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JET-PROPULSION PLANTS (arrangement or mounting of jet-propulsion plants in land vehicles or vehicles in general B60K; arrangement or mounting of jet-propulsion plants in waterborne vessels B63H; controlling aircraft attitude, flight direction or altitude by jet reaction B64C; arrangement or mounting of jet-propulsion plants in aircraft B64D; plants characterised by the power of the working fluid being divided between jet-propulsion and another form of propulsion, e.g. propeller, F02B, C; features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C)
Definition statement
This subclass/group covers:

Jet propulsion plants

References relevant to classification in this subclass
This subclass/group does not cover:
Arrangement or mounting of jet-propulsion plants in land vehicles or vehicles in general
Arrangement or mounting of jet-propulsion plants in waterborne vessels
Controlling aircraft attitude, flight direction or altitude by jet reaction
Arrangement or mounting of jet-propulsion plants in aircraft
Plants characterised by the power of the working fluid being divided between jet propulsion and another form of propulsion, e.g. propeller
Features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants
Special rules of classification within this subclass

In this subclass the Indexing Code scheme F05D is used as follows:

F05D 2200/00 Mathematical features

F05D 2210/00 Working fluid

F05D 2220/00 Application

F05D 2230/00 Manufacture

F05D 2240/00 Components

F05D 2250/00 Geometry

F05D 2260/00 Function

F05D 2300/00 Materials

Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto (rocket nozzles F02K 9/97 )
Definition statement
This subclass/group covers:

Plants characterised by the form or arrangement of the jet pipe or nozzle, jet pipes or nozzles peculiar thereto.

taken from US3881315

Informative reference
Attention is drawn to the following places, which may be of interest for search:
Rocket nozzles
[N: with means to modify the direction of thrust vector (F02K 1/54 takesprecedence; thrust vectoring of rockets F02K 9/80 ; aerodynamic vectoring surfaces B64C)]
Informative references
Attention is drawn to the following places, which may be of interest for search:
Aerodynamic vectoring surfaces
Thrust vectoring of rockets
Special rules of classification within this subgroup

F02K 1/54 takes precedence

[N: by using one or more swivable nozzles rotating about their own axis]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from DE1049711

[N: within one plane only]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US3258206

[N: in any rearward direction]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from FR1025827

Mounting of an exhaust cone in the jet pipe
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from GB812513

by axially moving or transversely deforming an internal member, e.g. the exhaust cone
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US4244294

by transversely deforming an internal member
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US2641104

by axially moving an external member, e.g. a shroud (F02K 1/12 takes precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US3138921

Special rules of classification within this subgroup

F02K 1/12 takes precedence

by distorting the jet pipe or nozzle
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US2593420

by means of pivoted eyelids
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US2637972

[N: of one series of flaps hinged at their upstream ends on a fixed structure (F02K 1/1215 to F02K 1/1276 take precedence)]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from GB750307

Special rules of classification within this subgroup

F02K 1/1215 to F02K 1/1276 take precedence

[N: of two series of flaps, the upstream series having its flaps hinged at their upstream ends on a fixed structure, and the downstream series having its flaps hinged at their downstream ends on a fixed structure]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from GB871274

[N: of two series of flaps, the upstream series having its flaps hinged at their upstream ends on a fixed structure and the downstream series having its flaps hinged at their upstream ends on the downstream ends of the flaps of the upstream series]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US6352211

[N: of two series of flaps, both having their flaps hinged at their upstream ends on a fixed structure]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from FR1602540

[N: of two series of flaps, the upstream series having its flaps hinged at their upstream ends on a fixed structure and the downstream series having its flaps hinged at their upstream ends on a substantially axially movable structure]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US2870600

[N: of two series of flaps, the upstream series having its flaps hinged at their upstream ends on a fixed structure and the downstream series having its flaps hinged at their downstream ends on a substantially axially movable structure]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US2974481

[N: of one series of flaps hinged at their upstream ends on a substantially axially movable structure]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US5273213

[N: of three series of flaps, the upstream series having its flaps hinged at their upstream ends on a fixed structure and the internal downstream series having its flaps hinged at their downstream ends on the downstream ends of the flaps of the external downstream series hinged on a fixed structure at their upstream ends]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

having an ejector
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Nozzles having means for dividing the jet into a plurality of partial jets or having an elongated cross-section outlet
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

the means being movable into an inoperative position
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Nozzles having means, e.g. a shield, reducing sound radiation in a specified direction (F02K 1/40 takes precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Special rules of classification within this subgroup

F02K 1/40 takes precedence

Nozzles having means for adding air to the jet or for augmenting the mixing region between the jet and the ambient air, e.g. for silencing (F02K 1/28, F02K 1/36, F02K 1/38 take precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Special rules of classification within this subgroup

F02K 1/28, F02K 1/36, F02K 1/38 take precedence

Corrugated nozzles
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Deflecting outwardly a portion of the jet by retractable scoop-like baffles
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Nozzles specially constructed for positioning adjacent to another nozzle or to a fixed member, e.g. fairing
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

[N: in specified direction, e.g. to obviate its reinjection]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

by blocking the rearward discharge by means of a translatable member
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Reversers mounted on the inner cone or the nozzle housing or the fuselage
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

by blocking the rearward discharge by means of pivoted eyelids or clamshells, e.g. target-type reversers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

the aft end of the engine cowling being movable to uncover openings for the reversed flow
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

by blocking the rearward discharge by means of flaps
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

the aft end of the engine cowling being movable to uncover openings for the reversed flow
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

using inflatable diaphragms
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

using reversing fan blades
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Reversers mounted on the engine housing downstream of the fan exhaust section
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

using thrust reverser flaps or doors mounted on the fan housing
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

the aft end of the fan housing being movable to uncover openings in the fan housing for the reversed flow
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Control or regulation of thrust reversers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

with actuating systems or actuating devices; Arrangement of actuators for thrust reversers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

with blocking systems or locking devices, arrangement of locking devices for thrust reversers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Other construction of jet pipes
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Couplings or connections
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Sealing devices therefor, e.g. for movable parts of jet pipes or nozzle flaps
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Jet pipe walls, e.g. liners
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Heat insulating structures or liners, cooling arrangements, e.g. post combustion liners; infra-red radiation suppressors
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Informative reference
Wall structures in combustion chambers
Infra-red radiation suppressors
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

Sound absorbing structures or liners
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

taken from US3215172

Informative reference
Acoustic liners
G10G11/00
Noise suppression in air intakes
Plants including a gas turbine driving a compressor or a ducted fan
Definition statement
This subclass/group covers:

Mainly ducted gas turbine plants with ducted fans, whereby the main flow which is only slightly compressed by a fan or the like bypasses the core engine; Heating of the bypass flow; Afterburners.

taken from DE102009036011

Plants including an engine, other than a gas turbine, driving a compressor or a ducted fan
Definition statement
This subclass/group covers:

Plants including an engine, other than a gas turbine, driving a compressor or a ducted fan.

taken from EP1798371

Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof (rocket-engine plants F02K 9/00 )
Definition statement
This subclass/group covers:

Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof

Synonyms and Keywords

In patent documents the following abbreviations are often used:

Ram jet
Compression of the working fluid caused by the engine's forward motion without a rotary compressor
Scram jet
Supersonic combustion ram jet
Rocket- engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof (chemical composition of propellants C06B, C06D) [N: launching apparatus for rockets F41F 3/04 ; explosive charges, ammunition F42B]
Definition statement
This subclass/group covers:

Rocket-engine plant related aspects such as solid and liquid propellant rocket plants; Constructional details of the charges; Supply and feeding of propellant; Starting and restarting.

Informative reference
Cosmonautic vehicles
Chemical composition of propellants
Launching apparatus for rockets
Explosive charges, ammunition
Subject matter not provided for in other groups of this subclass
This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013