuel tanks
Protection against criminal attack
Safety belts or body harnesses in general
Safety belts or body harnesses for vehicles
Jettisonable parts of fuselage facilitating emergency escape
Supports or holding means for living bodies
Definition statement
This subclass/group covers:

Restraining means for pilot's legs, head or arms in ejection seats.

Seat modifications
Definition statement
This subclass/group covers:

Crashworthy seats

Adapted or integrated swimming vests.

Arrangement or mounting of power plant in aircraft; Aircraft characterised thereby ( attitude, flight direction, or altitude control of aircraft by jet reaction B64C)
Definition statement
This subclass/group covers:

Elastomeric joints for mounting power plant

Accessories therefor.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Attitude, flight direction or altitude control of aircraft by jet reaction
Special rules of classification within this group

There will be an indexing system for the following:

Hybrid power plants, i.e. aircraft with two different types of power plant; e.g. electric and gas-turbine

Aircraft characterised by the type or position of power plant ( fuselages or wings adapted for mounting power plant B64C)
Definition statement
This subclass/group covers:

Particular disposition or arrangement of power plant in aircraft

Peculiar power plants.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Fuselages or wings adapted for mounting power plant
of piston type
Definition statement
This subclass/group covers:

Structures for mounting piston type power plants in aircraft, independently of the position of the same.

within or attached to wing
Definition statement
This subclass/group covers:

Structures for mounting piston type power plant at the wing of the aircraft.

within or attached to fuselage
Definition statement
This subclass/group covers:

Structures for mounting piston type power plant at the fuselage of the aircraft.

of gas-turbine type (B64D 27/16 takes precedence )
Definition statement
This subclass/group covers:

Structures for mounting turboprop type power plants in aircraft, independently of the position of the same.

within or attached to wing
Definition statement
This subclass/group covers:

Structures for mounting turboprop type power plants at the wing of the aircraft.

within or attached to fuselage
Definition statement
This subclass/group covers:

Structures for mounting turboprop type power plants at the fuselage of the aircraft.

of jet type
Definition statement
This subclass/group covers:

Structures for mounting turbofan type power plants in aircraft, independently of the position of the same.

within or attached to wing
Definition statement
This subclass/group covers:

Structures for mounting turbofan type power plants at the wing of the aircraft.

within or attached to fuselage
Definition statement
This subclass/group covers:

Structures for mounting turbofan type power plants at the fuselage of the aircraft.

Aircraft characterised by construction of power-plant mounting
Definition statement
This subclass/group covers:

Fail-safe attachments for mounting turbofan power plants to the supporting structure.

Special rules of classification within this group

There will be an indexing scheme for the following:

Box like attachments, e.g. to the wing pylon

Engine attachments for supporting vertical loads

Engine thrust links

Power-plant nacelles, fairings, or cowlings ( nacelles not otherwise provided for B64C)
Definition statement
This subclass/group covers:

Fairings

Seals

Liners.

References relevant to classification in this group
This subclass/group does not cover:
Aerodynamic aspects of nacelles
associated with wings ( wings adapted for mounting power plant B64C)
Definition statement
This subclass/group covers:

Aerodynamic aspects of connection elements between engine nacelle and wing.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Wings adapted for mounting power plant
associated with fuselages
Definition statement
This subclass/group covers:

Aerodynamic aspects of connection elements between engine nacelle and fuselage.

Attaching of nacelles, fairings or cowlings
Definition statement
This subclass/group covers:

Operating mechanisms for cowlings or panels

Latches

Supports for thrust reversers.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Latches
Thrust reversers for turbine engines
Panels or cowls per se
Inspection panels for power plants
Definition statement
This subclass/group covers:

Panels

Cowls.

References relevant to classification in this group
This subclass/group does not cover:
Operating mechanisms for cowlings or panels
Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
Definition statement
This subclass/group covers:

Power plant starting systems.

of combustion air intakes ( air intakes for gas-turbine plants or jet-propulsion plants per se F02C 7/04 ; air intakes for combustion engines in general F02M 35/00)
Definition statement
This subclass/group covers:

Air intakes.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Air intakes for gas-turbine power plants or jet propulsion plants per se
Combustion engines in general
Special rules of classification within this group

There will be an indexing scheme for the following:

  • Air intake with acoustic liners for noise suppression
  • Air intake specially adapted for APU
  • Air intakes with bird ingestion protection
  • Air intakes with means for boundary layer control
  • Air intakes with means for avoiding icing
  • Air intakes with means to minimise infrared emissions
  • Air intakes of the NACA type for any purpose; e.g. ECS or avionics
  • Air intakes with particle separators
  • Air intakes for jet engines
  • Air intakes for piston engines
  • Air intakes for supersonic aircraft
  • Air intakes for turbofan engines
  • Air intakes for turboprop engines
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
APU
Auxiliary Power Unit
ECS
Environmental Control System
of exhaust outlets or jet pipes (exhaust outlets for combustion engines in general F01N; jet pipes or nozzles for jet-propulsion plants per se F02K; plants characterised by the form or arrangement of the jet pipe or nozzle F02K) {attitude, flight direction, or altitude control by jet reaction B64C}
Definition statement
This subclass/group covers:

Exhaust outlets

Turbine exhaust nozzles.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Jet pipes or nozzles
Exhaust nozzles for combustion engines
Special rules of classification within this group

There will be an indexing scheme for the following:

Exhausts with means to reduce the infrared emission.

Arrangements in connection with fuel supply for power plant ( refuelling during flight B64D 39/00)
Definition statement
This subclass/group covers:

Fuel supply systems

Gauging.

References relevant to classification in this group
This subclass/group does not cover:
Refuelling during flight
Informative references
Attention is drawn to the following places, which may be of interest for search:
Fuel tanks for vehicles
{ Accessories not provided for in the groups B64D 37/02 to B64D 37/28}
Definition statement
This subclass/group covers:

Plugs for fuel tanks

Other accessories for fuel supply.

Safety measures not otherwise provided for, e.g. preventing explosive conditions ( extinguishing or preventing fires in aircraft A62C)
Definition statement
This subclass/group covers:

Inerting systems

Fire extinguishing

Ram shock protection.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Extinguishing or preventing fires in aircraft
Special rules of classification within this group

There will be an indexing scheme for the following:

Fuel tanks with provisions for reducing hydraulic ram shocks due to projectile impact.

Refuelling during flight ( filling or emptying fuel tanks B64D 37/14)
Definition statement
This subclass/group covers:

Controlling the position of the refuelling boom or hose.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Filling or emptying tanks
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Refuelling boom
rigid pipe for refuelling
Refuelling house
flexible house for refuelling; normally rolled on a reel
Means for paying-in or out hose
Definition statement
This subclass/group covers:

Reels for refuelling hoses

Telescopic arrangements for refuelling booms.

Adaptations of hose construction ( pipes in general F16L)
Definition statement
This subclass/group covers:

Constructional details or accessories for refuelling booms or hoses.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Pipes in general
Connecting hose to aircraft; Disconnecting hose therefrom
Definition statement
This subclass/group covers:

Valves for refuelling booms or hoses

Connection devices for booms or hoses

Connection devices for the receiving aircraft.

Power installations for auxiliary purposes
Definition statement
This subclass/group covers:

Mounting Auxiliary Power Units (APU) in aircraft.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Auxiliary Power Units (APU)
Special rules of classification within this group

There will be an indexing scheme for the following:

Disposition or mounting of APU in aircraft

Fuel cells used as APU.

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
APU
Auxiliary Power Unit
Arrangements or adaptations of instruments ( arrangements of cameras B64D 47/08; aeronautical measuring instruments per se G01C)
Definition statement
This subclass/group covers:

Cockpit dashboards.

References relevant to classification in this group
This subclass/group does not cover:
Arrangement of cameras
Informative references
Attention is drawn to the following places, which may be of interest for search:
Aircraft instruments
Head Up Displays (HUD)
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
HUD
Head Up Display
for indicating aircraft speed or stalling conditions
Definition statement
This subclass/group covers:

Arrangement of Pitot tubes.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Flight data probes
Aircraft indicators or protectors not otherwise provided for ( camouflage F41H 3/00)
Definition statement
This subclass/group covers:

Mounting and arrangements of crash recorders

Miscellaneous indicators.

References relevant to classification in this group
This subclass/group does not cover:
Stealth or armoured structures
Informative references
Attention is drawn to the following places, which may be of interest for search:
Crash recorders casings
Camouflage
Special rules of classification within this group

There will be an indexing scheme for the following:

Systems for avoiding bird strikes (air intakes excluded)

Mounting of crash recorders, automatic mayday signalling, flight data recording

Cabin signs; e.g. seat number or exit lights or signs

Supports in the cockpit for flight bags; e.g. supports for electronic tablets used as flight bags

Indicators for detecting or indicating a hard landing

Failure detection means, e.g. for flutter, vibration, etc.

Fire and erosion protectors.

Synonyms and Keywords

In patent documents the following expressions expressions/words "crash recorder" and "black box" are often used as synonyms.

{Devices specially adapted to indicate the position of a movable element of the aircraft, e.g. landing gear}
Definition statement
This subclass/group covers:

Asymmetric flap detection systems

Landing gear deployment detection systems.

{Devices specially adapted for the protection against criminal attack, e.g. anti-hijacking systems}
Definition statement
This subclass/group covers:

Protection systems against hijacking.

Special rules of classification within this group

There will be an indexing scheme for the following:

Security communications, e.g. for communicating emergency situations to ground traffic control or between crew members

Bomb detection systems for cabins or luggage

Blocking pilot's control and directing aircraft from the ground avoiding particular air space zones

Preventing the use of electronic equipment during flight, e.g. use of GSM's

Restraining passengers within seats or particular zones; compartmenting cabins for this purpose.

Detecting passenger or pilot behaviour by sensors, identification means or biometric data.

Lightning protectors; Static dischargers ( in general H01T)
Definition statement
This subclass/group covers:

Conductive rivets

Making composite structures conductive.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Lightning protectors in general
This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013