<titlePart> <text>SECTION F <emdash/> MECHANICAL ENGINEERING</text> </titlePart> <titlePart> <text>LIGHTING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>WEAPONS</text> </titlePart> <titlePart> <text>BLASTING</text> </titlePart>

<titlePart> <text>SECTION F <emdash/> MECHANICAL ENGINEERING</text> </titlePart> <titlePart> <text>LIGHTING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>WEAPONS</text> </titlePart> <titlePart> <text>BLASTING</text> </titlePart> MACHINES positive displacement rotary or oscillating piston liquid and elastic fluid or elastic fluid liquid only reciprocating piston or other liquid and elastic fluid or elastic fluid liquid only non-positive displacement liquid and elastic fluid or elastic fluid liquid only ENGINES positive displacement rotary or oscillating piston liquid and elastic fluid or elastic fluid liquid only reciprocating piston or other liquid and elastic fluid or elastic fluid liquid only non-positive displacement liquid and elastic fluid or elastic fluid liquid only PUMPS positive displacement rotary or oscillating piston reciprocating piston or other non-positive displacement <titlePart> <text>LIGHTING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>RANGES</text> </titlePart> <titlePart> <text>VENTILATING</text> <entryReference>protecting plants by heating in gardens, orchards, or forests <sref ref="A01G0013060000"/></entryReference> <entryReference>baking ovens and apparatus <sref ref="A21B"/></entryReference> <entryReference>cooking devices other than ranges <sref ref="A47J"/></entryReference> <entryReference>forging <sref ref="B21J"/>, <sref ref="B21K"/></entryReference> <entryReference>specially adapted for vehicles, see the relevant subclasses of classes <mref ref="B60" endRef="B64"/></entryReference> <entryReference>combustion apparatus in general <sref ref="F23"/></entryReference> <entryReference>drying <sref ref="F26B"/></entryReference> <entryReference>ovens in general <sref ref="F27"/></entryReference> <entryReference>electric heating elements or arrangements <sref ref="H05B"/></entryReference> </titlePart> In this class, the following terms are used with the meanings indicated: "stove" includes apparatus which may have an open fire, e.g. fireplace; "range" means an apparatus for cooking having elements that perform different cooking operations or cooking and heating operations. <titlePart> <text>AIR-CONDITIONING</text> </titlePart> <titlePart> <text>AIR-HUMIDIFICATION</text> </titlePart> <titlePart> <text>VENTILATION</text> </titlePart> <titlePart> <text>USE OF AIR CURRENTS FOR SCREENING</text> <entryReference>devices for ventilating greenhouses <sref ref="A01G"/></entryReference> <entryReference>animal husbandry <sref ref="A01K"/>, e.g. controlling humidity in incubators <sref ref="A01K0041040000"/></entryReference> <entryReference>disinfecting or sterilising of air <sref ref="A61L"/></entryReference> <entryReference>devices for reconditioning breathing air in sealed rooms or for ventilating gasproof shelters <sref ref="A62B"/></entryReference> <entryReference>filtering, washing or drying of gases <sref ref="B01D"/></entryReference> <entryReference>mixing gases with vapours or liquids in general <sref ref="B01F0003000000"/></entryReference> <entryReference>spraying <sref ref="B05B"/>, <sref ref="B05D"/></entryReference> <entryReference>removing dirt or fumes from areas where they are produced <sref ref="B08B0015000000"/></entryReference> <entryReference>ventilation, air-conditioning, or cooling, specially adapted for vehicles, see the relevant vehicle places, e.g. <sref ref="B60H"/>, <sref ref="B61D0027000000"/></entryReference> <entryReference>production of ozone <sref ref="C01B0013100000"/></entryReference> <entryReference>chimneys or flues <sref ref="E04F0017020000"/>, <sref ref="E04H0012280000"/>, <sref ref="F23J0011000000"/>, <sref ref="F23L0017020000"/></entryReference> <entryReference>air ducts or conduits <sref ref="E04F0017040000"/>, <sref ref="F16L"/></entryReference> <entryReference>ventilation in doors or windows <sref ref="E06B0007020000"/></entryReference> <entryReference>fans, blowers <sref ref="F04"/></entryReference> <entryReference>noise-absorbing in pipes or pipe systems <sref ref="F16L"/></entryReference> <entryReference>tops for chimneys or ventilating shafts <sref ref="F23L"/></entryReference> <entryReference>cooling <sref ref="F25"/></entryReference> <entryReference>details of heat-exchange or heat-transfer apparatus, of general application <sref ref="F28F"/></entryReference> <entryReference>apparatus for generating ions to be introduced into non-enclosed gases, e.g. the atmosphere, <sref ref="H01T0023000000"/></entryReference> </titlePart> In this subclass: air-humidification as auxiliary treatment in air-conditioning, i.e. in units wherein the air is also either cooled or heated, is covered by groups or ; air-humidification per se, e.g. "room humidifiers", is covered by group . In this subclass, the following terms or expressions are used with the meanings indicated: "air-conditioning" means the supply of air to rooms or spaces by means which provide for the treatment of the air in at least two of the following ways: heating cooling any other kind of treatment, e.g. humidification; "ventilation" means the supply of air to, or its extraction from, rooms or spaces, and systems for circulating air within rooms or spaces, but does not cover the mere treatment of air being supplied to, extracted from, or circulated within, rooms or spaces. Processes using enzymes or micro-organisms in order to: liberate, separate or purify a pre-existing compound or composition, or to treat textiles or clean solid surfaces of materials are further classified in subclass . AIR-CONDITIONING Room units; central systems; other systems or apparatus ; ; AIR-HUMIDIFICATION VENTILATION SCREENING BY AIR CURRENTS COMMON DETAILS Control, safety Use of energy recovery systems Other details <titlePart> <text>Air-conditioning</text> </titlePart> <titlePart> <text>Room units, e.g. receiving primary air from a central station</text> </titlePart> <titlePart> <text>in which secondary air is induced by injector action of the primary air</text> <entryReference><sref ref="F24F0001020000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>self-contained, i.e. with all apparatus for treatment installed in a common casing</text> </titlePart> <titlePart> <text>Arrangements for portability</text> </titlePart> <titlePart> <text>Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment</text> </titlePart> <titlePart> <text>Apparatus specially designed for such systems</text> <entryReference>room units <sref ref="F24F0001000000"/></entryReference> <entryReference>construction of heat-exchangers <sref ref="F28"/></entryReference> </titlePart> <titlePart> <text>characterised by the pressure or velocity of the primary air</text> <entryReference><sref ref="F24F0003044000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>operating with high pressure or high velocity</text> </titlePart> <titlePart> <text>Systems in which all treatment is given in the central station, i.e. all-air systems</text> </titlePart> <titlePart> <text>with temperature control at constant rate of air-flow</text> <entryReference><sref ref="F24F0003056000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned</text> </titlePart> <titlePart> <text>the air at least partially flowing over lighting fixtures, the heat of which is dissipated or used</text> </titlePart> <titlePart> <text>characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units</text> <entryReference><sref ref="F24F0003020000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>with separate supply and return lines for hot and cold heat-exchange fluids</text> </titlePart> <titlePart> <text>with separate supply lines and common return line for hot and cold heat-exchange fluids</text> </titlePart> <titlePart> <text>characterised by the treatment of the air otherwise than by heating and cooling</text> <entryReference><sref ref="F24F0003020000"/>, <sref ref="F24F0003060000"/> take precedence</entryReference> <entryReference>apparatus for the individual treatment, see the appropriate subclasses for the treatments</entryReference> </titlePart> <titlePart> <text>by humidification</text> </titlePart> <titlePart> <text>by dehumidification</text> </titlePart> <titlePart> <text>with both heat and humidity transfer between supplied and exhausted air</text> </titlePart> <titlePart> <text>with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature</text> </titlePart> <titlePart> <text>by purification, e.g. by filtering</text> </titlePart> <titlePart> <text>by sterilisation</text> </titlePart> <titlePart> <text>by ozonisation</text> </titlePart> <titlePart> <text>Air-conditioning systems or apparatus not covered by group <sref ref="F24F0001000000"/> or <sref ref="F24F0003000000"/></text> </titlePart> <titlePart> <text>Air-humidification</text> </titlePart> <titlePart> <text>by evaporation of water in the air</text> </titlePart> <titlePart> <text>using stationary unheated wet elements</text> </titlePart> <titlePart> <text>using moving unheated wet elements</text> </titlePart> <titlePart> <text>using heated wet elements</text> </titlePart> <titlePart> <text>heated electrically</text> </titlePart> <titlePart> <text>by forming water dispersions in the air</text> </titlePart> <titlePart> <text>using nozzles</text> <entryReference>nozzles per se, spraying in general <sref ref="B05B"/></entryReference> </titlePart> <titlePart> <text>using rotating elements</text> </titlePart> <titlePart> <text>by injection of steam into the air</text> </titlePart> <titlePart> <text>Ventilation</text> </titlePart> <titlePart> <text>with forced flow</text> <entryReference>using ducting systems <sref ref="F24F0007060000"/></entryReference> </titlePart> <titlePart> <text>using wall or window fans, displacing air through the wall or window</text> </titlePart> <titlePart> <text>Roof ventilation</text> <entryReference><sref ref="F24F0007007000"/> takes precedence</entryReference> <entryReference>ventilation of roof coverings <sref ref="E04D"/></entryReference> </titlePart> <titlePart> <text>with ducting systems</text> </titlePart> <titlePart> <text>with forced air circulation, e.g. by fan</text> </titlePart> <titlePart> <text>with separate ducts for supplied and exhausted air</text> </titlePart> <titlePart> <text>with air supply, or exhaust, through perforated wall, floor or ceiling</text> <entryReference>outlet members for directing or distributing air <sref ref="F24F0013060000"/></entryReference> </titlePart> <titlePart> <text>Use of air currents for screening, e.g. air curtain</text> <entryReference>air curtains for vehicles <sref ref="B60J0009040000"/></entryReference> </titlePart> <titlePart> <text>Common features or details</text> </titlePart> <titlePart> <text>Control or safety systems or apparatus</text> <entryReference>control valves per se<sref ref="F16K"/></entryReference> </titlePart> <titlePart> <text>Arrangement or mounting of control or safety devices</text> </titlePart> <titlePart> <text>solely for controlling the rate of air-flow</text> <entryReference><sref ref="F24F0011080000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>to constant value</text> </titlePart> <titlePart> <text>by means responsive to temperature</text> </titlePart> <titlePart> <text>solely for controlling the supply of heating or cooling fluids for secondary treatment</text> <entryReference><sref ref="F24F0011080000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>for controlling the primary treatment of air</text> </titlePart> <titlePart> <text>Use of energy recovery systems in air conditioning, ventilation or screening</text> <entryReference>with both heat and humidity transfer between supplied and exhausted air <sref ref="F24F0003147000"/></entryReference> <entryReference>heat-exchange in general <sref ref="F28"/></entryReference> </titlePart> <titlePart> <text>Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening</text> </titlePart> <titlePart> <text>Ducting arrangements</text> </titlePart> <titlePart> <text>Air-mixing units</text> <entryReference><sref ref="F24F0013060000"/> takes precedence</entryReference> <entryReference>mixing gases in general <sref ref="B01F0003020000"/></entryReference> </titlePart> <titlePart> <text>Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser</text> </titlePart> <titlePart> <text>having one or more bowls or cones diverging in the flow direction</text> <entryReference><sref ref="F24F0013072000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>formed as cylindrical or spherical bodies which are rotatable</text> <entryReference><sref ref="F24F0013072000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>formed as perforated walls, ceilings or floors</text> <entryReference><sref ref="F24F0013078000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>of elongated shape, e.g. between ceiling panels</text> </titlePart> <titlePart> <text>having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable</text> <entryReference><sref ref="F24F0013072000"/> takes precedence</entryReference> </titlePart> <titlePart> <text>combined with lighting fixtures</text> <entryReference>air-treatment systems with air-flow over lighting fixtures <sref ref="F24F0003056000"/></entryReference> </titlePart> <titlePart> <text>Air-flow control members, e.g. louvres, grilles, flaps, guide plates</text> <entryReference><sref ref="F24F0007013000"/>, <sref ref="F24F0013060000"/> take precedence</entryReference> <entryReference>roof ventilation <sref ref="F24F0007020000"/></entryReference> </titlePart> <titlePart> <text>movable, e.g. damper</text> <entryReference><sref ref="F24F0013180000"/> takes precedence</entryReference> <entryReference>valves in general <sref ref="F16K"/></entryReference> </titlePart> <titlePart> <text>built-up of sliding members</text> </titlePart> <titlePart> <text>built-up of tilting members, e.g. louvre</text> </titlePart> <titlePart> <text>with parallel simultaneously tiltable lamellae</text> </titlePart> <titlePart> <text>built-up of parallelly-movable plates</text> </titlePart> <titlePart> <text>specially adapted for insertion in flat panels, e.g. in door or window-pane</text> </titlePart> <titlePart> <text>Casings or covers</text> </titlePart> <titlePart> <text>Means for preventing condensation or evacuating condensate</text> </titlePart> <titlePart> <text>Means for preventing or suppressing noise</text> </titlePart> <titlePart> <text>Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect</text> </titlePart> <titlePart> <text>Arrangement or mounting of filters</text> </titlePart> <titlePart> <text>Arrangement or mounting of heat-exchangers</text> </titlePart> <titlePart> <text>Supports for air-conditioning, air-humidification or ventilation units</text> </titlePart>