US Patent Class 212
TRAVERSING HOISTS



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Current as of: June, 1999
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  DF  CLASS NOTES
272  DF  HAVING MEANS TO PREVENT OR DAMPEN LOAD OSCILLATIONS
273  DF  .~ Antisway (i.e., horizontal movements)
274  DF  .~.~ By triangulation of load cables
275  DF  .~.~ By cyclic control of trolley acceleration or deceleration
276  DF  HAVING RANDOM CONDITION SENSOR COMBINED WITH AN INDICATOR OR ALARM OR CONTROLLING MEANS OR DISABLING MEANS
277  DF  .~ Senses crane tilt (e.g., outrigger sensors)
278  DF  .~ Means determining overloading produced by load (e.g., strain gauges)
279  DF  .~ Sensor regulates counterweight or counterbalancing means
280  DF  .~ Boom movement stops responsive to overtravel or proximity to powerline
281  DF  .~ Hoisting stops upon load being raised to a predetermined position (e.g., anti-two block)
282  DF  WITH MECHANICAL INDICATOR
283  DF  .~ With weight indicator
284  DF  WITH MOTOR CONTROL
285  DF  .~ Remote control or at dual control positions
286  DF  .~ Cyclic operation
287  DF  .~ Manual fluid valve actuator
288  DF  .~.~ Plural fluid motors
289  DF  .~.~.~ Controlled by common actuator
290  DF  .~ In control cab
291  DF  HAVING OPERATOR SUPPORT OR CAB
292  DF  BOOM POSITION LOCK
293  DF  HAVING SNUBBER OR BOOM BACKSWING STOP
166  DF  CLOSURE REMOVER
167  DF  WITH HAUL-IN LINE
168  DF  WITH MEANS TO PROJECT LOAD ENGAGER BEYOND END OF BOOM
169  DF  GROUND WHEEL OPERATED
170  DF  HAVING CLUTCH OR VARIABLE SPEED TRANSMISSION
171  DF  .~ Traveling bridge
172  DF  .~ Power takeoff
173  DF  .~ Variable speed transmission
174  DF  .~ Including means to selectively couple plural hoist functions to common power shaft
175  DF  HAVING MEANS FACILITATING ASSEMBLY OR DISASSEMBLY
176  DF  .~ Of sectional vertical support for boom
177  DF  .~ Of boom sections
178  DF  .~ Of counterweight from hoist
179  DF  .~ Of traversing hoist from support
180  DF  .~.~ Vehicle support
181  DF  .~.~.~ And having motor to swing boom
294  DF  ADJUSTABLE TO TRANSPORT OR NONUSE POSITION (E.G., COLLAPSIBLE)
295  DF  .~ Crane boom supported by foldable or collapsible tower
296  DF  .~.~ Extensible tower of relatively sliding sections
297  DF  .~.~ Hydraulically pivoted tower or tower sections
298  DF  .~ Collapsible inverted "V" frame supports boom rigging
299  DF  .~ Collapsible or foldable boom
300  DF  .~.~ Vertically swinging boom having pivoted sections
301  DF  .~ Vehicle stablizing means
302  DF  .~.~ Lowered from vehicle body (e.g., outrigger)
303  DF  .~.~.~ Gear or screw drive to extend foot
304  DF  .~.~.~ Hydraulic means to extend foot
305  DF  .~.~.~ Pivoted lever or link to extend foot
306  DF  .~.~ Boom or mast attached
307  DF  SHIP MOUNTED OR FLOATING (E.G., A CRANE FIXED TO A PLATFORM ADAPTED TO FLOAT)
308  DF  .~ Including counterweight or means to compensate for list, trim or skew of vessel
309  DF  .~ Having horizontally and vertically swinging boom
310  DF  .~.~ Cable actuated horizontally and vertically
311  DF  .~.~.~ Plural booms
195  DF  HAVING COUNTERWEIGHT OR COUNTERBALANCING MEANS
196  DF  .~ Counterweight movable relative to load support
197  DF  .~.~ Along rectilinear path
198  DF  .~.~.~ On wheeled carriage
199  DF  HAVING BOOM SHIFTABLE VERTICALLY ALONG A LINEAR PATH
200  DF  .~ Movable along nonvertical rectilinear path
201  DF  .~ Length of hoisting cable between boom and load decreases automatically as boom is raised
202  DF  .~ Vertically spaced fastening means along boom support
203  DF  .~ Fluid actuated
204  DF  .~ By mounting on vertically extensible support
312  DF  TRAVELING BRIDGE
313  DF  .~ Flexible
314  DF  .~ Having vertically adjustable track
315  DF  .~ Supporting second traveling bridge
316  DF  .~ Having plural trolleys
317  DF  .~ Having vertically or horizontally swinging boom on bridge or trolley
318  DF  .~ Having horizontally swingable track- or load-rotating means on trolley
319  DF  .~ Having load engager mounted for guided vertical movement beneath trolley
320  DF  .~ Motor fixed to bridge-supporting structure
321  DF  .~ Trolley mounted motor for trolley traversal via cable means
322  DF  .~ Bridge mounted motor for trolley traversal via cable means
323  DF  .~ Bridge mounted motor for load lifting
324  DF  .~ Having vertical supporting legs (e.g., gantry)
325  DF  .~.~ Overhanging end
326  DF  .~.~ Having specific engager for load
327  DF  .~ Having specific engager for load
223  DF  HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE
224  DF  .~ Boom mounted for guided horizontal translation (e.g., trolley mounted)
225  DF  .~ Having trolley thereon
226  DF  .~.~ Having vertical support remote from pivot (i.e., swinging bridge)
227  DF  .~.~ And vertically swinging
228  DF  .~.~ And means acting independently of hoist mechanism to shift trolley
230  DF  .~ Extensible by movement of boom or boom segment along longitudinal axis thereof
231  DF  .~.~ And vertically swinging
232  DF  .~ And vertically swinging
233  DF  .~.~ Plural booms
234  DF  .~.~ With adjacent load-supporting rack
235  DF  .~.~ Including means for sluing boom as it is swung vertically
236  DF  .~.~ Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging
237  DF  .~.~ Including means to swing boom vertically
238  DF  .~.~.~ Fluid actuated ram
239  DF  .~.~.~ Flexible cable
240  DF  .~.~.~.~ Having passage for luffing cable through boom supporting member
241  DF  .~.~.~.~ Human or animal powered
242  DF  .~.~ Having specific engager for load
243  DF  .~.~.~ Grab
245  DF  .~ And means to swing boom horizontally
246  DF  .~.~ Including flexible member driving gear or pulley having axis collinear with boom pivot
247  DF  .~.~ Gear drive
248  DF  .~.~.~ Including rack or worm
249  DF  .~.~ Human or animal powered
250  DF  .~ Having fluid ram directly actuating load cable or sheave therefor
251  DF  .~ Having specific engager for load
252  DF  .~ Having passage for hoist cable through boom supporting member
253  DF  .~ Having specific bearing structure
255  DF  HAVING VERTICALLY SWINGING BOOM
256  DF  .~ And compensating means to maintain horizontal movement of load
257  DF  .~ And trolley
258  DF  .~ Protruding laterally from vehicle
259  DF  .~ Having specific engager for load
260  DF  .~ Having means to swing boom vertically
261  DF  .~.~ Fluid actuated ram
262  DF  .~.~ Flexible cable
263  DF  .~.~.~ Human or animal powered
264  DF  .~ Extensible by movement of boom or boom segment along longitudinal axis thereof
71  DF  OVERHEAD
72  DF  .~ Cable, ship coaling type
73  DF  .~ Shiftable track
74  DF  .~.~ Longitudinally movable
75  DF  .~.~ Tilting
76  DF  .~ Cable
77  DF  .~.~ Load-handling
78  DF  .~.~.~ Draft-rope
79  DF  .~.~.~.~ Dumping
80  DF  .~.~.~.~.~ Double tackle
81  DF  .~.~.~.~.~ Grab
82  DF  .~.~.~.~.~ Sling
83  DF  .~.~.~ Load suspension
84  DF  .~.~.~.~ Grab
85  DF  .~.~.~.~ Sling
86  DF  .~.~ Automatic stop
87  DF  .~.~ Draft-rope, hoist-rope traverse
88  DF  .~.~.~ Divided hoist-rope
89  DF  .~.~.~ Hook-lowering
90  DF  .~.~.~ Running track
91  DF  .~.~.~ Cable return
92  DF  .~.~.~ Gravity return
93  DF  .~.~.~.~ Cable
94  DF  .~.~ Draft-rope, independent traverse
95  DF  .~.~.~ Anchored hoist-rope
96  DF  .~.~.~ Hook-lowering
97  DF  .~.~ Load suspension
98  DF  .~.~.~ Hoist, carry and lower
99  DF  .~.~.~ Running rope
100  DF  .~.~.~ Sheave catch
101  DF  .~.~.~.~ Pivoted cable extension
102  DF  .~.~.~ Sheave-frame catch
103  DF  .~.~.~.~ Sliding
104  DF  .~.~.~.~ Pivoted
105  DF  .~.~.~.~.~ Double
106  DF  .~.~.~ Rope catch
107  DF  .~.~.~.~ Sliding
108  DF  .~.~.~.~ Pivoted
109  DF  .~.~.~.~.~ Double
110  DF  .~.~.~ Rope grip
111  DF  .~.~.~.~ Variable elevation
112  DF  .~.~.~.~.~ Carriage release
113  DF  .~.~.~.~.~ Side draft
114  DF  .~.~.~.~ Coacting sheave
115  DF  .~.~.~ Ratchet sheave
116  DF  .~.~.~ Trips, stops and knockers
117  DF  .~.~ Rope carriers
118  DF  .~.~.~ Cable stop-operated
119  DF  .~.~.~ Trolley-supported
120  DF  .~.~.~ Carrier sheave-operated
121  DF  .~.~.~ Permanently spaced
122  DF  .~.~ Carriage holders, track clamp
123  DF  .~.~ Pulley changers
328  DF  .~ Self-propelled trolley
329  DF  .~.~ Automatic traversing stop
330  DF  .~.~ Load-handling
331  DF  .~.~.~ Electric
332  DF  .~.~.~.~ With grab
333  DF  .~.~.~.~ With guide bar
334  DF  .~.~.~.~.~ With grab
335  DF  .~.~.~.~.~ With ladle
336  DF  .~ Nonmotor traverse
337  DF  .~.~ Nonmotor hoisting
338  DF  .~.~ With load-handler
339  DF  .~.~.~ Discharging
340  DF  .~.~.~.~ Automatic
341  DF  .~.~ Fluid hoist
342  DF  .~.~ Lever hoist
343  DF  .~ Surface vehicle
344  DF  .~.~ Self-propelled
345  DF  .~.~ Drum
346  DF  .~ Trolley having wheels which contact different sides or planes of a beam
347  DF  BOOM OR MAST
348  DF  .~ Extensible by sliding sections
349  DF  .~.~ By fluid pressure
350  DF  .~.~ Having bearing means between extensible sections
270  DF  METHODS
271  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTION
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901  DF  DOLLEY-TYPE CRANES