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: 188
 Class Title: BRAKES

Subclass  Subclass
Number    Title

  1.11    WITH CONDITION INDICATOR
  1.12    TO RETARD ROLLING OF CASTER
  2 R     VEHICLE
  3 R     .Train
  3 H     ..Fluid pressure vehicle
  4 R     .Wheel and ground
  4 B     ..Rotary brake member
  5       .Ground-engaging
  6       ..Sprag
  7       ..Anchors
  8       ..Sled
  9       .Wagon
  10      ..Four-wheel
  11      ..Divided beam
  12      ..Running gear support
  13      ...Divided beam
  14      ..Hayrack type
  15      ..Retreating shoe
  16      .Independent wheel
  17      .Hub or disk
  18 R    ..Motor vehicle
  18 A    ...Disc brakes
  19      .Cart
  20      .Children's carriages
  21      .Truck
  22      ..Two-wheel
  23      ...Ground-engaging
  24.11   .Velocipede (e.g., bicycle, etc.)
  24.12   ..Including mechanism for opposed gripping of wheel rim or
             tire
  24.13   ...Wheel rim configured to cooperate with components
  24.14   ...Having means to increase braking force (e.g.,
              self-energizing brake, etc.)
  24.15   ....Variable leverage actuator
  24.16   ....Plural brakes having common actuator
  24.17   ...Actuation controlled by back-pedalling
  24.18   ...With means to lock brake in actuated position
  24.19   ...Having means to adjust spacing between brake component
              and wheel rim or tire
  24.21   ...Having center-pull, cable-type actuator for mechanism
  24.22   ...Specific actuator element structure
  25      ..Roller
  26      ..Hub or disk
  27      ..Pivoted wheel
  28      .Clasp
  29      .Top shoes
  30      .One-way
  31      .Positive lock
  32      .On ground
  33      .Railway
  34      ..Train
  35      ..Wheel and raill
  36      ...Chock
  37      ....Roller shoe
  38      ..Track
  38.5    ...Plural abutments selectively engageable by
              vehicle-carried means, e.g., car spotter
  39      ...Rotary shoe
  40      ...Slot
  41      ..Rail
  42      ...Carrier type
  43      ...Grippers
  44      ....Automatic
  45      ....Wheel clamps
  46      ..Equalizing series
  47      ..Connected trucks
  48      ..Maximum traction type
  49      ..Four wheel opposing
  50      ...Open center
  51      ...Divided beam
  52      ..Four wheel spreading
  53      ...Divided beam
  54      ....Locomotive type
  55      ....Mine car type
  56      ..Clasp
  57      ..Top shoes
  58      ..Disk on axle
  59      ...Side shoes
  60      ..Positive lock
  61      ..One-way
  62      ..On track
  63      ...Catchers
  2 A     .Braking torque regulators
  2 D     .Bowdin wire-operated
  2 F     .Wheelchair brakes
  64      WHEEL AND STRAND
  65.1    STRAND
  65.2    .With attaching means
  65.3    .Plural brakes
  65.4    .Tortuous grip
  65.5    ..Adjustable
  67      ROD
  *       WHEEL
  68      .Frictional and positive
  69      .Positive lock
  70 R    .Axially and transversely movable
  70 B    ..Self-energizing
  71.1    .Axially movable brake element or housing therefor
  71.2    ..With clutch between load and brake assemblage
  71.3    ..Antipodal, relatively separable brake elements
  71.4    ...Annular elements
  71.5    ..Plural rotating elements (e.g., "multidisc")
  71.6    ..With means for cooling brake
  71.7    ..With means to adjust for wear of brake
  71.8    ...Self-adjusting means
  71.9    ....Including unidirectionally rotating screw
  72.1    ..With means for actuating brake element
  72.2    ...Self-force-increasing means
  72.3    ...And means for retracting brake element
  72.4    ...By fluid pressure pistonn
  72.5    ....Piston for each of plural elements
  72.6    ....And/or mechanical linkage
  72.7    ...By inclined surface (e.g., wedge, cam or screw)
  72.8    ....Screw or helical cam
  72.9    ...By pivoted lever
  73.1    ..Structure of brake element
  73.2    ...Circumferential or circumferentially spaced
  73.31   ..Retainer for brake element
  73.32   ...Having means to facilitate changing brake element
  73.33   ....By manipulation of brake actuator
  73.34   .....Pivotable actuator
  73.35   ...Having actuator and means to prevent vibration thereof
  73.36   ....Including means to prevent vibration of brake element
  73.37   ...Having means to prevent vibration of brake element
  73.38   ....Spring
  73.39   ...Including torque member supporting brake element
  73.41   ...Including actuator pivotable in plane parallel to axis
              of rotation of wheel
  73.42   ....And slidable in that plane
  73.43   ...Including actuator slidable in plane parallel to axis of
              rotation of wheel
  73.44   ....On axially extending pin
  73.45   .....Plural pins
  73.46   ...Including actuator fixed on torque member
  73.47   ...Having closed loop type housing
  74      .Transversely movable
  75      ..Opposing
  76      ...Rim grip
  77 R    ..Strap
  77 W    ...Wrap band type
  78      ..Expanding
  79      ...Multiple sets
  323     ...Three shoes
  324     ....Rotary cam operatively abutting shoe ends
  325     ...Two shoes
  326     ....Operators at both ends of each shoe
  327     ....Anchors adjacent unoperated ends
  328     .....Common anchor pivot or abutment
  329     ......Rotary cam abutting shoe ends
  330     .....Rotary cam abutting shoe ends
  331     ....Adjacent ends operatively connected and not anchored to
               support
  332     .....Rotary cam abutting shoe ends
  333     .....One end anchored
  334     ....Anchors at alternate ends
  335     ...Radially guided shoe
  336     ...Continuous split band
  337     ....Anchored intermediate ends
  338     .....Rotary cam operatively abutting band ends
  339     ....Rotary cam operatively abutting band ends
  340     ...Lateral guide for shoe
  341     ...Anchor
  342     ...Self-energizing
  343     ...Wedge operator
  79.51   ..Having wear take up or compensating structure
  79.52   ...Temperature responsive
  79.53   ...Feeler actuated
  79.54   ...Actuated in conjunction with other braking elementt
  79.55   ...Actuated by brake operating lever
  79.56   ...Having separate adjustment actuator mechanism
  79.57   ...Manually operated
  79.58   ....Brake operator length adjusted
  79.59   ....Mounted between shoe and a support member
  79.61   .....Causes direct, simultaneous adjustment of plural
                shoes
  79.62   ...Located on or in an operator
  79.63   ...Mounted between shoe and a support member
  79.64   ....Between plural supporting shoes
  80      .Rotary shoes
  82.1    .One-way brakes
  82.2    ..Reversible
  82.3    ..With disabler
  82.34   ...Integral with engager
  82.4    ..With hold out
  82.5    ..Combined or plural diverse types
  82.6    ..Biased flexible band
  82.7    ..Pivoting or flexing detent (e.g., pawl)
  82.74   ...Axially moving
  82.77   ...On rotating member
  82.8    ..Dragged wedging member
  82.84   ...Rolling
  82.9    ..Axially moving
  83      .Continuous
  84      .Fixed brake
  85      .Intermittent
  371     PLASTIC DEFORMATION OR BREAKAGE OF RETARDER ELEMENT (E.G.,
           IMPACT ABSORBER)
  372     .And subsequent reverse deformation
  373     .Element twisted
  374     .Element extruded through or around tool
  375     .Element severed by cutting tool
  376     .Frangible element
  377     .Crushable element
  378     INERTIA OF DAMPING MASS DISSIPATES MOTION (E.G., VIBRATION
           DAMPER)
  379     .Resiliently supported damping mass
  380     ..Supported by mechanical spring
  266     INTERNAL-RESISTANCE MOTION RETARDER
  267     .Using magnetic flux
  268     .Using yieldable or fluent solid or semisolid
  269     .Using diverse fluids
  270     .Operating against ambient atmosphere
  271     .Combined with surface-friction brake
  272     .Combined with mechanism retarded by brake
  273     ..Restricting exhaust from engine
  274     .With heat exchanger
  275     .With valved regulator responsive to inertia of valve member
  276     .With means compensating for change in temperature of viscosity
  277     ..Including thermostatic valve responsive to temperature
  278     ...Manually adjustable valve
  279     .Resistance responsive to changing condition
  280     ..Relative speed of thrust member or fluid flow
  281     ..Relative direction of thrust member
  282     ...By valved orifice in thrust member
  283     ..Position of load-linked valve
  284     ..Position of thrust member relative to chamberr
  285     ...With means for adjusting responsiveness
  286     ...Having orifice in chamber wall
  287     ....Plural, successively encountered orifices
  288     ...Having varying area of chamber passageway for thrust member
  289     ...Having varying area of metering rod extending through orifice
              in thrust member
  290     .Including unidirectionally rotating load member
  291     ..With clutch between load and brake assemblage
  292     ..Cooperating with peripherally mating jointly rotating member
  293     ..Driving relatively moving element which causes flow of brake
             fluid
  294     ...With means for regulating movement of element
  295     ...Comprising rectilinearly reciprocating piston
  296     ..Driving radial vanes which cause toroidal flow of brake fluid
  297     .Including thrust member and variable volume chamber
  298     ..Forming flexible wall enclosure for fluid
  299     ..With control means remote from chamber
  300     ..With means for locking parts together temporarily
  301     ..Causing air suction in chamber
  302     ..Rectilinear reciprocation of piston caused by arcuately
             oscillating load member
  303     ...Pistons reciprocating oppositely in nonaligned cylinders
  304     ...Load member located between dual pistons
  305     ...Piston reciprocating along axis of oscillation
  306     ..Arcuately oscillating thrust member
  307     ...Resilient or radially urged vane
  308     ...Causing fluid flow through hub of thrust
  309     ....With manually adjusted valve in hub
  310     ...With means for manually adjusting fluid flow
  311     ..Thrust member reciprocating in enclosed chamber
  312     ...Having piston rod extending through ends of chamber
  313     ...Causing fluid flow between compartments of chamber
  314     ....With reservoir for fluid
  315     .....Annular reservoir
  316     ....Through or around piston within chamber
  317     .....Through orifice in piston
  318     ......And passage external to chamber
  319     ......With manually regulated valve for orifice
  320     ......Tortuous path orifice
  321.11  ..Including means connecting thrust member to load
  322.11  ..Specific retarder component structure
  322.12  ...Including protective shield for retarder
  322.13  ...Including valve
  322.14  ....Foot valve
  322.15  ....Piston valve
  322.16  ...Including seal or guide
  322.17  ....Between piston rod and cylinder
  322.18  ....Between piston and cylinder
  322.19  ...Cylinder structure
  322.21  ....Having means for filling or recharging
  322.22  ...Thrust member structure
  322.5   .Using viscosity of fluid medium
  381     FRICTIONAL VIBRATION DAMPER
  *       OPERATORS
  105     .Multiple
  106 R   ..Vehicle
  107     ...Railway
  106 F   ...Fluid and mechanicall
  106 A   ...Inside wheel
  106 P   ...Plural systems
  108     .Vehicle step
  109     .Seat
  110     .Automatic
         ..Vehicle
  111     ...Trips
  112 R   ...Train
  112 A   ....Anti-sway control
  113     ...Four-wheel
  114     ...Hub
         ...Auxiliary mechanism on tongue
  115     ....Rear wheel
  116     .....Divided beam
  117     ....Front wheel
  118     .....Divided beam
         ...Movable tongue
  119     ....Rising and falling
  120     ....Rear wheel
  121     .....Divided beam
  122     ....Front wheel
  123     .....Divided beam
         ...Railway
  124     ....Train
  125     .....Drawbar
  126     ......Speed-responsive
  127     ....Strain release
  128     ...Sled
  129     ...Rise and fall
  130     ....Rotary
  131     ...Turning
  132     ...Horse pull
  134     ..Differential movement
  135     ..Momentum
  136     ...Wedging shoe
  137     ...Electric control
  138     ....Vehicle
  139     ...Gravity control
  140 R   ...Vehicle
  141     ....Fluid-pressure control
  142     ....Draft control
  143     ....Wheel and ground
  144     ....Railway
  145     .....Winding
  146     ......Axle
  147     .....Train
  148     ......Push rod
  149     ......Drawbar
  150     .......Speed-responsive
  140 A   ....Servo brake
  151 R   .Fluid pressure
  152     ..Road vehicle
  344     ...Velocipede
  345     ...With multiple master cylinders
  346     ...With friction drag response
  347     ...With hydraulic quick-slack-take-up pulsator
  348     ...With power quick-slack-take-up
  349     ...With front rear brake apportionerr
  350     ...With steering gear control
  351     ...With hydraulic automatic slack adjuster
  352     ...With bleeding or filling device
  353     ...With hydraulic lock
  354     ...With independent wheel control
  355     ...With nonmanual fluid-power source
  356     ....Vacuum power
  357     .....And manual
  358     ....Liquid power
  359     .....And manual
  360     ....And manual
  361     ...Wheel brake operating assembly
  362     ....With transversely movable internal brake
  363     .....Motor between shoe ends
  364     ......Dual opposed piston motor
  365     ....Radially acting motor
  366     ....Arcuate or annular motor
  367     .....Axially acting
  368     ....Axially acting motor
  369     ....With axially movable brake member
  370     .....Spot type
  153 R   ..Rail vehicle
  153 D   ...Diaphragm
  153 A   ...Rim grip type
  154     ..Exhaust of propelling motor
  151 A   ..Safety devices
  155     .Fluid current
  156     .Electric and mechanical
  157     ..Electric motor on staff
  158     .Electric
  159     ..Dynamic
  160     ...Additional current
  161     ..Electromagnet
  162     ...Rotary motor
  163     ...Solenoid
  164     ...Magnetic circuit
  165     ....Rail-engaging
  166     .Spring
  167     ..Vehicle
  168     ...Draft release
  169     ....Wagon
  170     ..Fluid-pressure release
  171     ..Electric release
  173     ...Vehicle
  174     .Weight
  175     ..Draft control
  176     ..Vehicle body
  177     ...Inclined
  178     ...Longitudinally movable
  179     ..Float
         .Speed-responsive
  180     ..Regulators
  181 R   ...Vehicle
  181 A   ....Acceleration responsive
  181 C   ....Comparative
  181 T   ....Torque-responsive
  182     ...Fluid and electric control
  184     ...Transversely expandingg
  185     ....Radial
  186     ...Transversely contracting
  187     ...Axially moving
  188     ...Strand-engaging
  189     ..Stops
  *       POSITION ADJUSTERS
  190     .Vehicle body movement
  191     ..Radius rod
  192     ..Turning
  193     ...Railway
  194     ...Pivoted wheel
  195     .Load
  196 R   .Slack
  197     ..Railway car
  198     ...Automatic
  199     ....Friction clutch
  200     ....Ratchet bar
  201     ....Shims
  202     ....Screw
  203     .....Fluid-operated
  196 A   ..Fluid
  196 C   ..Combined
  196 F   ..Torsional spring
  196 M   ..Manual
  196 P   ..Friction
  196 B   ..Ratchet
  196 BA  ...Rotatable
  196 D   ..Frictional rotation
  196 V   ..Screw, shim or cam
  204 R   .Equalizers
  204 A   ..For strap brakes
  205 R   .Supports
  206 R   ..Brake element
  207     ...Beam
  208     ....Road vehicle
  209     ....Brackets
  210     ....Safety
  211     ....Locks
  212     ....Parallel motion
  213     .....Multiple-point support
  214     ....Wear compensation
  215     .....Brake shoes
  206 A   ...Anchor
  205 A   ..Antirattler
  216     .Release mechanism
  217     .Brake-thrust distributors
  *       ELEMENTS
  218 R   .Brake wheels
  218 XL  ..Disk type
  218 A   ..Dust guard
  219.1   .Beams or beam assemblies
  219.6   ..With movable, reversible or adjustable heads
  220.1   ...Pivoted head
  220.6   ....Lockingly adjustable
  221.1   .....Yieldably readjustable
  222.1   ..With fixed head or thrust block
  222.6   ...Integral head and beam
  223.1   ...Trussed beamm
  223.6   ....Head or block held by tension element
  224.1   .....Tension adjusted by terminal nut
  225.6   ..Trussed beam
  226.1   ...Integral tension and compression member
  228.1   ...Tubular compression member
  228.6   ...H, I, L, T, U, V, or X cross section compression member
  229.1   ...With strut-type fulcrum
  229.6   ....Reversible
  231     ..With fulcrum
  232     ...Reversible
  233     ...Spaced
  233.3   ..With guides and/or guards
  233.7   ..H, I, L, T, U, V, or X cross section beam
  234     .Shoe fasteners
  235     ..Locomotive type
  236     ..Heads
  237     ..Combined wheel guards
  238     ..Multiple shoes
  239     ...Superposed
  240     ...Linear arrangement
  241     ....Frangible connection
  242     ..Interlocking heads and shoes
  243     ...Longitudinal key
  244     ...Longitudinal insertion
  245     ...Side insertion
  246     ...Clamps
  247     ..Shoe-back lugs
  248     ...Cast in
  249     ..Flexible shoes
  250 R   .Shoes
  251 R   ..Composite
  252     ...Flanged
  253     ....Recessed
  254     ...Shells
  255     ...Cast metal matrix
  256     ....Nonmetallic inserts
  257     ....Faces
  258     ....Backs
  259     ...Flexible
  251 A   ...Materials
  251 M   ...Metallic surfaces
  260     ..Chills
  261     ..Recessed
  262     ..Rotary
  250 A   ..Transversely expandable
  250 H   ..One-piece
  250 C   ..Multiple web
  250 D   ..Web and flange connections
  250 E   ..Slotted shoes and vibration dampers
  250 F   ..Anchor and operator fittings
  250 G   ..Surfaces and fasteners
  250 B   ..Shoe construction
  264 R   .Cooling and lubricating
  264 A   ..Air-cooled, axially engaging
  264 AA  ...Auto wheel type
  264 B   ..Lubrication
  264 D   ..Liquid cool
  264 E   ..Wet friction surface and internal resistancee
  264 F   ..Operating fluid cooling
  264 CC  ..Contained coolant
  264 G   ..Insulators
  264 P   ..With pump
  264 W   ..External wheel covers
  265     .Locks
  382     MISCELLANEOUS