PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.


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363-131 121-55A 14-.5
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Class Number: 432
 Class Title: HEATING

Subclass  Subclass
Number    Title

  1       PROCESSES OF HEATING OR HEATER OPERATION
  2       .Including apparatus purging, cleaning or accretion preventing
  3       .Including repairing, converting or assembling apparatus
  4       .Including apparatus heat-up, cool-down or protection
  5       .Including preparing or arranging work for heating
  6       ..Stacking or aligning objects
  7       ..Forming a permeable layer or sheet
  8       .Continous strip, strand or web passed longitudinally through
            heating zone
  9       .Treating an article, container, batch or body as a unit
  10      ..Localized treating or shielding of work area
  11      ..Moving unit through or within treating zone during treating
  12      ..Modulating, varying or augmenting heat supply during heat-up
             period
  13      .Including melting, vaporizing, sintering, expanding
            comminuting, or classifying work material
  14      .Including passing, treating or conveying gas into or through
            particulate work
  15      ..Including maintenance of fluidized bed
  16      ..Including a dust control or particle separation step
  17      ..Including modulation of flow rate of gas or treated material
  18      .Subjecting work to diverse treatments or graduated
            temperatures
  19      .Controlling flame position or work atmosphere
  20      ..Providing flame or high luminosity
  21      ..Including recycling work atmosphere
  22      ..Establishing strata, layer or curtain
  23      ..Establishing or maintaining composition of atmosphere bathing
             work
  24      ..Modulating or stabilizing pressure or temperature
  25      ..Providing pulsed or periodically reversed atmosphere
  26      ..By mode of admission of treating or protecting fluid
  27      .Including the flowing or circulating of particulate heat
            carrier
  28      .Of operating a furnace utilizing a heat storage mass
  29      .Of heating a fluid
  30      ..Utilizing a heat storage mass
  31      .Heating of or by wall or radiant surface
  32      WITH INDICATOR, ILLUMINATOR OR INSPECTION MEANS
  33      ARTICLE OR TEMPLATE FOLLOWER POSITIONS HEATING ELEMENT RELATIVE
           TO ARTICLE
  34      HAVING OPERATING OR CONTROLLING DEVICE RESPONDING TO PRESENCE OF
           DISCRETE WORK UNIT OR REMOVABLE UNIT HOLDER
  35      FRANGIBLE OR FUSIBLE SAFETY RELIEF OR SHUTDOWN MEANS
  36      HAVING CONDITION RESPONSIVE CONTROL
  37      .Analyzer or composition sensor of work, work atmosphere or
            exhaust gas
  38      .Control of or response to apparatus protecting fluid or means
  39      .Of selection or load balancing of furnace exhaust heated
            regenerators
  40      .Of hot blast stove (i.e., of Cowper stove)
  41      .Of purger, purge period, scavenger or cleanerr
  42      .Of protective work shield, cooler or atmosphere; or of heat
            applicator position
  43      .Of discharging, or stopping the heating of a unit or batch on
            sensed completion of heating
  44      ..With cool-down timer or means
  45      .Of or by means sensing or controlling work movement, quantity
            or position
  46      .Condition responsive shutdown requiring reset
  47      .Of or by pressure of fluid work or work chamber atmosphere
  48      .Of cooling, dilution, withdrawal, bypass or circulation of work
            chamber atmosphere
  49      .Of or by heat generation or transmission
  50      WITH PROTECTOR, CLEANER OR SUPPORT FOR CONDITION SENSOR
  51      HAVING TIMING, PROGRAMMING OR CYCLING CONTROL MEANS
  52      .Of handling or treatment of discrete work batch or unit
  53      ..And of furnace closure or heating element operator
  54      WITH INTERLOCKED, INTERCONNECTED OR MULTIWAY CONTROLLER
           ALTERNATING FLOW OF HEATED AND HEATING FLUID
  55      WITH CONCURRENT CONTROL OR INTER-CONTROL OF DIVERSE OPERABLE
           ELEMENTS
  56      .Door or baffle movement correlated with work movement or
            placement
  57      .Heating gas supply, removal or recirculation correlated with
            work or door movement or placement
  58      WITH HEATING GAS CONVEYING, AGITATING, SCATTERING OR
           DISINTEGRATION OF WORK (E.G., FLUIDIZED BED, ETC.)
  59      ADVANCING STRUCTURE FLEXING, LOOPING OR COILING SHEET, WEB OR
           STRAND
  60      .Internally heated roll
  61      WITH LUMP BREAKER OR CLASSIFIER FOR PARTICULATE WORK MATERIAL
  62      GEOGRAPHIC OR STRUCTURAL INSTALLATION
  63      .Installed on internal combustion engine element
  64      HAVING FLUID CURTAIN AT CHAMBER PORT OR WORK PATH
  65      WITH HEAT SHIELD, OR ESCAPING GAS COLLECTOR AT FURNACE CHAMBER
           ACCESS AREA
  66      WITH CONDENSER OR ABSORBER FOR WORK CHAMBER VAPOR
  67      WITH MEANS SEPARATING SOLID PARTICLES OR SLAG FROM WORK CHAMBER
           GAS
  68      .Separator discharges gas to work zone
  69      .With means passing separated solid to heating zone
  70      .At regenerator or recuperator (e.g., slag pocket, etc.)
  71      ..With separated solid discharge structure
  72      WITH MEANS DILUTING, PURIFYING OR BURNING EXHAUST GASES
  73      COMBUSTION PRODUCTS, FLUE OR GENERATOR AND WORK CHAMBER MOUNTED
           FOR RELATIVE MOVEMENT FOR ACCESS
  74      WITH DRIP, LEAKAGE, BREAKAGE OR SOIL COLLECTING STRUCTURE
  75      WITH CLEANING MEANS FOR APPARATUS
  76      WITH APPARATUS REPAIR OR ASSEMBLY MEANS
  77      WITH WORK COOLING STRUCTURE
  78      .Combustion feed air cools exiting work by contact
  79      ..Contact at discharge end section of shaft furnace
  80      ..Work manipulated in cooling zone
  81      .Work holder having selectively usable heating and cooling
            structure
  82      .Entering and leaving work exchange heat
  83      .Work heat removed through heat transmitting wall
  84      ..Combustion feed material cools wall
  85      .Cooling liquid contacts workk
  86      WITH MEANS RECEIVING WORK FROM WORK HEATING ZONE DISCHARGE
           MEANS
  87      WITH MEANS SUPPLYING WORK TO WORK FEEDER
  88      WITH WHEEL, HANDLE, OR SKID-TYPE SUPPORT FOR HEATER ASSEMBLY
  89      CONVERTIBLE
  90      BOILER AND WORK HEATING FURNACE, POT OR OVEN
  91      .Having means utilizing generated steam in heating work
  92      COMBINED
  93      HAVING WORK HEATING CHAMBER AND OPEN ACCESS WORK SUPPORTING AND
           HEATING AND HEATING STRUCTURE OUTSIDE OF CHAMBER
  94      DISPARATE HEAT SOURCES OR FUELS
  95      SHAFT TYPE
  96      .Having combustion products generated in or fed to shaft
  97      ..Having flow controller restraining solid and passing melt
  98      ..Having agitator or movably mounted baffle for shaft or shaft
             outlet
  99      ..Having vertically spaced gas supply ports
  100     ..Having distinct fume outlet and work inlet
  101     ..Having distinct combustion products generator chamber
  102     .Having heat emitting tube or flue within or traversing shaft
            chamber
  103     TUMBLER-TYPE ROTARY - DRUM FURNACE
  104     .Having support for engaging heated surface of domestic stove
  105     .Having combustion products generated in or fed to drum
  106     ..Including plural, distinct serially connected work chambers
  107     ..And having externally heated drum surface or indirect heating
             flue
  108     ..Work advancing type (e.g., steady flow of work)
  109     ...Axially spaced feed to drum of combustion or reaction
              material
  110     ...Structure providing different rates of heating or work
              movement along axis
  111     ...Counterflow of work and combustion products
  112     .Externally heated drum or associated heating element heats work
            by conduction or radiation
  113     ..And having distinct atmosphere supply or removal structure
  114     ..Heat emitter is tube within the drum chamber or the drum wall
  115     .Having flexible, cooled, or air curtain seal between rotary and
            stationary parts
  116     .Having protective cooling structure
  117     .Having work or work atmosphere feed or discharge structure
  118     .Having structure agitating or controlling the motion of the
            charge
  119     .Having brick-type lining
  120     WORK CHAMBER HAVING HEATING MEANS
  121     .Having means by which work is progressed or moved mechanically
  122     ..Having manipulating means arranging, orienting, segregating or
             topically heating individual unit
  123     ...Handler outside of chamber supports unit partially within and
              partially outside of furnace chamber
  124     ...Having structure rotating, reorienting, or inverting unit
              during heating
  125     ...Vertical stack or mutually supporting units having thrust
              means
  126     ...Thrust means advances row or stack of units
  127     ....Having structure for removing skid marks
  128     ..Plural distinct chambers
  129     ...Work moved to drop between shelf or trough-type chamberss
  130     ....Combustion products generated in or fed to chamber
  131     .....Annular shelves and rotary pusher on central vertical axis
  132     ....Heated shelf or trough
  133     ...Having combustion products generated in or fed to work
              chamber
  134     ..Vibrating or jarring-type work advancer
  135     ..Traveling heat emitter carries or stirs work
  136     ..Combustion products generated in or fed to chamber
  137     ...Movable chamber floor section carried by external guide or
              axle
  138     ....Rotary section
  139     ...Plough, rake, screw, or stirrer means
  140     ....Moved by endless carrier
  141     ...Rotatably mounted work carrier (e.g., Ferris wheel type,
              etc.)
  142     ....Horizontal shelf on vertical axis
  143     ...Having means forming work path from inlet to outlet
  144     ....Having structure circulating work atmosphere along or across
               path
  145     .....Distinct blowers or blower discharge ports along path
  146     ....Plural burners longitudinal spaced in path
  147     .....Radiant type
  148     ....Baffle, heat radiator, or heating flue in chamber along
               path
  149     ....Combustion material supply ports spaced along path
  150     ....Spaced combustion products exhaust ports
  151     ..Stirrer in externally heated tank
  152     ..Having distinct atmosphere supply, removal or recirculation
             structure
  153     ..Work or work carrier slides on heated chamber wall or floor
  154     ...Screw-type pusher
  155     ..Chamber heated by multiple combustion products flues
  156     .Crucible or pot heating furnace
  157     ..Having tilting arrangement
  158     ..Pot stand forms annular combustion material admission zone
  159     .Combustion products heat work by contact
  160     ..Furnace or work holder of furnace mounted for tilting
             discharge
  161     ..Having separator of flow director for melted work
  162     ..Having shelf, rack, tray or chamber on guide or pivot
  163     ..Plural structurally related work chambers
  164     ...Connected for serial flow of combustion products
  165     ....Having serially connected regenerator
  166     ....Chambers spatially separated
  167     ....Having temporary partition
  168     ....Through perforated floor
  169     ....Through perforated partition
  170     ....Having branch connection to common flue
  171     ...Diverse atmospheres (e.g., directly and indirectly heated,
              etc.)
  172     ...Fed with combustion products from a common generator
  173     ..Having protective cooling means for combustion material feed
             structure
  174     ..Including noncommunicating combustion products flue
  175     ..Radiant-type burner in or on wall (e.g., surface combustion,
             etc.)
  176     ..Having exhaust return passage or recirculating fan or jet
  177     ..Chamber exhaust transfers heat with chamber walll
  178     ..Work chamber or its wall heats chamber feed
  179     ..Work chamber exhaust heats chamber feed
  180     ...By regenerative-type heat exchanger
  181     ....Spaced alternating or successive chamber exhausts feed
               plural regenerators
  182     .....Regenerators heat fuel
  183     ..For annular article (e.g., wheel rim, etc.)
  184     ..Article inserted type
  185     ..Dividing baffle or screen in cabinet forms upper work and
             lower burner chambers
  186     ..Distinct combustion chamber feeds work chamber
  187     ...Having additional feed means diluting combustion products
  188     ...Work chamber indirectly heating by common wall or connecting
              flue
  189     ...Having pump or jet means forcing air into combustion chamber
  190     ...Distinct vertically spaced combustion products feed openings
              to work chamber
  191     ...Plural distinct combustion chambers feed single work chamber
  192     ...Multiple perforate wall, floor or roof for combustion feed or
              exit
  193     ..Spaced exhaust ports from work chamber
  194     ..Baffle, shield, heat absorber, work support or flow directing
             means in work chamber
  195     ..Hearth-type or tank-type furnace
  196     ..Spaced fuel or air feeds to work chamber
  197     .Having particulate or liquid heat transfer medium in work
            chamber
  198     .Means supplying a protective or treating agent other than or
            additional to air
  199     .Having work atmosphere recirculating means
  200     .Work chamber having gaseous material supply or removal
            structure
  201     ..Air flow-through type
  202     ...Having means heating work by radiation or conduction
  203     ...Pump for atmosphere
  204     ...Having a movable drawer or separable tray
  205     ..Having pump, jet or valve means establishing chamber pressure
             distinct from ambient
  206     .Interior bell forms muffle
  207     .Plural structurally related work heating chambers
  208     ..Chambers are movably or removably mounted retorts
  209     .Heating tube, element, or flue traverses work space
  210     .Externally heated, liquid holding type of work container
  211     ..Mounted for pouring discharge
  212     .Tortuous, branched or baffled heating flue means within or
            along chamber wall
  213     ..Having distinct burner units
  214     HEAT GENERATING MEANS HEATS HEAT STORAGE MASS OF SOLID MATERIAL
  215     .Mass is solid fluent heat carrier (e.g., pebbles, etc.)
  216     .Interconnected separately encased masses
  217     .Dividing wall in casing forms combustion and heat storage
            chambers
  218     ..Annular divider forms concentric chambers
  219     HEAT GENERATOR HEATS GAS OR LIQUID MATERIAL IN A FLOW STRUCTURE
  220     .With pump for the material driven by energy from the heat
            generator
  221     .With means utilizing the heated material for heating work
  222     .Material heated by mixing with combustion products off
            generator
  223     ..Having means for indirectly exchanging heat between combustion
             products and material
  224     INSERTED EMITTER TYPE OF HOLLOW ARTICLE INTERIOR HEATER
  225     HEAT APPLICATOR HAVING STRUCTURE FOR MOUNTING IT ON OR AROUND
           OBJECT TO BE HEATED
  226     HAVING MASK, BAFFLE OR CONDUCTOR CONCENTRATING HEAT ON OR
           PROTECTING SECTION OF ARTICLE
  227     HEAT GENERATOR WITH AN ASSOCIATED WORK SUPPORT OR HEAT DELIVERY
           STRUCTURE
  228     .Internally heated roll
  229     .Movably mounted heat emitter traverses work during heating
  230     .Means moving or guiding work relative to heat emitter during
            heating
  231     .Article engaging and retaining support fixes position of
            article relative to heat emitter
  232     .Horizontal, planar, openwork, work support above burner
  233     HEATING APPARATUS ELEMENT HAVING PROTECTIVE COOLING STRUCTURE
  234     .Work skid or rail structure
  235     .Conveyor, chute or work agitator element
  236     ..Roll
  237     .Door, cover, door frame or rim of cover
  238     .Wall, floor or roof element
  239     WORK FEEDING, AGITATING, DISCHARGING OR CONVEYING
           SUBCOMBINATION
  240     .Having support for engaging surface of domestic stove
  241     .Removable furnace bottom section or kiln cart
  242     .Having closure or seal for work feeder's entrance passage
  243     .Outside conveyor track paralleled by chamber wall slot for
            conveyor arm
  244     .Seal at chamber wall for conveyor arm or shaft
  245     .Having distinct heat shield, conductor, director or expansion
            relief structure
  246     .Roll-type conveyor element
  247     HEATING OR HEAT RETAINING WORK CHAMBER STRUCTURE
  248     .Protected, lined or reinforced melt holding section
  249     .Including baffle wall, work shield, or work support element
  250     .Door, cover or port
  251     .Having expansion relieving or absorbing means
  252     .Masonry with metallic casing or support
  253     ACCESSORY MEANS FOR HOLDING, SHIELDING OR SUPPORTING WORK WITHIN
           FURNACE
  254.1   .Fluid tight metallic heat transferring box, shield or
            hood
  254.2   ..Bell-type hood or support for such hood
  258     .Support structure for heat treating ceramics (e.g., saggars,
            etc.)
  259     ..Point or line contact support
  260     .For annular work (e.g., coil separator, etc.)
  261     .Openwork tray, basket, or grid structure for heat treating
            metal
  262     .Crucible
  263     ..Having dispensing opening or spout
  264     ..Lined, layered or coated
  265     ..Of particular material
  266     MISCELLANEOUS
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  *       CROSS-REFERENCE ART COLLECTIONN
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  500     TOBACCO BARNS