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.


Enter a class/subclass code here to get a list of patent titles. Use any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any subclass letters capitalized. Currently Design Patent titles (those in the classes of the form Dxx.yy) are not retreivable.

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Class Number: 225
 Class Title: SEVERING BY TEARING OR BREAKING

Subclass  Subclass
Number    Title

  1       METHODS
  2       .With preliminary weakening
  3       .Longitudinally of direction of feed
  4       .Transversely of continuously fed work
  5       ..Progressively to or from one side edge
  6       SEVERING BY MANUALLY FORCING AGAINST FIXED EDGE
  7       .With other type severing means
  8       .With timer-released means for preventing work feed-out
  9       .Including means to effect bias cut
  10      .With feed-out of predetermined length from work supply
  11      ..Including means to select or adjust feed-out length
  12      ..Including feed-out stop for manually pulled work
  13      ...Stop abuts work edge or work-mounted article
  14      ...With feed-out of lead-end to aid initial grasping
  15      ..Merely to provide lead-end for manual grasping
  16      ..Manually operated feed-out mechanism
  17      .With indicator
  18      ..Indicates length to be severed from supply
  19      .With blade-edge guard
  20      ..Movable
  21      .Work stripped from blade by relatively movable means
  22      ..Including movable blade
  23      .With means to move work toward or into severing position
  24      ..With means to strip adhering work therefrom
  25      .With work-immobilizing paster surface
  26      ..With finger-access opening
  27      .With means to hold pad or stack of individual sheets
  28      ..With means to separate severed end of stub from supply
             package
  29      ..With changeable blade-edge contour
  30      ...Slidable notcher
  31      ..Blade slidable along plane of work surface
  32      .Zigzag-folded supply package
  33      .Separate blades usable alternatively or sequentially on same
            work supply
  34      .Plural supply sources
  35      ..On turret-type support with single blade
  36      ..With movable blade registrable selectively with each source
  37      ..With plural blades
  38      ...With individual blade for each source
  39      .With housing for work supply
  40      ..Liquid-, gas-, or light-tight work passage
  41      ..With inspection window or transparent panel
  42      ..With mounting means for housing
  43      ..Blade on pivoted closure for housing
  44      ..Sectional telescoping housing
  45      ...Including removable cap or sleeve enclosure for spooled work
              supply
  46      ..Including special support for wound supply package
  47      ...Bearing or trunnions to engage package core
  48      ..Single blank container
  49      ...Blade unitary with containerr
  50      ...With closure fastener
  51      ..With brake or tensioner
  52      ...Restricted or restrictable work outlet
  53      ..With finger-access opening to facilitate work feed-out
  54      ..With internal guide
  55      .Blade carrier bodily and slidably supported on running length
            work
  56      .Blade mounted on hand-held wound package
  57      ..With lead-end stripper for tacky adhesive work
  58      ..By resiliently embracing outer circumference of package
  59      ..Work supply nonrotatably wound on flanged spool
  60      ...Circumferentially movable blade radially retained by beaded
              or grooved flanges
  61      ...Blade carrier supports hollow spool for rotation
  62      ...Flange edge notched to provide or coact with cutter
  63      ...With clamp for lead-end of strand-type work
  64      ....Strand clamped against flange
  65      ..By resiliently engaging package ends or interior of core
  66      ..Blade carrier supports package for rotation
  67      .Movable blade continually biased toward wound web supply
            package
  68      ..Including temporary bias-disabling means
  69      ..Including stripper to separate lead-end from package
  70      ..Weight of bodily movable package contributes to blade-biasing
             force
  71      ..Blade slidably guided
  72      .Blade movable to severing position by moving work
  73      ..With simultaneous application of brake or clamp
  74      ...Applied to running length work
  75      ....Opposed movable jaws
  76      .Wound package bodily biased toward fixed blade
  77      .With fixed blade and support for wound package
  78      ..Body- or belt-attached
  79      ..With brake applied to supply package
  80      ..With guide spaced from blade edge to provide lead-end
             therebetween
  81      .With work-abutment stop
  82      .With brake or clamp
  83      ..Thread cutter and clamp attachment for sewing machine presser
             foot
  84      ..Applied to running length work
  85      ...Spaced from blade edge to provide lead-end therebetween
  86      ....Blade manually movable to expose lead-end
  87      ..Manually applied, spring returned
  88      .With guide for running length work
  89      .Blade manually movable to or from severing position
  90      .With means to facilitate lead-end grasping
  91      .Blades or severing devices
  92      ..Adjustable blade-edge contour
  93      BREAKING OR TEARING APPARATUS
  93.5    .Including means to apply thermal shock to work
  94      .Combined with preliminary weakener or with nonbreaking cutter
  95      ..Successively actuated sharp and dull tools
  96      ..Preliminary weakener
  96.5    ...With means to apply moment of force to weakened work
  97      .Plural breakers
  98      .Conveyer diverter for moving work
  99      ..Plural divergent work pathss
  100     .Work-parting pullers (bursters)
  101     ..Relatively movable clamps
  102     .Axial twisters
  103     .Movable breaking tool
  104     ..Breaking tool intermediate spaced work supports
  105     ...Clamping supports
  106     .Web restrainer