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: 34 Class Title: DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS Subclass Subclass Number Title 1 R MATERIAL SUBJECTED TO ELECTROMAGNETIC ENERGY 1 A .Electric current applied directly through material 1 B .Induction heater 1 C .Magnetic field 1 D .Controls particle movement in fluidized bed 1 E .Electrostatic field 1 F .With suction means 1 G .With vibration means 1 H .Having needle-like electrodes 1 J .With heating or cooling means 1 K .Radio or high-frequency energy 1 L .With additional heating means 1 M .With pressure reducing means 1 N .Plural units or chambers 1 P .Microwave energy 1 Q .Clothes dryer 1 DD ..With rotating drum 1 S .With vibrating means 1 T .With pressure reducing means 1 U .Plural units or chambers 1 V .With treating gas or vapor circulation 1 W .Infrared energy 1 X .With treating gas or vapor circulation 1 Y .Ultraviolet energy 1 Z .With inert gas 1 AA .Having shutter means 1 BB .With cooling 1 CC .Material treated by acoustic energy 2 R FEATHER TREATING 2 A .With agitator * PROCESSES 3 .Hair on head 4 .With selected radiant energy 5 .With freezing, congealing or thickening 6 .Sheet or web contact preventing by spacer sheets, webs or strands 7 .Retarding treating action by shielding 8 .With centrifugal force 9 .With contacting of material treated with liquids or solids 9.5 ..Wood treated 10 .With fluid current conveying or suspension of treated material 11 .With treated material recirculation 12 .With operation on treated material other than drying 13 ..With cooling 13.4 ...Wood treated 13.8 ..Wood treated 14 .With mechanical liquid removal 15 .With vacuum and/or gas or vapor pressure varying or control and/or fluid sealing 16 ..Sheets, webs or strands 16.5 ..Wood treated 17 .Diverse types of drying operationss 18 ..Sheets, webs or strands 19 .Combined 20 .Cooling by gas or vapor contact 21 .Hollow articles and/or forms 22 .Gas or vapor contact with material treated 23 ..Sheets, webs or strands 24 ...With spacing, rolling or coiling 25 ..Material speed, thickness or quantity control 26 ..Temperature control or varying and treatment of gas or vapor 27 ...Vapor removal from gas 28 ...With treated material motion 29 ...Gas or vapor flow directing or control 30 ..Temperature control or varying 31 ...With treated material motion 32 ..Treatment of gas or vapor 33 ..With treated material motion 34 ..Gas or vapor flow directing or control 35 ..Heat conserving 36 ..Special gas or vapor 37 ...Vapors 38 ..Piling or arranging material treated 39 .Radiant or conducted heating 40 ..With evolved gas or vapor treatment 41 ..Sheets, webs or strands 42 .Miscellaneous * APPARATUS 43 .With automatic control 44 ..Of plural operations 45 ...Of operation sequence 46 ...Of heater, contacting gas humidity and/or gas mixing 47 ..Of gas mixing 48 ..Of heater 49 ...By web or strand tension or breaking 50 ..Of contacting gas humidity 51 ..Of gas or vapor pressure in treating enclosure 52 ..Of rate of treated material motion 53 ..Of time period 54 ..Of flow of gas or vapor treating fluid 55 ..Of starting and/or stopping 56 ..Of treated material feeding and/or discharging 57 R .With fluid current conveying of treated material 57 A ..Vertical gas projection 57 B ..Lateral air blast 57 C ..Inclined grate 57 D ..Mechanical rotating element 57 E ..Rotary gas current 58 .With apparatus using centrifugal force 59 ..Rotary scattering member 60 .For diverse operations on treated material 61 ..With two or more nondrying means 62 ..With treated material cooling means 63 ...Internal rotary drum drier 64 ...Gravity flow-type drier 65 ....With integral cooling chamber or section 66 ...Cooler chamber integral with or similar to drier 67 ...Atmospheric 68 ..Diverse heater types and/or gas or vapor contact types only 69 ..Diverse types of liquid removers onlyy 70 ...With expressing or wringing 71 ...With means to remove liquid from treated material by contact with solids 72 .With means to treat gas or vapor 73 ..By vapor condensation 74 ...With other gas or vapor treatment 75 ...Direct contact with cooling substance 76 ...With force circulation 77 ....Recirculation of treating gas or vapor 78 ...Recirculation of treating gas or vapor 79 ..Separation of substances from treating or exhaust gases or vapors 80 ...By absorbent 81 ....In or forming walls, ceiling or floor 82 ...By filter 83 ..Jet devices 84 ...Gas or vapor circulators or flow promotors 85 .With apparatus cleaner and/or escaping material collector 86 .With waste gas heat and/or power conservers 87 .With means to interlock operable elements 88 .With display, inspecting or illuminating means 89 .With indicating or testing means 89.1 .Blotting means combined with means for purpose other than drying 89.2 ..With ruler 90 .Combined 91 .Convertible 92 .Vacuum 93 .Solar 94 .Sheet or web contact preventing by spacer sheets, webs or strands 95 .Means to remove liquid from treated material by contact with solids 95.1 ..Having manipulative means 95.2 ...Attachable to hand (e.g., finger) 95.3 ...For rolling contact 95.4 ...For rocking contact 96 .For hair on head 97 ..With gas or vapor flow for contact 98 ...Plural distributors 99 ...Head conforming distributor 100 ....Recirculation of treating gas or vapor 101 ...With hair supports 102 .Treated material recirculating means 103 .Forms 104 .For hollow article 105 ..With conveying or handling means 106 ..With suspension means and bottom retainer 107 .For slender rigid articles 108 .Rotary drums or receptacles 109 ..Compartmented or pocketed 110 ..External 111 ...With belt or felt drier 112 ...With hopper feed or article securing means 113 ...Plural 114 ....Gas or vapor circulation for contact with treated material 115 .....Through material or introduction through drum 116 ....With belts or feltss 117 .....With threading, stripping or guiding devices 118 .....Tightener 119 ....Heat exchange fluid supply and/or removal 120 ....Threading, stripping, or guiding devices 121 ....Mounting and/or driving means 122 ...Gas or vapor circulation for contact with treated material 123 ...With belts or felts 124 ...Heat exchange fluid supply and/or removal 125 ....Removal only 126 ..With additional translating means 127 ..Plural 128 ...One within another (e.g., nested) 129 ...With feed from one to another 130 ..With gas or vapor flow for contact with treated material 131 ...Recirculation of treating gas or vapor 132 ...With heating means 133 R ....With drum or receptacle enclosing housing 133 A .....Combined washer-dryer 133 B .....With material conditioner dispenser 133 C .....With heat retaining means 133 D .....With material tumbling assisting means 133 E .....With stationary trays in rotatable drum 133 F .....With supporting, driving, sealing or bearing means for drum 133 G .....With specific drum structure 133 H .....With specific housing structure 133 J .....With gas or vapor circulating means 133 K .....With suction means 133 L .....With gas or vapor flow regulating means 133 M .....With conduit to deliver gas or vapor to drum 133 N .....With vertical gas or vapor flow 133 P .....With axial gas or vapor flow 133 Q .....With radial gas or vapor flow 134 ....Heat exchange and/or gas or vapor conducting conduits in drum or receptacle 135 ...Axial treated material feed type 136 ....Concurrent gas or vapor flow only 137 ....Counter-current gas or vapor flow only 138 ...Gas or vapor conducting conduits in drum or receptacle 139 ...With drum or receptacle enclosing housing 140 ..Vapor exhaust 141 ...Axial treated material feed type 142 ..Axial treated material feed type 143 .Stationary press type 144 ..Plural press units 145 ..Gas or vapor circulation for contact with treated material 146 ..Nonplanar press couples 147 .Spiral treated material path type 148 .Sheet, web or strand 149 ..Sheet elevator type 150 ..Sheet on edge 151 ..For flexible sheets, webs or strands 152 ...Running lengths 153 ....Winding reels 154 ....Plural webs or strands 155 ....With gas or vapor circulation for contact with treated material 156 .....Fluid current supports or guidee 157 .....Suspended loops 158 .....With edge holding means 159 .....With zigzag runs of treated material 160 .....Elongated thin gas or vapor stream 161 ....With zigzag runs of treated material 162 ...Endless conveyers or movable grippers 163 ...Movable treated material holders 164 .Treated material vibrating type 165 .Gravity flow type 166 ..Trough or tube, with axially rotary conveyer or agitator 167 ..Plural gravity path, plural feed and/or discharge 168 ..With gas or vapor flow for contact with treated material 169 ...Recirculation of treating gas or vapor 170 ...Inverted imperforate ducts 171 ...Shelf-to-shelf or zigzag treated material flow 172 ....Dumping shelves or pockets 173 ....Rotary stirrer or shelf 174 ...Foraminous distributors or walls 175 ..With venting means or wall 176 ..With treated material tubes 177 ..With heating tubes 178 ..Shelf-to-shelf or zigzag treated material flow 179 .Stationary receptacle or tube with agitator or conveyer 180 ..Plural units 181 ..With gas or vapor flow for contact with treated material 182 ...Axial treated material feed type 183 ..Axial treated material feed type 184 .Rotary or swinging carrier or rack 185 ..With agitating means or discharging scrapers 186 ..Plural rotary or swinging units 187 ..With gas or vapor circulation for contact with treated material 188 ...Air scoops and/or suspended treated material supports 189 .Elevator type 190 ..Plural 191 .Reversible or pulsating treating gas or vapor flow 192 .Removable shelf or tray type 193 ..Plural nonvertically aligned 194 ..With shelf or tray handling means 195 ..With gas or vapor circulation for contact with treated material 196 ...Recirculation of treating gas or vapor 197 ...With heater 198 ....With liquid heater or vaporizer 199 ...Zigzag treating gas or vapor flow 200 ..With liquid heater or vaporizer 201 .Houses, kilns and containers 202 ..Article inserted type 203 ..With conveyers providing plural or zigzag treated material paths 204 ...Separable truck or tray 205 ...Plural independent paths for treated material 206 ...Pusher type 207 ...Plural run endless conveyer 208 ...Single run endless, both courses carrying treated material 209 ..Plural treating units or compartments 210 ...With gas or vapor circulation for contact with treated materiall 211 ....Superposed floors or chambers 212 ....Recirculation of treating gas or vapor 213 .....Parallel circulation only 214 ....Parallel circulation only 215 ....With heater 216 .....With conveyer and/or movable treated material support 217 ....With conveyer and/or movable treated material support 218 ..With gas or vapor circulation for contact with treated material 219 ...Recirculation of treating gas or vapor 220 ....Caused by heater action only 221 ....Caused by jet action 222 ....Movable gas or vapor distributor 223 ....Plural gas or vapor forcing means 224 ....Plural gas or vapor inlets and/or outlets 225 .....In wall, ceiling or floor 226 ...Tortuous gas or vapor path 227 ...Gas or vapor flow toward or from treated material entrance or exit 228 ....Counter-current to treated material motion only 229 ...Movable gas or vapor distributor 230 ...Plural gas or vapor forcing means 231 ...Deflecting baffle in treating chamber 232 ...Plural gas or vapor inlets and/or outlets 233 ....In wall, ceiling or floor 234 ...Caused by heater only 235 ..With venting means 236 .Treated material handling or conveying 237 .Trays or floors 238 ..Single or plural trays only 239 .Supports 240 ..Rods or rolls 241 .Gas or vapor distributing and applying agitators 242 .Chamber seals 243 R .Miscellaneous 243 C ..Car driers * ****************************** * DIGEST * ****************************** DIG 1 Absorbents and adsorbents