WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F　j　MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING ENGINES OR PUMPS

SUBSECTION: Engines or pumps

F01　　MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES

F01B　MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES

F01C　ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES

F01D　NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. 　STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES

F01L　CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

F01M　LUBRICATING OF MACHINES OR ENGINES IN GENERAL ; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING

F01N　GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES

F01P　COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES

F02B　INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL

F02C　GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS

F02D　CONTROLLING COMBUSTION ENGINES

F02F　CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES

F02G　HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS ; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR

F02K　JET-PROPULSION PLANTS

F02M　SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

F02N　STARTING OF COMBUSTION ENGINES ; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR

F02W　INDEXING SCHEME RELATING TO TURBINES; GAS TURBINES

F03B　MACHINES OR ENGINES FOR LIQUIDS

F03C　POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS

F03D　WIND MOTORS

F03G　SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR

F03H　PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR

F04B　POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS

F04C　ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS

F04D　NON-POSITIVE DISPLACEMENT PUMPS

F04F　PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIAOF FLUID TO BE PUMPES ; SIPHONS

F05B　INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY

F05C　INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES

F05D　INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

F15B　SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR

F15C　FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES

F15D　FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS

F16B　DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING

F16C　SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

F16D　COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

F16F　SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION

F16G　BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR

F16H　GEARING

F16J　PISTONS ; CYLINDERS; SEALINGS

F16K　VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING

F16L　PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

F16M　FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES OR APPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS OR SUPPORTS

F16N　LUBRICATING

F16P　SAFETY DEVICES IN GENERAL;

F16S　CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL

F16T　STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS

F17B　GAS-HOLDERS OF VARIABLE CAPACITY

F17C　VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES

F17D　PIPE-LINE SYSTEMS; PIPE-LINES

F21H　MANTLES; OTHER INCANDESCENT BODIES HEATED BY COMBUSTION

F21K　LIGHT SOURCES NOT OTHERWISE PROVIDED FOR

F21L　LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION

F21S　NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF

F21V　DETAILS OF LIGHTING DEVICES, OF GENERAL APPLICATION

F21W　INDEXING SCHEME RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS

F21Y　INDEXING SCHEME RELATING TO THE FORM OF THE LIGHT SOURCES

F22B　METHODS OF STEAM GENERATION; STEAM BOILERS

F22D　PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER ; FEED-WATER SUPPLY ; CONTROLLING WATER LEVEL ; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS

F22G　SUPERHEATING OF STEAM

F23B　METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL

F23C　COMBUSTION APPARATUS USING FLUENT FUEL

F23D　BURNERS

F23G　CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION

F23H　GRATES ; CLEANING OR RAKING GRATES

F23J　REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES ; FLUES

F23K　FEEDING FUEL TO COMBUSTION APPARATUS

F23L　AIR SUPPLY; DRAUGHT-INDUCING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS

F23M　CONSTRUCTIONAL DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR

F23N　REGULATING OR CONTROLLING COMBUSTION

F23Q　IGNITION ; Extinguishing-devices

F23R　GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS

F24B　DOMESTIC STOVES OR RANGES FOR SOLID FUELS

F24C　OTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION

F24D　DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR

F24F　AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIR CURRENTS FOR SCREENING

F24H　FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL

F24J　PRODUCING OR USE OF HEAT NOT OTHERWISE PROVIDED FOR

F25B　REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS

F25C　PRODUCTION, WORKING, STORING OR DISTRIBUTION OF ICE

F25D　REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOTCOVERED BY ANY OTHER SUBCLASS

F25J　LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS MIXTURESBY PRESSURE AND COLD TREATMENT

F26B　DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM

F27B　FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS

F27D　DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE

F27M　INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS

F28B　STEAM OR VAPOUR CONDENSERS

F28C　HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION

F28D　HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT

F28F　DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION

F28G　CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS

F41A　FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

F41C　SMALLARMS, e.g. PISTOLS, RIFLES ; ACCESSORIES THEREFOR

F41F　APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS

F41G　WEAPON SIGHTS; AIMING

F41H　ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL

F41J　TARGETS; TARGET RANGES; BULLET CATCHERS

F42B　EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION

F42C　AMMUNITION FUZES ; ARMING OR SAFETY MEANS THEREFOR

F42D　BLASTING