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: 212
 Class Title: TRAVERSING HOISTS

Subclass  Subclass
Number    Title

  146     HAVING MEANS TO PREVENT OR DAMPEN LOAD OSCILLATIONS
  147     .Antisway
  148     ..By triangulation of cables on movable boom
  149     HAVING MEANS TO SENSE A RANDOMLY OCCURRING CONDITION TO CONTROL
           STOPPING OR DISABLING MEANS
  150     .And means to calculate moment produced by load
  151     .Responsive to boom overtravel or proximity to powerline
  152     .Hoisting stops upon load being elevated to a predetermined
            position
  153     HAVING RANDOM CONDITION SENSOR TO REGULATE INDICATOR, ALARM, OR
           CONTROLLER
  154     .Senses crane tilt
  155     .And means to calculate moment produced by load
  156     .Sensor regulates counterweight or counterbalancing means
  157     HAVING MECHANICAL INDICATOR
  158     .Weight indicator
  159     HAVING MEANS TO ACTIVATE OR REGULATE MOTOR
  160     .Remote control or dual control positions
  161     .Cyclic operation
  162     .Manual fluid valve actuator
  163     ..And plural fluid motors
  164     ...Controlled by common actuator
  165     .In control cab
  166     CLOSURE REMOVER
  167     WITH HAUL-IN LINE
  168     WITH MEANS TO PROJECT LOAD ENGAGER BEYOND END OF BOOM
  169     GROUND WHEEL OPERATED
  170     HAVING CLUTCH OR VARIABLE SPEED TRANSMISSION
  171     .Traveling bridge
  172     .Power takeoff
  173     .Variable speed transmission
  174     .Including means to selectively couple plural hoist functions to
            common power shaft
  175     HAVING MEANS FACILITATING ASSEMBLY OR DISASSEMBLY
  176     .Of sectional vertical support for boom
  177     .Of boom sections
  178     .Of counterweight from hoist
  179     .Of traversing hoist from support
  180     ..Vehicle support
  181     ...And having motor to swing boom
  182     ADJUSTABLE TO TRANSPORT OR NONUSE POSITION (E.G., COLLAPSIBLE
  183     .Crane boom supported by foldable or collapsible tower
  184     ..Extensible tower of relatively sliding sections
  185     ..Hydraulically actuated or sectionally hinged tower
  186     .Collapsible inverted "V" frame supports boom rigging
  187     .Collapsible or foldable boom
  188     ..Vertically swinging boom having pivoted sections
  189     .Ground-engaging stabilizing means (e.g., outrigger)
  190     FLOATING OR SHIP MOUNTED
  191     .Including counterweight or means to compensate for list, trim
            or skew of vessel
  192     .Having horizontally and vertically swinging boomm
  193     ..Cable actuated horizontally and vertically
  194     ...Plural booms
  195     HAVING COUNTERWEIGHT OR COUNTERBALANCING MEANS
  196     .Counterweight movable relative to load support
  197     ..Along rectilinear path
  198     ...On wheeled carriage
  199     HAVING BOOM SHIFTABLE VERTICALLY ALONG A LINEAR PATH
  200     .Movable along nonvertical rectilinear path
  201     .Length of hoisting cable between boom and load decreases
            automatically as boom is raised
  202     .Vertically spaced fastening means along boom support
  203     .Fluid actuated
  204     .By mounting on vertically extensible support
  205     TRAVELING BRIDGE
  206     .Having operator support
  207     .Flexible
  208     .Having vertically adjustable track
  209     .Supporting second traveling bridge
  210     .Having plural trolleys
  211     .Having vertically or horizontally swinging boom on bridge or
            trolley
  212     .Having horizontally swingable track- or load-rotating means on
            trolley
  213     .Having load engager mounted for guided vertical movement
            beneath trolley
  214     .Motor fixed to bridge-supporting structure
  215     .Trolley-mounted motor having cable shift
  216     .Bridge-mounted motor
  217     ..Hoist motor
  218     .Having vertical supporting legs (e.g., gantry)
  219     ..Overhanging end
  220     ..Having specific engager for load
  221     .Having specific engager for load
  222     HAVING SNUBBER OR BOOM BACKSWING STOP
  223     HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE
  224     .Boom mounted for guided horizontal translation (e.g., trolley
            mounted)
  225     .Having trolley thereon
  226     ..Having vertical support remote from pivot (i.e., swinging
             bridge)
  227     ..And vertically swinging
  228     ..And means acting independently of hoist mechanism to shift
             trolley
  229     .And boom position lock
  230     .Extensible by movement of boom or boom segment along
            longitudinal axis thereof
  231     ..And vertically swinging
  232     .And vertically swinging
  233     ..Plural booms
  234     ..With adjacent load-supporting rack
  235     ..Including means for sluing boom as it is swung vertically
  236     ..Including plural actuating means converging toward boom tip to
             effect both horizontal and vertical swinging
  237     ..Including means to swing boom vertically
  238     ...Fluid actuated ram
  239     ...Flexible cable
  240     ....Having passage for luffing cable through boom supporting
               memberr
  241     ....Human or animal powered
  242     ..Having specific engager for load
  243     ...Grab
  244     ..Ambulant or portable
  245     .And means to swing boom horizontally
  246     ..Including flexible member driving gear or pulley having axis
             collinear with boom pivot
  247     ..Gear drive
  248     ...Including rack or worm
  249     ..Human or animal powered
  250     .Having fluid ram directly actuating load cable or sheave
            therefor
  251     .Having specific engager for load
  252     .Having passage for hoist cable through boom supporting member
  253     .Having specific bearing structure
  254     .Ambulant or portable
  255     HAVING VERTICALLY SWINGING BOOM
  256     .And compensating means to maintain horizontal movement of load
  257     .And trolley
  258     .Protruding laterally from vehicle
  259     .Having specific engager for load
  260     .Having means to swing boom vertically
  261     ..Fluid actuated ram
  262     ..Flexible cable
  263     ...Human or animal powered
  264     .Extensible by movement of boom or boom segment along
            longitudinal axis thereof
  265     .Ambulant or portable
  71      LINEAR
  72      .Cable, ship coaling type
  73      .Shiftable track
  74      ..Longitudinally movable
  75      ..Tilting
  76      .Cable
  77      ..Load-handling
  78      ...Draft-rope
  79      ....Dumping
  80      .....Double tackle
  81      .....Grab
  82      .....Sling
  83      ...Load suspension
  84      ....Grab
  85      ....Sling
  86      ..Automatic stop
  87      ..Draft-rope, hoist-rope traverse
  88      ...Divided hoist-rope
  89      ...Hook-lowering
  90      ...Running track
  91      ...Cable return
  92      ...Gravity return
  93      ....Cable
  94      ..Draft-rope, independent traverse
  95      ...Anchored hoist-rope
  96      ...Hook-lowering
  97      ..Load suspension
  98      ...Hoist, carry and lower
  99      ...Running rope
  100     ...Sheave catchh
  101     ....Pivoted cable extension
  102     ...Sheave-frame catch
  103     ....Sliding
  104     ....Pivoted
  105     .....Double
  106     ...Rope catch
  107     ....Sliding
  108     ....Pivoted
  109     .....Double
  110     ...Rope grip
  111     ....Variable elevation
  112     .....Carriage release
  113     .....Side draft
  114     ....Coacting sheave
  115     ...Ratchet sheave
  116     ...Trips, stops and knockers
  117     ..Rope carriers
  118     ...Cable stop-operated
  119     ...Trolley-supported
  120     ...Carrier sheave-operated
  121     ...Permanently spaced
  122     ..Carriage holders, track clamp
  123     ..Pulley changers
  124     .Self-propelled
  125     ..Load-handling
  126     ...Electric
  127     ....Grab
  128     ....Guide bar
  129     .....Grab
  130     .....Ladle
  131     ..Electric
  132     ...Automatic stop
  133     .Hanging cable traverse
  134     .Nonmotor traverse
  135     ..Load-handling
  136     ...Discharging
  137     ....Automatic
  138     ..Fluid hoist
  139     ..Lever hoist
  140     .Surface
  141     ..Self-propelled
  142     ..Drum
  142.1   .Wheeled trolley
  266     BOOM OR MAST
  267     .Extensible by sliding sections
  268     ..By fluid pressure
  269     ..Having bearing means between extensible sections
  270     METHODS
  271     MISCELLANEOUS
  *       ******************************
  *       DIGEST
  *       ******************************
  DIG 1   Pallet handling