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: 19
 Class Title: TEXTILES: FIBER PREPARATION

Subclass  Subclass
Number    Title

  .2      STOPPING
  .21     .Photo responsive
  .22     .With signal
  .23     .Thickness detection
  .24     ..Floating roll
  .25     .Break or run-out detection
  .26     ..Strand winding
  .27     DRYING
  .3      STAPILIZING
  .35     .Tension breaking
  .37     ..With weakening
  .39     ..Multi-stage
  .41     ..With lateral filament deflection
  .43     ..Differential effect
  .46     .With prior treatment
  .48     ..Aligning or separating
  .51     .With stapled fiber overlapping
  .56     .Combined
  .58     .Continuously flowing work
  .6      ..Cutting
  .62     ...Differential speed rotary cutter
  .64     ...Fraying (e.g., abrasive)
  1       LIBERATING
  2       .Animal fibers
  3       ..Silk
  4       ..Feathers
  5 R     .Decorticating
  6       ..With seed or leaf removing
  7       ..With liquid treatment
  8       ...Depulping
  9       ..With air blast
  10      ..Individual stalk opening
  11      ..Traveling clamp feed
  12      ...Transverse
  13      ....Overhead
  14      .....Depulping
  15      ....Depulping
  16      .....Single rotor
  17      ...Depulping
  18      ....Including rotary
  19      ..Apron machines
  20      ...Depulping
  21      ..Combinations with reciprocating brakes
  22      ..Reciprocating brakes
  23      ...Continuous feed
  24      ..Rotary machines
  25      ...Axially movable rotor
  26      ...Single rotor
  27      ....Depulping
  28      ...Depulping
  29      ...Including brakes and combs
  30      ...Brakes and beaterss
  31      ...Brakes
  32      ....Reverse rotation
  33      ...Beaters
  34      ..Depulping
  5 A     ..Systems
  35      .Boll hulling
  36      ..With knocker roll and breaker
  37      ..With knocker roll
  38      ..With breaker
  39      .Ginning
  40      ..Delinting
  41      ...Delinters
  42      ....Separate delinting and doffing chambers
  43      .....Roller and bar
  44      ....Rotor in shell
  45      .....Vertical
  46      ......Skeleton rotor
  47      .....Skeleton rotor
  48 R    ..Gins
  49      ...Rolling squeeze
  50      ...Roller and bar
  51      ....Laterally movable detacher
  52      ....Vibratory detacher
  53      ....Rotary detacher
  54      ...Rollers
  55 R    ...Saw
  56      ....With boll hullers
  57      ....Multiple cylinders
  58      ....Doffing and moting
  59      .....Pneumatic doffing
  60      .....Brushes
  61      ....Seed boards
  62 R    ....Ribs
  62 A    .....Rotary rib
  63      ....Saws
  64      ....Saw cleaners
  55 A    ....Gin breast lift
  55 B    ....Float roll
  48 A    ...Disc type
  64.5    ..Feeding
  65 R    WORKING
  66 R    .Fluid or special treatment
  66.1    ..Crimping or curling
  66.2    ...Opposed intermeshing traveling surfaces
  200     ..Cleaning
  201     ...By detergent
  202     ...Including condensing or saw action
  203     ....And doffing
  204     ...And feeding
  205     ....Pneumatic
  66 CC   ..Cotton conditioning
  66 T    ..Tow
  80 R    .Picking
  81      ..Nonrotary
  82      ..Disintegrators
  83      ...Gripping
  84      ..Bur removers, gripping feed
  85      ..Beaterss
  86      ...Gripping feed
  87      ....Multiple rotor
  88      .....With condenser
  89      ....With condenser
  90      ...Longitudinal feed
  91      ....Multiple rotor
  92      ...Intermittent feed
  93      ...Multiple rotor
  94      ...Rotors
  95      ...Screens
  96      ..Gripping feed
  97      ..Rotors
  97.5    ..Feeding
  80 A    ..Separator
  98      .Carding
  99      ..Card types
  100     ...Roller worker and stripper
  101     ....Multiple-roller worker unit
  102     ...Traveling flat
  103     ....Bends
  104     ...Stationary flat
  105     ..Feeding
  106 R   ..Doffing
  106 A   ...Doffer comb
  107     ..Waste recovering
  108     ..Stripping
  109     ...Pneumatic
  110     ...Flat
  111     ....Traveling
  112     ..Cylinders
  113     ..Flats
  114     ..Card clothing
  115 R   .Combing
  215     ..Tuft combing
  216     ...Tuft translating type
  217     ....Rotary
  218     ...Waste clearing
  219     ...With auxiliary pressing
  220     ...Nonrotary combing
  221     ....Stationary when combing
  223     .....Moving to combed position in timed relation to nipper or
                detaching motion
  224     .....Adjusting
  225     ...With oscillating or reciprocating nipper
  226     ....Plural pairs - alternating
  227     ....Resilient closing or opening
  228     ....Adjusting
  229     ...Detaching (i.e., segment)
  230     ....Belt
  231     ....Roll
  232     .....Oscillating or reciprocating
  233     ...Rotary comb cylinder
  234     ....Half lap
  235     ...Nipper
  122     ..Circle
  123     ...Exterior and interior
  124 R   ...Dabbing mechanism
  124 B   ....Brushh
  125     ..Overhead traveling clamp
  126     ..Apron and cylinder
  127     ..Apron
  128     ..Cylinder
  129 R   ..Screw gill bar
  129 A   ...Gill bar cleaners
  115 A   ..Draw-off rolls
  115 B   ..Waste collector
  236     .Drafting
  237     ..Producing longitudinal variations
  238     ...By variation of fiber input rate
  239     ..With material sensing
  240     ...And speed changing
  241     ....By belt shifting
  242     ..With fiber stretching
  243     ..With doubling
  244     ..Apron type
  245     ...With clearing
  246     ...With condensing
  247     ...With fiber orienting
  248     ...Pressing or holding fibers against belt
  249     ...With auxiliary apron support
  250     ...Tensioning
  251     ....By roll
  252     ...With apron guide
  253     ....Including specific cross-guide structure
  254     ....Cradles
  255     .....For plural aprons
  256     ...With adjustments
  257     ..With cooperating trough
  258     ..Roll type
  259     ...Including slip roll
  260     ...Including changing roll speed or location
  261     ....Roll-spacing adjusting
  262     ...With clearing
  263     ....Pneumatic
  264     ....Underclearing
  265     ....Top roll
  266     ...Pressure-applying devices
  267     ....With releasing means
  268     .....Responsive to roll relationship
  269     .....Gravity pressure means
  270     ....Signal
  271     ....Uniform pressure applying to all rolls or plural pairs from
               a single source
  272     ....Magnetic, hydraulic, or pneumatic
  273     ....Applied through stirrup and saddle
  274     .....Including fulcrumed lever linking stirrup and pressure
                means
  275     ......Gravity pressure applying means
  276     .......With means to vary or permit variation of pressure effect
                  on fulcrumed lever arm
  277     .....Spring pressure applying means
  278     ....Applied through saddle
  279     .....Spring pressure applying means
  280     ......With pressure-adjusting means
  281     ....Spring pressure applying means
  282     .....With means to adjust pressuree
  283     ....Gravity pressure applying means
  284     ....Saddle, per se
  285     .....Lubricating or antifriction means
  286     ...Roll condensing
  287     ...Reciprocating transverse guide, condenser, or roll
  288     ...With fiber guide, condenser, or brake
  289     ....Including marginal folding
  290     ....Presser
  291     ....Open type
  292     ....Adjustable
  293     ...Gear or friction driving
  294     ...Roll stands
  295     ....Top roll
  65 A    .Systems
  65 T    .Tow
  65 CR   .Crush rolls
  144     ASSEMBLING
  145     .Different materials
  145.3   ..Fiber to stick or rod
  145.5   ..Blending
  145.7   ...By carding
  148     .Article, screen-condensing
  149     .Article, winding
  150     .Silver forming
  151     ..Fleece dividers
  152     ..Rub rolls
  153     ..Rub aprons
  296     .Web forming
  297     ..With fiber sampling
  298     ..With split lap preventing
  299     ..Including continuous filaments
  300     ..Control means responsive to sensed condition or program
  301     ..Irregular, nonuniform, or patterned receiving surface
  302     ..Stratified or multilayer
  303     ..With divided fiber stream or separate handling of trash or
             fugitive fiber
  304     ..Fluid propelled to condenser
  305     ...With fiber liberation
  306     ....Gripping feed to fiber separator
  307     .....Rotary condenser
  308     ...Rotary condenser
  157     .Formed silvers
  159 R   ..Coiling
  159 A   ...Can changing
  160     ..Zigzag
  161.1   .Formed web
  163     ..Zigzag