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 turbines |
F01K |
Steam engine plantssteam accumulatorsengine plants not otherwise provided forengines using special working fluids or cycles |
F01L |
Cyclically operating valves for machines or engines |
F01M |
Lubricating of machines or engines in generallubricating internal-combustion enginescrankcase ventilating |
F01N |
Gas-flow silencers or exhaust apparatus for machines or engines in generalgas-flow silencers or exhaust apparatus for internal-combustion engines |
F01P |
Cooling of machines or engines in generalcooling of internal-combustion engines |
F02B |
Internal-combustion piston enginescombustion engines in general |
F02C |
Gas-turbine plantsair intakes for jet-propulsion plantscontrolling fuel supply in air-breathing jet-propulsion plants |
F02D |
Controlling combustion engines |
F02F |
Cylinders, pistons, or casings for combustion enginesarrangements of sealings in combustion engines |
F02G |
Hot-gas or combustion-product positive-displacement engine plantsuse 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 enginesstarting aids for such engines, not otherwise provided for |
F02P |
Ignition, other than compression ignition, for internal-combustion enginestesting of ignition timing in compression-ignition engines |
F03B |
Machines or engines for liquids |
F03C |
Positive-displacement engines driven by liquids |
F03D |
Wind motors |
F03G |
Spring, weight, inertia, or like motorsmechanical-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 liquidspumps |
F04C |
Rotary-piston, or oscillating-piston, positive-displacement machines for liquidsrotary-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 inertia of fluid to be pumpedsiphons |
F15B |
Systems acting by means of fluids in generalfluid-pressure actuators, e.g. servomotorsdetails 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 or wedgesjoints or jointing |
F16C |
Shaftsflexible shaftsmechanical means for transmitting movement in a flexible sheathingelements of crankshaft mechanismspivotspivotal connectionsrotary engineering elements other than gearing, coupling, clutch or brake elementsbearings |
F16D |
Couplings for transmitting rotationclutchesbrakes |
F16F |
Springsshock-absorbersmeans for damping vibration |
F16G |
Belts, cables, or ropes, predominantly used for driving purposeschainsfittings predominantly used therefor |
F16H |
Gearing |
F16J |
Pistonscylinderspressure vessels in generalsealings |
F16K |
Valvestapscocksactuating-floatsdevices for venting or aerating |
F16L |
Pipesjoints or fittings for pipessupports for pipes, cables or protective tubingmeans for thermal insulation in general |
F16M |
Frames, casings or beds of engines, machines or apparatus, not specific to engines, machines or apparatus provided for elsewherestandssupports |
F16N |
Lubricating |
F16P |
Safety devices in general |
F16S |
Constructional elements in generalstructures 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 gasesfixed-capacity gas-holdersfilling vessels with, or discharging from vessels, compressed, liquefied, or solidified gases |
F17D |
Pipe-line systemspipe-lines |
F21H |
Incandescent mantlesother incandescent bodies heated by combustion |
F21K |
Non-electric light sources using luminescencelight sources using electrochemiluminescencelight sources using charges of combustible materiallight sources using semiconductor devices as light-generating elementslight sources not otherwise provided for |
F21L |
Lighting devices or systems thereof, being portable or specially adapted for transportation |
F21S |
Non-portable lighting devicessystems thereofvehicle lighting devices specially adapted for vehicle exteriors |
F21V |
Functional features or details of lighting devices or systems thereofstructural combinations of lighting devices with other articles, not otherwise provided for |
F21W |
Indexing scheme associated with subclasses , , and , relating to uses or applications of lighting devices or systems |
F21Y |
Indexing scheme associated with subclasses , , and , relating to the form or the kind of the light sources or of the colour of the light emitted |
F22B |
Methods of steam generationsteam boilers |
F22D |
Preheating, or accumulating preheated, feed-water for steam generationfeed-water supply for steam generationcontrolling water level for steam generationauxiliary devices for promoting water circulation within steam boilers |
F22G |
Superheating of steam |
F23B |
Methods or apparatus for combustion using only solid fuel |
F23C |
Methods or apparatus for combustion using fluid fuel or solid fuel suspended in air |
F23D |
Burners |
F23G |
Cremation furnacesconsuming waste or low grade fuels by combustion |
F23H |
Gratescleaning or raking grates |
F23J |
Removal or treatment of combustion products or combustion residuesflues |
F23K |
Feeding fuel to combustion apparatus |
F23L |
Supplying air or non-combustible liquids or gases to combustion apparatus in generalvalves or dampers specially adapted for controlling air supply or draught in combustion apparatusinducing draught in combustion apparatustops for chimneys or ventilating shaftsterminals for flues |
F23M |
Casings, linings, walls or doors specially adapted for combustion chambers, e.g. firebridgesdevices for deflecting air, flames or combustion products in combustion chamberssafety arrangements specially adapted for combustion apparatusdetails of combustion chambers, not otherwise provided for |
F23N |
Regulating or controlling combustion |
F23Q |
Ignitionextinguishing 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 implements for use in connection with stoves or ranges |
F24C |
Domestic stoves or rangesdetails of domestic stoves or ranges, of general application |
F24D |
Domestic- or space-heating systems, e.g. central heating systemsdomestic hot-water supply systemselements or components therefor |
F24F |
Air-conditioningair-humidificationventilationuse of air currents for screening |
F24H |
Fluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general |
F24J |
Production or use of heat not otherwise provided for (materials therefor C09K 5/00;engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. f03g for using natural heat) |
F24S |
Solar heat collectorssolar heat systems |
F24T |
Geothermal collectorsgeothermal systems |
F24V |
Collection, production or use of heat not otherwise provided for |
F25B |
Refrigeration machines, plants or systemscombined heating and refrigeration systemsheat pump systems |
F25C |
Producing, working or handling ice |
F25D |
Refrigeratorscold roomsice-boxescooling or freezing apparatus not otherwise provided for |
F25J |
Liquefaction, solidification, or separation of gases or gaseous mixtures by pressure and cold treatment |
F26B |
Drying solid materials or objects by removing liquid therefrom |
F27B |
Furnaces, kilns, ovens or retorts in generalopen 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 |
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 contactheat storage plants or apparatus in general |
F28F |
Details of heat-exchange or heat-transfer apparatus, of general application |
F28G |
Cleaning of internal or external surfaces of heat-exchange or heat-transfer conduits, e.g. water tubes of boilers |
F41A |
Functional features or details common to both smallarms and ordnance, e.g. cannonsmountings for smallarms or ordnance |
F41B |
Weapons for projecting missiles without use of explosive or combustible propellant chargeweapons not otherwise provided for |
F41C |
Smallarms, e.g. pistols or riflesaccessories therefor |
F41F |
Apparatus for launching projectiles or missiles from barrels, e.g. cannonslaunchers for rockets or torpedoesharpoon guns |
F41G |
Weapon sightsaiming |
F41H |
Armourarmoured turretsarmoured or armed vehiclesmeans of attack or defence, e.g. camouflage, in general |
F41J |
Targetstarget rangesbullet catchers |
F42B |
Explosive charges, e.g. for blastingfireworksammunition |
F42C |
Ammunition fuzesarming or safety means therefor |
F42D |
Blasting |
F99Z |
Subject matter not otherwise provided for in this section |