| Class Number |
Class Name |
No. of Patents |
| 212/294 |
Adjustable to transport or nonuse position (e.g., collapsible) |
80 |
| 212/298 |
Collapsible inverted "v" frame supports boom rigging |
46 |
| 212/299 |
Collapsible or foldable boom |
103 |
| 212/300 |
Vertically swinging boom having pivoted sections |
113 |
| 212/295 |
Crane boom supported by foldable or collapsible tower |
14 |
| 212/296 |
Extensible tower of relatively sliding sections |
31 |
| 212/297 |
Hydraulically pivoted tower or tower sections |
13 |
| 212/301 |
Vehicle stablizing means |
62 |
| 212/306 |
Boom or mast attached |
36 |
| 212/302 |
Lowered from vehicle body (e.g., outrigger) |
51 |
| 212/303 |
Gear or screw drive to extend foot |
21 |
| 212/304 |
Hydraulic means to extend foot |
138 |
| 212/305 |
Pivoted lever or link to extend foot |
61 |
| 212/347 |
Boom or mast |
91 |
| 212/348 |
Extensible by sliding sections |
89 |
| 212/349 |
By fluid pressure |
80 |
| 212/350 |
Having bearing means between extensible sections |
61 |
| 212/292 |
Boom position lock |
74 |
| 212/166 |
Closure remover |
40 |
| 212/901 |
Dolley-type cranes |
64 |
| 212/169 |
Ground wheel operated |
0 |
| 212/199 |
Having boom shiftable vertically along a linear path |
14 |
| 212/204 |
By mounting on vertically extensible support |
10 |
| 212/203 |
Fluid actuated |
16 |
| 212/201 |
Length of hoisting cable between boom and load decreases automatically as boom is raised |
5 |
| 212/200 |
Movable along nonvertical rectilinear path |
7 |
| 212/202 |
Vertically spaced fastening means along boom support |
14 |
| 212/170 |
Having clutch or variable speed transmission |
3 |
| 212/174 |
Including means to selectively couple plural hoist functions to common power shaft |
3 |
| 212/172 |
Power takeoff |
3 |
| 212/171 |
Traveling bridge |
2 |
| 212/173 |
Variable speed transmission |
3 |
| 212/195 |
Having counterweight or counterbalancing means |
108 |
| 212/196 |
Counterweight movable relative to load support |
77 |
| 212/197 |
Along rectilinear path |
35 |
| 212/198 |
On wheeled carriage |
31 |
| 212/223 |
Having horizontally swinging boom or bridge |
28 |
| 212/245 |
And means to swing boom horizontally |
30 |
| 212/247 |
Gear drive |
32 |
| 212/248 |
Including rack or worm |
15 |
| 212/249 |
Human or animal powered |
4 |
| 212/246 |
Including flexible member driving gear or pulley having axis collinear with boom pivot |
9 |
| 212/232 |
And vertically swinging |
45 |
| 212/242 |
Having specific engager for load |
12 |
| 212/243 |
Grab |
4 |
| 212/235 |
Including means for sluing boom as it is swung vertically |
2 |
| 212/237 |
Including means to swing boom vertically |
5 |
| 212/239 |
Flexible cable |
42 |
| 212/240 |
Having passage for luffing cable through boom supporting member |
3 |
| 212/241 |
Human or animal powered |
3 |
| 212/238 |
Fluid actuated ram |
63 |
| 212/236 |
Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging |
4 |
| 212/233 |
Plural booms |
16 |
| 212/234 |
With adjacent load-supporting rack |
6 |
| 212/224 |
Boom mounted for guided horizontal translation (e.g., trolley mounted) |
19 |
| 212/230 |
Extensible by movement of boom or boom segment along longitudinal axis thereof |
37 |
| 212/231 |
And vertically swinging |
101 |
| 212/250 |
Having fluid ram directly actuating load cable or sheave therefor |
16 |
| 212/252 |
Having passage for hoist cable through boom supporting member |
16 |
| 212/253 |
Having specific bearing structure |
89 |
| 212/251 |
Having specific engager for load |
14 |
| 212/225 |
Having trolley thereon |
34 |
| 212/228 |
And means acting independently of hoist mechanism to shift trolley |
6 |
| 212/227 |
And vertically swinging |
12 |
| 212/226 |
Having vertical support remote from pivot (i.e., swinging bridge) |
15 |
| 212/175 |
Having means facilitating assembly or disassembly |
71 |
| 212/177 |
Of boom sections |
62 |
| 212/178 |
Of counterweight from hoist |
44 |
| 212/176 |
Of sectional vertical support for boom |
20 |
| 212/179 |
Of traversing hoist from support |
70 |
| 212/180 |
Vehicle support |
131 |
| 212/181 |
And having motor to swing boom |
19 |
| 212/272 |
Having means to prevent or dampen load oscillations |
46 |
| 212/273 |
Antisway (i.e., horizontal movements) |
52 |
| 212/275 |
By cyclic control of trolley acceleration or deceleration |
61 |
| 212/274 |
By triangulation of load cables |
88 |
| 212/291 |
Having operator support or cab |
43 |
| 212/276 |
Having random condition sensor combined with an indicator or alarm or controlling means or disabling means |
98 |
| 212/280 |
Boom movement stops responsive to overtravel or proximity to powerline |
43 |
| 212/281 |
Hoisting stops upon load being raised to a predetermined position (e.g., anti-two block) |
52 |
| 212/278 |
Means determining overloading produced by load (e.g., strain gauges) |
120 |
| 212/277 |
Senses crane tilt (e.g., outrigger sensors) |
35 |
| 212/279 |
Sensor regulates counterweight or counterbalancing means |
27 |
| 212/293 |
Having snubber or boom backswing stop |
13 |
| 212/255 |
Having vertically swinging boom |
27 |
| 212/256 |
And compensating means to maintain horizontal movement of load |
8 |
| 212/257 |
And trolley |
18 |
| 212/264 |
Extensible by movement of boom or boom segment along longitudinal axis thereof |
70 |
| 212/260 |
Having means to swing boom vertically |
11 |
| 212/262 |
Flexible cable |
53 |
| 212/263 |
Human or animal powered |
9 |
| 212/261 |
Fluid actuated ram |
111 |
| 212/259 |
Having specific engager for load |
15 |
| 212/258 |
Protruding laterally from vehicle |
25 |
| 212/270 |
Methods |
119 |
| 212/271 |
Miscellaneous |
45 |
| 212/71 |
Overhead |
26 |
| 212/72 |
Cable, ship coaling type |
3 |
| 212/76 |
Cable |
33 |
| 212/86 |
Automatic stop |
6 |
| 212/122 |
Carriage holders, track clamp |
19 |
| 212/87 |
Draft-rope, hoist-rope traverse |
14 |
| 212/91 |
Cable return |
3 |
| 212/88 |
Divided hoist-rope |
0 |
| 212/92 |
Gravity return |
4 |
| 212/93 |
Cable |
1 |
| 212/89 |
Hook-lowering |
16 |
| 212/90 |
Running track |
3 |
| 212/94 |
Draft-rope, independent traverse |
10 |
| 212/95 |
Anchored hoist-rope |
1 |
| 212/96 |
Hook-lowering |
5 |
| 212/97 |
Load suspension |
9 |
| 212/98 |
Hoist, carry and lower |
9 |
| 212/115 |
Ratchet sheave |
0 |
| 212/106 |
Rope catch |
2 |
| 212/108 |
Pivoted |
2 |
| 212/109 |
Double |
0 |
| 212/107 |
Sliding |
0 |
| 212/110 |
Rope grip |
4 |
| 212/114 |
Coacting sheave |
3 |
| 212/111 |
Variable elevation |
1 |
| 212/112 |
Carriage release |
0 |
| 212/113 |
Side draft |
0 |
| 212/99 |
Running rope |
1 |
| 212/100 |
Sheave catch |
4 |
| 212/101 |
Pivoted cable extension |
0 |
| 212/102 |
Sheave-frame catch |
1 |
| 212/104 |
Pivoted |
2 |
| 212/105 |
Double |
1 |
| 212/103 |
Sliding |
0 |
| 212/116 |
Trips, stops and knockers |
2 |
| 212/77 |
Load-handling |
8 |
| 212/78 |
Draft-rope |
2 |
| 212/79 |
Dumping |
1 |
| 212/80 |
Double tackle |
4 |
| 212/81 |
Grab |
3 |
| 212/82 |
Sling |
0 |
| 212/83 |
Load suspension |
12 |
| 212/84 |
Grab |
7 |
| 212/85 |
Sling |
1 |
| 212/123 |
Pulley changers |
0 |
| 212/117 |
Rope carriers |
2 |
| 212/118 |
Cable stop-operated |
1 |
| 212/120 |
Carrier sheave-operated |
2 |
| 212/121 |
Permanently spaced |
4 |
| 212/119 |
Trolley-supported |
0 |
| 212/336 |
Nonmotor traverse |
6 |
| 212/341 |
Fluid hoist |
4 |
| 212/342 |
Lever hoist |
3 |
| 212/337 |
Nonmotor hoisting |
9 |
| 212/338 |
With load-handler |
10 |
| 212/339 |
Discharging |
0 |
| 212/340 |
Automatic |
0 |
| 212/328 |
Self-propelled trolley |
21 |
| 212/329 |
Automatic traversing stop |
9 |
| 212/330 |
Load-handling |
24 |
| 212/331 |
Electric |
32 |
| 212/332 |
With grab |
10 |
| 212/333 |
With guide bar |
14 |
| 212/334 |
With grab |
12 |
| 212/335 |
With ladle |
3 |
| 212/73 |
Shiftable track |
13 |
| 212/74 |
Longitudinally movable |
7 |
| 212/75 |
Tilting |
3 |
| 212/343 |
Surface vehicle |
14 |
| 212/345 |
Drum |
22 |
| 212/344 |
Self-propelled |
58 |
| 212/346 |
Trolley having wheels which contact different sides or planes of a beam |
27 |
| 212/307 |
Ship mounted or floating (e.g., a crane fixed to a platform adapted to float) |
56 |
| 212/309 |
Having horizontally and vertically swinging boom |
31 |
| 212/310 |
Cable actuated horizontally and vertically |
8 |
| 212/311 |
Plural booms |
0 |
| 212/308 |
Including counterweight or means to compensate for list, trim or skew of vessel |
63 |
| 212/312 |
Traveling bridge |
75 |
| 212/323 |
Bridge mounted motor for load lifting |
27 |
| 212/322 |
Bridge mounted motor for trolley traversal via cable means |
13 |
| 212/313 |
Flexible |
5 |
| 212/318 |
Having horizontally swingable track- or load-rotating means on trolley |
18 |
| 212/319 |
Having load engager mounted for guided vertical movement beneath trolley |
78 |
| 212/316 |
Having plural trolleys |
42 |
| 212/327 |
Having specific engager for load |
37 |
| 212/324 |
Having vertical supporting legs (e.g., gantry) |
60 |
| 212/326 |
Having specific engager for load |
36 |
| 212/325 |
Overhanging end |
62 |
| 212/314 |
Having vertically adjustable track |
27 |
| 212/317 |
Having vertically or horizontally swinging boom on bridge or trolley |
18 |
| 212/320 |
Motor fixed to bridge-supporting structure |
11 |
| 212/315 |
Supporting second traveling bridge |
21 |
| 212/321 |
Trolley mounted motor for trolley traversal via cable means |
7 |
| 212/167 |
With haul-in line |
18 |
| 212/168 |
With means to project load engager beyond end of boom |
22 |
| 212/282 |
With mechanical indicator |
19 |
| 212/283 |
With weight indicator |
12 |
| 212/284 |
With motor control |
31 |
| 212/286 |
Cyclic operation |
28 |
| 212/290 |
In control cab |
16 |
| 212/287 |
Manual fluid valve actuator |
20 |
| 212/288 |
Plural fluid motors |
26 |
| 212/289 |
Controlled by common actuator |
17 |
| 212/285 |
Remote control or at dual control positions |
74 |
