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 Class   212TRAVERSING HOISTS
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  272           HAVING MEANS TO PREVENT OR DAMPEN LOAD OSCILLATIONS
  273           . (1 indent ) Antisway (i.e., horizontal movements)
  274           .. (2 indent ) By triangulation of load cables
  275           .. (2 indent ) By cyclic control of trolley acceleration or deceleration
  276           HAVING RANDOM CONDITION SENSOR COMBINED WITH AN INDICATOR OR ALARM OR CONTROLLING MEANS OR DISABLING MEANS
  277           . (1 indent ) Senses crane tilt (e.g., outrigger sensors)
  278           . (1 indent ) Means determining overloading produced by load (e.g., strain gauges)
  279           . (1 indent ) Sensor regulates counterweight or counterbalancing means
  280           . (1 indent ) Boom movement stops responsive to overtravel or proximity to powerline
  281           . (1 indent ) Hoisting stops upon load being raised to a predetermined position (e.g., anti-two block)
  282           WITH MECHANICAL INDICATOR
  283           . (1 indent ) With weight indicator
  284           WITH MOTOR CONTROL
  285           . (1 indent ) Remote control or at dual control positions
  286           . (1 indent ) Cyclic operation
  287           . (1 indent ) Manual fluid valve actuator
  288           .. (2 indent ) Plural fluid motors
  289           ... (3 indent ) Controlled by common actuator
  290           . (1 indent ) In control cab
  291           HAVING OPERATOR SUPPORT OR CAB
  292           BOOM POSITION LOCK
  293           HAVING SNUBBER OR BOOM BACKSWING STOP
  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           . (1 indent ) Traveling bridge
  172           . (1 indent ) Power takeoff
  173           . (1 indent ) Variable speed transmission
  174           . (1 indent ) Including means to selectively couple plural hoist functions to common power shaft
  175           HAVING MEANS FACILITATING ASSEMBLY OR DISASSEMBLY
  176           . (1 indent ) Of sectional vertical support for boom
  177           . (1 indent ) Of boom sections
  178           . (1 indent ) Of counterweight from hoist
  179           . (1 indent ) Of traversing hoist from support
  180           .. (2 indent ) Vehicle support
  181           ... (3 indent ) And having motor to swing boom
  294           ADJUSTABLE TO TRANSPORT OR NONUSE POSITION (E.G., COLLAPSIBLE)
  295           . (1 indent ) Crane boom supported by foldable or collapsible tower
  296           .. (2 indent ) Extensible tower of relatively sliding sections
  297           .. (2 indent ) Hydraulically pivoted tower or tower sections
  298           . (1 indent ) Collapsible inverted "V" frame supports boom rigging
  299           . (1 indent ) Collapsible or foldable boom
  300           .. (2 indent ) Vertically swinging boom having pivoted sections
  301           . (1 indent ) Vehicle stablizing means
  302           .. (2 indent ) Lowered from vehicle body (e.g., outrigger)
  303           ... (3 indent ) Gear or screw drive to extend foot
  304           ... (3 indent ) Hydraulic means to extend foot
  305           ... (3 indent ) Pivoted lever or link to extend foot
  306           .. (2 indent ) Boom or mast attached
  307           SHIP MOUNTED OR FLOATING (E.G., A CRANE FIXED TO A PLATFORM ADAPTED TO FLOAT)
  308           . (1 indent ) Including counterweight or means to compensate for list, trim or skew of vessel
  309           . (1 indent ) Having horizontally and vertically swinging boom
  310           .. (2 indent ) Cable actuated horizontally and vertically
  311           ... (3 indent ) Plural booms
  195           HAVING COUNTERWEIGHT OR COUNTERBALANCING MEANS
  196           . (1 indent ) Counterweight movable relative to load support
  197           .. (2 indent ) Along rectilinear path
  198           ... (3 indent ) On wheeled carriage
  199           HAVING BOOM SHIFTABLE VERTICALLY ALONG A LINEAR PATH
  200           . (1 indent ) Movable along nonvertical rectilinear path
  201           . (1 indent ) Length of hoisting cable between boom and load decreases automatically as boom is raised
  202           . (1 indent ) Vertically spaced fastening means along boom support
  203           . (1 indent ) Fluid actuated
  204           . (1 indent ) By mounting on vertically extensible support
  312           TRAVELING BRIDGE
  313           . (1 indent ) Flexible
  314           . (1 indent ) Having vertically adjustable track
  315           . (1 indent ) Supporting second traveling bridge
  316           . (1 indent ) Having plural trolleys
  317           . (1 indent ) Having vertically or horizontally swinging boom on bridge or trolley
  318           . (1 indent ) Having horizontally swingable track- or load-rotating means on trolley
  319           . (1 indent ) Having load engager mounted for guided vertical movement beneath trolley
  320           . (1 indent ) Motor fixed to bridge-supporting structure
  321           . (1 indent ) Trolley mounted motor for trolley traversal via cable means
  322           . (1 indent ) Bridge mounted motor for trolley traversal via cable means
  323           . (1 indent ) Bridge mounted motor for load lifting
  324           . (1 indent ) Having vertical supporting legs (e.g., gantry)
  325           .. (2 indent ) Overhanging end
  326           .. (2 indent ) Having specific engager for load
  327           . (1 indent ) Having specific engager for load
  223           HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE
  224           . (1 indent ) Boom mounted for guided horizontal translation (e.g., trolley mounted)
  225           . (1 indent ) Having trolley thereon
  226           .. (2 indent ) Having vertical support remote from pivot (i.e., swinging bridge)
  227           .. (2 indent ) And vertically swinging
  228           .. (2 indent ) And means acting independently of hoist mechanism to shift trolley
  230           . (1 indent ) Extensible by movement of boom or boom segment along longitudinal axis thereof
  231           .. (2 indent ) And vertically swinging
  232           . (1 indent ) And vertically swinging
  233           .. (2 indent ) Plural booms
  234           .. (2 indent ) With adjacent load-supporting rack
  235           .. (2 indent ) Including means for sluing boom as it is swung vertically
  236           .. (2 indent ) Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging
  237           .. (2 indent ) Including means to swing boom vertically
  238           ... (3 indent ) Fluid actuated ram
  239           ... (3 indent ) Flexible cable
  240           .... (4 indent ) Having passage for luffing cable through boom supporting member
  241           .... (4 indent ) Human or animal powered
  242           .. (2 indent ) Having specific engager for load
  243           ... (3 indent ) Grab
  245           . (1 indent ) And means to swing boom horizontally
  246           .. (2 indent ) Including flexible member driving gear or pulley having axis collinear with boom pivot
  247           .. (2 indent ) Gear drive
  248           ... (3 indent ) Including rack or worm
  249           .. (2 indent ) Human or animal powered
  250           . (1 indent ) Having fluid ram directly actuating load cable or sheave therefor
  251           . (1 indent ) Having specific engager for load
  252           . (1 indent ) Having passage for hoist cable through boom supporting member
  253           . (1 indent ) Having specific bearing structure
  255           HAVING VERTICALLY SWINGING BOOM
  256           . (1 indent ) And compensating means to maintain horizontal movement of load
  257           . (1 indent ) And trolley
  258           . (1 indent ) Protruding laterally from vehicle
  259           . (1 indent ) Having specific engager for load
  260           . (1 indent ) Having means to swing boom vertically
  261           .. (2 indent ) Fluid actuated ram
  262           .. (2 indent ) Flexible cable
  263           ... (3 indent ) Human or animal powered
  264           . (1 indent ) Extensible by movement of boom or boom segment along longitudinal axis thereof
  71           OVERHEAD
  72           . (1 indent ) Cable, ship coaling type
  73           . (1 indent ) Shiftable track
  74           .. (2 indent ) Longitudinally movable
  75           .. (2 indent ) Tilting
  76           . (1 indent ) Cable
  77           .. (2 indent ) Load-handling
  78           ... (3 indent ) Draft-rope
  79           .... (4 indent ) Dumping
  80           .... (5 indent ) Double tackle
  81           .... (5 indent ) Grab
  82           .... (5 indent ) Sling
  83           ... (3 indent ) Load suspension
  84           .... (4 indent ) Grab
  85           .... (4 indent ) Sling
  86           .. (2 indent ) Automatic stop
  87           .. (2 indent ) Draft-rope, hoist-rope traverse
  88           ... (3 indent ) Divided hoist-rope
  89           ... (3 indent ) Hook-lowering
  90           ... (3 indent ) Running track
  91           ... (3 indent ) Cable return
  92           ... (3 indent ) Gravity return
  93           .... (4 indent ) Cable
  94           .. (2 indent ) Draft-rope, independent traverse
  95           ... (3 indent ) Anchored hoist-rope
  96           ... (3 indent ) Hook-lowering
  97           .. (2 indent ) Load suspension
  98           ... (3 indent ) Hoist, carry and lower
  99           ... (3 indent ) Running rope
  100           ... (3 indent ) Sheave catch
  101           .... (4 indent ) Pivoted cable extension
  102           ... (3 indent ) Sheave-frame catch
  103           .... (4 indent ) Sliding
  104           .... (4 indent ) Pivoted
  105           .... (5 indent ) Double
  106           ... (3 indent ) Rope catch
  107           .... (4 indent ) Sliding
  108           .... (4 indent ) Pivoted
  109           .... (5 indent ) Double
  110           ... (3 indent ) Rope grip
  111           .... (4 indent ) Variable elevation
  112           .... (5 indent ) Carriage release
  113           .... (5 indent ) Side draft
  114           .... (4 indent ) Coacting sheave
  115           ... (3 indent ) Ratchet sheave
  116           ... (3 indent ) Trips, stops and knockers
  117           .. (2 indent ) Rope carriers
  118           ... (3 indent ) Cable stop-operated
  119           ... (3 indent ) Trolley-supported
  120           ... (3 indent ) Carrier sheave-operated
  121           ... (3 indent ) Permanently spaced
  122           .. (2 indent ) Carriage holders, track clamp
  123           .. (2 indent ) Pulley changers
  328           . (1 indent ) Self-propelled trolley
  329           .. (2 indent ) Automatic traversing stop
  330           .. (2 indent ) Load-handling
  331           ... (3 indent ) Electric
  332           .... (4 indent ) With grab
  333           .... (4 indent ) With guide bar
  334           .... (5 indent ) With grab
  335           .... (5 indent ) With ladle
  336           . (1 indent ) Nonmotor traverse
  337           .. (2 indent ) Nonmotor hoisting
  338           .. (2 indent ) With load-handler
  339           ... (3 indent ) Discharging
  340           .... (4 indent ) Automatic
  341           .. (2 indent ) Fluid hoist
  342           .. (2 indent ) Lever hoist
  343           . (1 indent ) Surface vehicle
  344           .. (2 indent ) Self-propelled
  345           .. (2 indent ) Drum
  346           . (1 indent ) Trolley having wheels which contact different sides or planes of a beam
  347           BOOM OR MAST
  348           . (1 indent ) Extensible by sliding sections
  349           .. (2 indent ) By fluid pressure
  350           .. (2 indent ) Having bearing means between extensible sections
  270           METHODS
  271           MISCELLANEOUS
 
 CROSS-REFERENCE ART COLLECTIONS
 
  901           DOLLEY-TYPE CRANES
 
 FOREIGN ART COLLECTIONS
 
  FOR000           CLASS-RELATED FOREIGN DOCUMENTS


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