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: 184
 Class Title: LUBRICATION

Subclass  Subclass
Number    Title

  1.5     AUTOMOBILE CRANK AND GEAR CASE SERVICE
  2       MINE-CAR LUBRICATION
  3.1     RAIL OR RAIL VEHICLE WHEEL LUBRICATOR
  3.2     .On vehicle
  4       WINDMILL LUBRICATION
  5       SLIDE-BEARING LUBRICATION
  5.1     BEARING PACKER
  6       SYSTEMS
  6.1     .With means to control machine operation
  6.2     .With machine tilt compensating means
  6.3     .With machine starting means
  6.4     .With safety or indicating means
  6.5     .Crank-type machines
  6.6     ..Radially extending cylinders
  6.7     ..Inverted cylinder
  6.8     ..Cylinder lubrication
  6.9     ..With valve lubrication
  6.11    .Gas turbine
  6.12    .Gearing
  6.13    .Dry sump
  6.14    .Machine tools
  6.15    .Sewing machines
  6.16    .Rotary compressor
  6.17    .Cylinders parallel to shaft
  6.18    .Vertical shaft
  6.19    .Linkage mechanisms
  6.21    .With lubricant treatment means
  6.22    ..Temperature or viscosity
  6.23    ..Foam or air
  6.24    ..Purification means
  6.25    ...Magnetic
  6.26    .With mist or fog means
  6.27    .With guard
  6.28    .Pump or pump systems mounting means
  7.1     .For twister ring or spinning spindle
  7.2     .For chassis lubrication
  7.3     ..With flow regulator
  7.4     .With measuring or metering value system
  8       ..Continuous tube
  9       ..Sliding tube
  10      ..Wipers
  11.1    .Splash
  11.2    ..With conduit
  11.3    ..For transmission band
  11.4    ..With connecting rod clippers or scoops
  11.5    ..For endless band or chain feed
  12      CONVEYORS
  13.1    SPLASH
  14      LUBRICATORS
  14.1    .Spring
  15.1    .Belt, cable, chain or conveyor
  15.2    ..With injectorr
  15.3    ..With intermittent spray or drip
  16      ..Swab-applied
  17      ..Roller-applied
  18      .Cylinder lubricators
  19      ..Swab-applied
  20      ..Rotary swab-applied
  21      .Elevator-guide lubricators
  22      ..Swab
  23      ..Rotary brush or roller
  24      .Piston-rod lubricators
  25      ..Swab
         .Force feed
  26      ..Pumps
  27.1    ...Mechanically operated
  27.2    ....Multiple pumps
  27.3    ....Pump with sight feed
  27.4    ....Oscillating cylinder
  28      ...Hand-operated
  29      ...Fluid-operated
  30      ...Pendulum-operated
  31      ...Rotary
  32      ...Oscillating piston
  33      ...Rotary piston and valve
  34      ...Oscillating distributing valve
  35      ...Rotary distributing valve
  36      ...Attachments
         ..Followers
  37      ...Mechanically operated
  38.1    ...Hand-operated
  38.2    ....Follower rod threaded to receptacle
  38.3    ....Follower threaded to receptacle
  38.4    ....Follower threaded to rod
  39      ...Fluid-operated
  39.1    ....Cyclical-type metered injector
  40      ....Fluid return
  41      ....Spring-assisted
  42      ....Spring return
  43      ...Centrifugal
  44      ...Pendulum-operated
  45.1    ...Spring-operated
  45.2    ....Spiral spring
  46      ...Weight-operated
  47      ...Balance piston
  48.1    ...Locking devices
  48.2    ....Friction type
         ..Fluid-operated
  49      ...Condensation displacement
  50.1    ....Double passage
  50.2    .....Atomizer
  51      ....Single passage
  52      ....Choke plugs
  53      ....Auxiliary feeding receptacles
  54      ...Displacement by liquid
  55.1    ...Displacement by air or steam
  55.2    ....Air line lubricators
  57      ....Initial pressure
  58      ....Suction
  59      .....Ventedd
  60      ...Abrasion
  61      ..Conveyors
  62      ...Bucket
  63      ....Rotary
  64      ..Capillary attraction
  65      .Gravity feed
  66      ..Automatic cutoff
  67      ...Electrically operated
  68      ...Thermostats
  69      ...Vibrators
  70      ...Centrifugal
         ...Rotatable valve
  71      ....Mechanically operated
  72      ....Fluid pressure-operated
  73      ....Pendulum-operated
         ...Vertically reciprocating valve
  74      ....Mechanically operated
  75      .....Spring-retained
  76      ....Fluid pressure-operated
  77      ....Centrifugally operated
  78      ....Pendulum-operated
  79      ...Horizontally reciprocating valve
  80      ..Combined closure and valve
  81      ..Multiple feed
  82      ..Vertically movable valve
  83      ..Measuring valve
  84      ..Airtight receptacle
  85      ..Siphons
  86      ..Locking valve
  87      ..Fiber valve
  88.1    .Oil cup closure
  88.2    ..Flexible cover
  89      ..Depressible cap
  90      ..Hinged cover
  91      ...Spring-controlled
  92      ..Rotatable cover
  93      ...Spring-controlled
  94      ..Slidable cover
  95      ...Spring-controlled
  96      .Sight feeds
  97      ..Attachments
  98      .Liquefiers
  99      ..Solid stick
  100     .Slide-bearing lubricators
  101     .Roller
  102     .Swab
  103.1   .Constant level
  103.2   ..Float-controlled
  104.1   .Lubricant heating and/or cooling device
  104.2   ..For internal-combustion engine
  104.3   ...Lubricant cooling device
  105.1   .Refilling device
  105.2   ..Grease gun
  105.3   .Nipple or fitting
  106     .Drip pans
  107     FUSIBLE SAFETY MEANS FOR LUBRICATION DEVICE
  108     SAFETY ALARM OR INDICATING MEANS
  109     MISCELLANEOUSS