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: 406
 Class Title: CONVEYORS: FLUID CURRENT

Subclass  Subclass
Number    Title

  1       SELECTIVE DELIVERY
  2       .Destination controlled by operator at remote site
  3       .Destination controlled by sensed condition
  4       ..Controlled by coded load
  5       ...Magnetic material on load
  6       ...Electrical contact on load
  7       ...Adjustable or changeable code on load
  8       ...Presence or size of recess or protrusion on front of load
  9       ....Protrusion
  10      WITH MEANS TO CONTROL CONVEYING FLUID OR MOVEMENT OF LOAD IN
           RESPONSE TO SENSED CONDITION
  11      .Responsive to obstacle in system
  12      .Control of conveying fluid
  13      ..Reversing of fluid current in single tube system
  14      ..Responsive to velocity or pressure change in conveying fluid
  15      ...To initiate or terminate fluid current
  16      ....In response to introduction or discharge of load
  17      .....Discharge and introduction
  18      .....With timer to terminate fluid current
  19      ..Responsive to presence or absence or quantity of load
  20      ...With stepped reset for each load article introduced at
              intake
  21      ...With load detector at outlet to terminate fluid current
  22      ...With timer to terminate current
  23      ...Level or weight of load in receptacle
  24      ....At intake
  25      .....And control of load input to receptacle
  26      ..Responsive to movement of gate to initiate or terminate fluid
             current
  27      ...To closure of intake gate to initiate fluid current
  28      .Control of load input or output
  29      ..Input
  30      ...Responsive to pressure or velocity change of conveying fluid
  31      ...Responsive to presence, absence, or quantity of load
  32      ....Level or weight of load in receptacle
  33      .....In receptacle at discharge
  34      WITH SIGNAL, INDICATOR, OR INSPECTION MEANS
  35      .Audible
  36      .With load motion observing means
  37      .Coded carrier
  38      AMBULANT OR PORTABLE
  39      .Vehicle mounted
  40      ..Plural vehicles
  41      ..Towed vehicle
  42      ..Power takeoff
  43      ..With storage means on vehicle for fluid conveyor components
  44      ..With auxiliary supporting means
  45      WITH MEANS TO PREVENT PIPELINE SLUMPING
  46      WITH ADJUNCTIVE SUBSTANCE ADDED
  47      .Liquid
  48      ..Water
  49      .Solidd
  50      SLUG CONVEYING
  51      WITH DIVERSE POWER-DRIVEN CONVEYOR
  52      .Rotary
  53      ..Screw
  54      ...With material recirculating screw
  55      ...Including means to fluidize material
  56      ...Feeding to fluid conveyor inlet
  57      ....Feeds to inlet of blower or pump
  58      .....Screw axis coaxial with axis of rotary blower or pump
  59      .....Plural screws
  60      ....With check valve between screw and fluid current conveyor
  61      ....Fluid jet at conveyor inlet
  62      ..Successively registering pockets
  63      ...Input to fluid conveyor
  64      ....With venting of pockets
  65      ....Having radial blades
  66      .....Rotatable about vertical axis
  67      .....Fluid flow discharges pockets
  68      ....Peripheral pockets formed on rotating member
  69      ..Brush
  70      ..Roller
  71      ..Thrower
  72      .Magazine
  73      .Reciprocating or oscillating
  74      ..With pocket
  75      ..Vibrating
  76      ..Pusher
  77      .Endless
  78      ..Permeable belt
  79      ..At inlet to fluid conveyor
  80      ...Feeds to intake of blower or pump
  81      ...Pushers, buckets, or tines
  82      ..At outlet to fluid conveyor
  83      WITH LOAD BRAKING OR RETARDING MEANS
  84      .Utilizing a fluid
  85      PULSING FLUID CURRENT
  86      HAVING MEANS FOR MAINTAINING LOAD IN SUSPENSION ALONG FLOW PATH
  87      .With load orienting means
  88      .By load supporting jets
  89      .Including permeable member
  90      ..In receptacle
  91      ...Permeable member surrounding discharge opening or conduit
  92      .By fluid whirling action
  93      HAVING MEANS TO INTRODUCE BOOSTER FLUID INTO CONVEYOR
  94      .Plural booster inputs
  95      ..With parallel fluid supply conduit
  96      BLOWER OR PUMP HAVING LOAD INTAKE OPENING IN HOUSING
  97      .Including load or blower protecting means
  98      .Having separate opening in housing for conveying fluid input
  99      .Rotary
  100     ..Having radially extending blades
  101     ...Mounted on axial face of a disc
  102     ...With load receptacle feeding to intake of blower or pump
  103     ....Blower or pump housing movably mounted relative to
               receptacle
  104     ....Plural blowers or pumps
  105     HAVING LOAD BY-PASS AROUND BLOWER OR PUMP
  106     ENDLESS FLUID CURRENT PATHH
  107     MATERIAL-BACKFLOW DISCHARGE
  108     INTAKE TO FLUID CURRENT CONVEYOR
  109     .Combined intake and discharge
  110     ..With terminal
  111     ...Captive carrier
  112     ...Single inlet-outlet
  113     .Movable inlet
  114     ..Follows load level
  115     ..Reciprocating or swinging
  116     ...Having telescoping intake
  117     .Conveyor having plural intakes
  118     ..From receptacle
  119     ...Having plural compartments
  120     ...Plural receptacles
  121     .With sifter
  122     .Load receptacle type
  123     ..Having inlets to separate conveyors
  124     ..Plural receptacles in series
  125     ...With gate valve between receptacles
  126     ...With conical plug valve between receptacles
  127     ..With valve between receptacle and fluid conveyor
  128     ...Reciprocating, rotating, or swinging
  129     ....Rotatable hollow cylinder type
  130     ....Gate type
  131     .....Pivotable
  132     ....Vertically movable
  133     .....Sleeve or conduit
  134     ..With means to agitate load in receptacle
  135     ...Rotary
  136     ...Fluid
  137     ....Jet
  138     ....Passed through permeable member
  139     ..Blower or pump carried by receptacle
  140     ...Plural blowers or pumps
  141     ..Inlet conduit extending downwardly inside receptacle
  142     ...With conduit supplying lifting fluid to interior of
              receptacle
  143     ....Fluid supplying conduit extends to inlet conduit
  144     ..Conveying fluid velocity altered at load input
  145     ..Having connection for external suction or pressure source
  146     ..Conveying fluid introduced under pressure to interior of
             receptacle
  147     .Terminal type
  148     ..Intake gate
  149     ...With gate lock
  150     ...Serially arranged gates
  151     .Upstream of suction source
  152     ..Including specific intake nozzle structure
  153     ..Suction induced by pressure stream
  154     FLUID CURRENT CONVEYOR OUTLET MEANS
  155     .Conveyor having plural outlets
  156     ..Feeding plural receptacles
  157     .Deflector
  158     ..Telescoping
  159     ..Pivoted
  160     ...Adjustable
  161     ....From remote location
  162     ..Rotatablee
  163     ..Carried by receptacle
  164     .Movable outlet
  165     ..Horizontally swinging
  166     ...And vertically swinging
  167     ..Telescoping
  168     .With material separating receptacle
  169     ..Having air lock
  170     ..Having plural inputs
  171     ..Having filter
  172     ...And means to clean filter
  173     ..Cyclone separator
  174     ..Conveyor outlet conduit extending upwardly inside receptacle
  175     ..And upstream pressure source
  176     .Having terminal
  177     ..With gate and means to open gate prior to article or carrier
             arrival
  178     ...Serially arranged gates
  179     ..Upward delivery
  180     ..Discharge gate
  181     LOAD FLOW DIVERTER, DIVIDER, OR COMBINER
  182     .Movable conduit section
  183     .Movable valve in conduit
  184     CARRIER
  185     .Wheeled
  186     .Having side opening
  187     .Having end opening
  188     ..With closure for end opening
  189     ...Removable
  190     .With conduit engaging seal or bumper structure
  191     CONDUIT
  192     .With fluid valve or load spacer
  193     .With wear protection means
  194     .Having fluid nozzle
  195     .Having changing cross section
  196     .Flexible
  197     PROCESSES
  198     MISCELLANEOUS