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
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Class Number: 104
 Class Title: RAILWAYS

Subclass  Subclass
Number    Title

  2       TRACK LAYERS
  3       .Built-up sections
  4       .Portable shifter
  5       .Distributers
  6       ..Transverse tie placer
  7.1     .Track raising car
  7.2     ..With means to transversely shift track (i.e., aligning)
  7.3     ..Under-track ballast sled or plow
  8       .Sluer
  9       .Tie replacer
  10      .Tamper
  11      ..Pneumatic injector
  12      ..Car mounted
  13      ..Hand tools
  14      ...Pneumatic
  15      .Joint welders
  16      .Tie platers
  17.1    .Track rail mounted spike driver
  17.2    .Trail rail mounted rail anchor applicator
  18      MOVING TRAIN
  19      .Safety lander
  20      .Passenger transfer
  21      ..Revolving terminal
  22      BALLOON
  23.1    FLUID SUPPORTED CAR OR SIMULATED AERIAL VEHICLE
  23.2    .Car supported by fluid current pushing against surface
  24      SAILING DEVICES
  25      ENDLESS TRAIN
  26.1    CAR YARD
  26.2    .Track brake
  27      TERMINALS AND STATIONS
  28      .Passenger
  29      .Freight
  30      .Platforms
  31      ..Shifting
  32.1    TRUCK CHANGER
  33      .Wheel-gauge changers
  34      VEHICLE BATTERY REPLACER
  35      TURNTABLES
  36      .Actuators
  37      ..Fluid pressure
  38      ..Electric control
  39      ..Traction cable
  40      ..Vehicle operated
  41      ...Drive wheel
  42      ...Gravity
  43      ..Traction wheel
  44      .Automobile
  45      .Portable
  46      .Bearings and pivots
  47      .Locks
  48      TRANSFER TABLESS
  49      .Swinging
  50      .Operating mechanism
  51      LOCOMOTIVE SHED FIXTURES
  52      .Smoke jacks
  53      AMUSEMENT
  54      .Gap jumpers
  55      .Loop
  56      .Helical
  57      ..Rotating
  58      .Moving-wave track
  59      .Drifting tub
  60      .Racing
  61      .Horse simulation
  62      .Physical training
  63      .Tortuous alinement
  64      ..Horizontal zigzag
  65      ...Exchanging gears
  66      ...Chain drive
  67      .Switchback
  68      .Bowl, cylinder or globe
  69      .Chutes
  70      ..Water dive
  71      .Submarines
  72      .Splasher
  73      .Canals
  74      .Rotary car on truck
  75      ..Vertical axis
  76      ..Horizontal axis
  77      .Car in wheel
  78      ..Traveling
  79      .Seesaw track
  80      .Seesaw car drive
  81      .Swing car drive
  82      .Passenger jumper
  83      .Illusion vehicles
  84      .Optical illusion
  85      .Physical illusion
  86      .Hydraulic effects
  87      CABLE AND RIGID COMBINED
  88      SELECTIVE DELIVERY
  89      SUSPENDED
  90      .Ferry
  91      .Track systems
  92      .Swing boom track
  93      .Single-rail type
  94      .Double inner rail
  95      .Double outer rail
  96      TROLLEY TRANSFER
  97      .Beef-jack type
  98      .Overhead crane
  99      .Turntable type
  100     .Horizontal end pivot
  101     .Longitudinal pivot
  102     .Sliding shift
  103     .Swing stub
  104     .Split point
  105     .Rigid frog
  106     TROLLEY RAILSS
  107     .Two tread
  108     ..Slotted tube
  109     ..Integral
  110     .Single tread
  111     .Hangers
  112     CABLE RAILS
  113     .Gravity
  114     .Extensible marine
  115     .Hangers and saddles
  116     ..Vertible movement
  117     .Tension regulators and anchors
  117.1   .With automatic stopping or reversing
  118     MONORAIL
  119     .With side guides
  120     .Raised center rail
  121     .Single top guide
  122     DROP PICK UP
  123     WAY SUSPENSION
  124     ELEVATED STRUCTURE
  125     POSTS AND TOWERS
  126     PORTABLE ELEVATED
  127     ELEVATORS
  128     .Car
  129     .Track control
  130     SWITCHES
  130.1   .For magnetically suspended vehicle
  131     .Vertical
  132     .Rack rail
  133     DROPPINGS CATCHER
  134     SLEDWAYS
  135     .Roller track
  136     .Ice track
  137     TRAVELING TRACK
  138.1   TUBULAR WAY
  138.2   .Internal service device
  139     TRUCK IN CONDUIT
  140     SLOTTED CONDUIT
  141     .Crossings
  142     .Yokes
  143     ..Concrete
  144     ..Integral metallic
  145     .Grip or plow traps
  146     .Adjustable slots
  281     MAGNETICALLY SUSPENDED CAR
  282     .Propulsion means employed to suspend car
  283     .By permanent magnets only
  284     .Including means to sense or control car position or attitude
            with respect to guideway
  285     .With cooling means
  286     .Construction or composition of suspension elements
  287     CAR-CARRIED PROPULSION SYSTEM
  288     .Electric
  289     ..With regenerative energy means
  290     ..Linear motor
  291     ...Suspension between truck and vehicle body
  292     ...Propulsion by active guideway, e.g., linear synchronous
              motor, etc.
  293     ...Including means to control gapp
  294     ...Construction or composition of motor elements
  295     ..External car control
  296     ...Auxiliary function on car
  297     ....Superimposed signal on same conductor
  298     ...By block system
  299     ...Of spacing between cars
  300     ...Car-carried speed regulator
  301     ...Of multiple trains on same track
  302     ...Reversing of car movement or conductor current
  303     ....By switch responsive to discrete means along guideway
  304     ...Of steerable car
  305     ...Of slot-guided car
  154     .Hydraulic
  155     .Pneumatic
  156     ..Piston tube
  157     ..Motor charging
  158     ...Moving car
  159     ....Longitudinal supply tube
  160     .....Sliding-sleeve receiver
  161     ..Sealing slot closers
  164     TILTING TRACK
  165     TRACTION
  162     .Pusher
  163     ..Rotary
  166     .Longitudinal rotary shafts
  167     .Helical
  168     .Transverse live roll
  169     .Reciprocating farm tool
  170     .Truck distribution
  171     ..Two-wheel type
  172.1   .Chain
  172.2   ..Tow pin or mast
  172.3   ..Beneath vehicle
  172.4   ..Suspended
  172.5   ..Chain construction
  173.1   .Cable
  173.2   ..Ski tow
  174     ..Counterbalanced system
  175     ...Weight
  176     ..Mule car
  177     ..Mail
  178     ..Drive and control
  179     ...Signals
  180     ..Running and carrying cable
  181     ...Mail
  182     ..Clearing-way hangers
  183     ..Drum-wind draft
  184     ..At switches
  185     ..Crossing conduit
  186     ...Cable depressors
  187     ...Auxiliary car propulsion
  188     ..At swing bridges
  189     ..Curves
  190     ...Auxiliary car propulsion
  191     ...Horizontal pulley
  192     ...Double-rope system
  193     ..Draft-cable coupling
  194     ..Slot closerss
  195     ..Slot switches
  196     ..Take-ups
  197     ..Supporting pulley
  198     ..Cable shifters
  199     ..Cable lifters
  200     ..Cable clips
  201     ...Strand engaging
  202     ..Grippers
  203     ...Pneumatically operated
  204     ...Automatic grip control
  205     ....Trip lever
  206     .....Toggle-operated jaw
  207     ....Releasable pawl
  208     ....Weight-operated jaw
  209     ....Spring-pressed jaw
  210     ....Screw operated
  211     ....Cam operated
  212     ....Wedge operated
  213     ...Longitudinal buffer
  214     ...Laterally movable jaws
  215     ....With guide rollers
  216     ...Pivoted and fixed jaws
  217     ...Forceps
  218     ...Vertically movable jaws
  219     ....Pawl lever and link
  220     ....With guide rollers
  221     .....Pawl lever and link
  222     ...Wedge
  223     ...Screw
  224     ...Cam
  225     ...V-clips or hooks
  226     ...Friction belt
  227     ...Overstepping
  228     ....Revolving
  229     ...Rollers
  230     ....Power transmitting
  231     ....Laterally movable
  232     ....Vertically movable
  233     .....Opposing twin
  234     .....Staggered
  235     ...Whelp wheel
  236     ...Sprocket wheel
  237     ...Sprocket belt
  238     ...Drive stops on car
  239     ...Cable-driving stops
  240     ..Cable construction
  241     SEAT-GUARD CONTROL
  242     DERAILMENT GUARDS
  243     .Supplemental car wheels and rails
  244     .Inclined wheels
  244.1   .Furrow feelers
  245     .Guide rollers
  246     ..Rail interlock
  247     ..Horizontal thrust only
  248     .Rail-interlocking lugs
  249     CAR STOPS
  250     .Special track
  251     ..Car retainingg
  252     .Releasable feed
  253     ..Alternate
  254     .Bumpers
  255     ..Counterweight
  256     ..Fluid pressure
  257     .Displaceable chock
  258     .Rail-clamp chocks
  259     .Sliding
  260     .Wheel skid
  261     CAR-ATTACHED DERAILER
  262     CAR REPLACER
  263     .Car attached
  264     .Special track
  265     .Two-way
  266     ..With rollers
  267     ..Double
  268     .One way
  269     ..Symmetrical
  270     ..Saddles
  271     ..Pivoted ramp
  272     .Articulated extension
  273     .Shifting jack
  274     .Rail clamps
  275     HOSE BRIDGES
  276     .Overhead
  277     .Under rail
  279     TRACK CLEARERS
  280     .Conduit
  306     WITH RUNNING GEAR
  307     MISCELLANEOUS
  *       ******************************
  *       DIGEST
  *       ******************************
  DIG 1   Toy railroad