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Color Curly Brackets (indicating CPC extensions to IPC)

CPC
COOPERATIVE PATENT CLASSIFICATION
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GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; gas-turbine combustion chambers F23R; using gas turbines in compression refrigeration plants F25B 11/00; using gas-turbine plants in vehicles, see the relevant vehicle classes)
NOTE
-
This subclass covers:

- combustion product or hot gas turbine plants;
- internal combustion turbines or turbine plants;
- turbine plants in which the working fluid is an unheated,
pressurised gas.

This subclass does not cover:

- steam turbine plants, which are covered by subclass F01K;
- special vapour plants, which are covered by subclass F01K.
-
{
combined cycle plants, which are covered by subclass F01K
23/00
}

In this subclass, the following expression is used with the meaning indicated:

- "gas-turbine plants" covers all the subject matter of Note
(1) above and covers also features of jet-propulsion plants
common to gas-turbine plants.

Attention is drawn to the Notes preceding class F01.

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Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion product F02C 3/00, F02C 5/00)
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F02C 1/002
.
{
using an auxiliary fluid
}
F02C 1/005
. .
{
being recirculated
}
F02C 1/007
.
{
combination of cycles
}
F02C 1/02
.
the working fluid being an unheated pressurised gas
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F02C 1/04
.
the working fluid being heated indirectly
{
(in a fluidised-bed combustor F02C 3/205)
}
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F02C 1/05
. .
characterised by the type or source of heat, e.g. using nuclear or solar energy
F02C 1/06
. . .
using reheated exhaust gas (F02C 1/08 takes precedence)
F02C 1/08
. .
Semi-closed cycles
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F02C 1/10
. .
Closed cycles
F02C 1/105
. . .
{
construction; details
}
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Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00)
F02C 3/02
.
using exhaust-gas pressure in a pressure exchanger to compress combustion-air (pressure exchangers per se F04F 13/00)
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F02C 3/04
.
having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16)
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F02C 3/045
. .
having compressor and turbine passages in a single rotor-module (F02C 3/073 takes precedence)
F02C 3/05
. . .
the compressor and the turbine being of the radial flow type
F02C 3/055
. .
the compressor being of the positive-displacement type
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F02C 3/06
. .
the compressor comprising only axial stages (F02C 3/10 takes precedence)
F02C 3/062
. . .
{
the turbine being of the radial-flow type
}
F02C 3/064
. . .
{
the compressor having concentric stages
}
F02C 3/067
. . .
having counter-rotating rotors (F02C 3/073 takes precedence)
F02C 3/073
. . .
the compressor and turbine stages being concentric
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F02C 3/08
. .
the compressor comprising at least one radial stage (F02C 3/10 takes precedence)
F02C 3/085
. . .
{
the turbine being of the radial-flow type (radial-radial) (F02C 3/05 takes precedence)
}
F02C 3/09
. . .
of the centripetal type
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F02C 3/10
. .
with another turbine driving an output shaft but not driving the compressor
F02C 3/103
. . .
{
the compressor being of the centrifugal type
}
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F02C 3/107
. .
with two or more rotors connected by power transmission
F02C 3/113
. . .
with variable power transmission between rotors
F02C 3/13
. .
having variable working fluid interconnections between turbines or compressors or stages of different rotors
{
(controlling flow ratio between different flows of multi-flow jet-propulsion plant, e.g. ducted fan F02K 3/075)
}
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F02C 3/14
.
characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F23R; F02C 3/205 takes precedence)
F02C 3/145
. .
{
the combustion chamber being in the reverse flow-type
}
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F02C 3/16
. .
the combustion chambers being formed at least partly in the turbine rotor
{
or in an other rotating part of the plant
}
F02C 3/165
. . .
{
the combustion chamber contributes to the driving force by creating reactive thrust
}
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F02C 3/20
.
using a special fuel, oxidant, or dilution fluid to generate the combustion products
F02C 3/205
. .
{
in a fluidised-bed combustor (in combination with a steam cycle see F01K 23/061; fluidised-bed apparatus in general B01J 8/18; fluidised-bed combustors in general F23C 10/00)
}
F02C 3/22
. .
the fuel or oxidant being gaseous at standard temperature and pressure (F02C 3/28 takes precedence)
F02C 3/24
. .
the fuel or oxidant being liquid at standard temperature and pressure
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F02C 3/26
. .
the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
F02C 3/28
. . .
using a separate gas producer for gasifying the fuel before combustion
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F02C 3/30
. .
Adding water, steam or other fluids
{
for influencing combustion, e.g. to obtain cleaner exhaust gases (F02C 7/141, F02C 7/30, F01D 21/00, F01K 21/04, F23D 11/10 take precedence)
}
F02C 3/305
. . .
{
Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids (F01K 21/04 takes precedence)
}
F02C 3/32
.
Inducing air flow by fluid jet, e.g. ejector action
F02C 3/34
.
with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle
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F02C 3/36
.
Open cycles
F02C 3/365
. .
{
a part of the compressed air being burned, the other part being heated indirectly (in a fluidised-bed combustor F02C 3/205)
}
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Gas-turbine plants characterised by the working fluid being generated by intermittent combustion
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F02C 5/02
.
characterised by the arrangement of the combustion chamber in the chamber in the plant (combustion chambers per se F23R)
F02C 5/04
. .
the combustion chambers being formed at least partly in the turbine rotor
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F02C 5/06
.
the working fluid being generated in an internal-combustion gas generated of the positive-displacement type having essentially no mechanical power output (internal-combustion engines with prolonged expansion using exhaust gas turbines F02B)
F02C 5/08
. .
the gas generator being of the free-piston type
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F02C 5/10
.
the working fluid forming a resonating or oscillating gas column, i.e. the combustion chambers having no positively actuated valves, e.g. using Helmholtz effect
F02C 5/11
. .
using valveless combustion chambers
F02C 5/12
.
the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants
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F02C 6/00
Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus (aspects predominantly concerning such apparatus, see the relevant classes for the apparatus); Adaptations of gas- turbine plants for special use
F02C 6/003
.
{
Gas-turbine plants with heaters between turbine stages
}
F02C 6/006
.
{
Open cycle gas-turbine in which the working fluid is expanded to a pressure below the atmospheric pressure and then compressed to atmosperic pressure
}
F02C 6/02
.
Plural gas-turbine plants having a common power output
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.
Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F02C 6/18 takes precedence;
{
for a fluidised-bed combustor F02C 3/205
}
)
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. .
providing compressed gas (F02C 6/10 takes precedence)
. . .
the gas being bled from the gas-turbine compressor
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. .
supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
. . .
Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
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F02C 6/14
.
Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
F02C 6/16
. .
for storing compressed air
.
Using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F25B 27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K 23/10)
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F02C 6/20
.
Adaptations of gas-turbine plants for driving vehicles
F02C 6/203
. .
{
the vehicles being waterborne vessels
}
F02C 6/206
. .
{
the vehicles being airscrew driven
}
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Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C 1/00 to F02C 6/00; Air intakes for jet-propulsion plants (controlling F02C 9/00)
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F02C 7/04
.
Air intakes for gas-turbine plants or jet-propulsion plants
F02C 7/042
. .
having variable geometry
F02C 7/045
. .
having provisions for noise suppression
F02C 7/047
. .
Heating to prevent icing
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. .
having provisions for obviating the penetration of damaging objects or particles
F02C 7/052
. . .
with dust-separation devices
F02C 7/055
. . .
with intake grids, screens or guards
F02C 7/057
. .
Control or regulation (conjointly with fuel supply control F02C 9/50, with nozzle area control F02K 1/16)
F02C 7/06
.
Arrangements of bearings (bearings F16C); Lubricating (
{
of turbo machines F01D 25/18; of machines or
}
engines in general F01M)
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F02C 7/08
.
Heating air supply before combustion, e.g. by exhaust gases
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F02C 7/10
. .
by means of regenerative heat-exchangers
F02C 7/105
. . .
of the rotary type (rotary heat exchangers per se F28D)
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F02C 7/12
.
Cooling of plants (of component parts, see the relevant subclasses, e.g. F01D; cooling of engines in general F01P)
F02C 7/125
. .
{
by partial arc admission of the working fluid or by intermittent admission of working and cooling fluid
}
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F02C 7/14
. .
of fluids in the plant,
{
e.g. lubricant or fuel (F02C 7/185 takes precedence)
}
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F02C 7/141
. . .
of working fluid
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F02C 7/143
. . . .
before or between the compressor stages
F02C 7/1435
. . . . .
{
by water injection
}
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F02C 7/16
. .
characterised by cooling medium
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F02C 7/18
. . .
the medium being gaseous, e.g. air
{
(F02C 7/125 takes precedence)
}
F02C 7/185
. . . .
{
Cooling means for reducing the temperature of the cooling air or gas
}
F02C 7/20
.
Mounting or supporting of plant; Accomodating heat expansion or creep
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.
Fuel supply systems
F02C 7/222
. .
{
Fuel flow conduits, e.g. manifolds
}
. .
Heating fuel before feeding to the burner
F02C 7/228
. .
Dividing fuel between various burners
F02C 7/232
. .
Fuel valves
{
(control of fuel supply by means of fuel metering valves F02C 9/263)
}
; Draining valves or systems (valves in general F16K)
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F02C 7/236
. .
Fuel delivery systems comprising two or more pumps
F02C 7/2365
. . .
{
comprising an air supply system for the atomisation of fuel
}
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F02C 7/24
.
Heat or noise insulation (air intakes having provisions for noise suppression F02C 7/045; turbine exhaust heads, chambers, or the like F01D 25/30; silencing nozzles of jet-propulsion plants F02K 1/00)
F02C 7/25
. .
Fire protection or prevention (in general A62)
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F02C 7/26
.
Starting; Ignition
F02C 7/262
. .
Restarting after flame-out
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F02C 7/264
. .
Ignition
F02C 7/266
. . .
Electric (sparking plugs H01T)
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. .
Starting drives for the rotor,
{
acting directly on the rotor of the gas turbine to be started
}
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. . .
Fluid drives (turbine starters F02C 7/277)
. . . .
generated by cartridges
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. . .
Mechanical drives
. . . .
the starter being a
{
separate
}
turbine
.
Arrangement of seals
.
Preventing corrosion
{
or unwanted deposits
}
in gas-swept spaces
.
Arrangement, mounting, or driving, of auxiliaries
F02C 7/36
.
Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user (
{
F02C 3/107 to F02C 3/13 and
}
F02C 7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H)
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Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants (controlling air intakes F02C 7/057; controlling turbines F01D; controlling compressors F04D 27/00; controlling in general G05)
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F02C 9/16
.
Control of working fluid flow (F02C 9/48 takes precedence; control of air-intake flow F02C 7/057)
F02C 9/18
. .
by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
{
(F02C 3/113 takes precedence)
}
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F02C 9/20
. .
by throttling; by adjusting vanes
F02C 9/22
. . .
by adjusting turbine vanes
F02C 9/24
. .
Control of the pressure level in closed cycles
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F02C 9/26
.
Control of fuel supply (F02C 9/48 takes precedence; fuel valves F02C 7/232)
F02C 9/263
. .
{
by means of fuel metering valves
}
F02C 9/266
. .
{
specially adapted for gas turbines with intermittent fuel injection
}
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F02C 9/28
. .
Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed (F02C 9/30 to F02C 9/38, F02C 9/44 take precedence)
F02C 9/285
. . .
{
Mechanical command devices linked to the throttle lever
}
F02C 9/30
. .
characterised by variable fuel pump output
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F02C 9/32
. .
characterised by throttling of fuel (F02C 9/38 takes precedence)
F02C 9/34
. . .
Joint control of separate flows to main and auxiliary burners
F02C 9/36
. .
characterised by returning of fuel to sump (F02C 9/38 takes precedence)
F02C 9/38
. .
characterised by throttling and returning of fuel to sump
F02C 9/40
. .
specially adapted to the use of a special fuel or a plurality of fuels
F02C 9/42
. .
specially adapted for the control of two or more plants simultaneously
F02C 9/44
. .
responsive to the speed of aircraft, e.g. Mach number control, optimisation of fuel consumption
F02C 9/46
. .
Emergency fuel control
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F02C 9/48
.
Control of fuel supply conjointly with another control of the plant (with nozzle section control F02K 1/17)
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F02C 9/50
. .
with control of working fluid flow
F02C 9/52
. . .
by bleeding or by-passing the working fluid
F02C 9/54
. . .
by throttling the working fluid, by adjusting vanes
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F02C 9/56
. .
with power transmission control
F02C 9/58
. . .
with control of a variable-pitch propeller
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Last Modified: 10/10/2013