| |
 |
|
Class Information
Number: 212/230
Name: Traversing hoists > Having horizontally swinging boom or bridge > Extensible by movement of boom or boom segment along longitudinal axis thereof
Description: Apparatus including a horizontally swinging boom* and wherein either (a) means are provided which permits translational movement of the boom along its longitudinal axis and relative to the boom-supporting structure, or (b) the boom consists of a plurality of interconnected segments slidably related to one another whereby the effective length of the boom may be changed.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7293669 |
Tensioning system for a mobile telescopic crane |
Nov. 13, 2007 |
| 5865328 |
Telescopic boom |
Feb. 2, 1999 |
| 5803279 |
Automatically deployable load-line receiving mast structure for limiting deflection of proportionally extendable boom section crane |
Sep. 8, 1998 |
| 5678708 |
Extendible crane boom |
Oct. 21, 1997 |
| 5632395 |
Telescopic rod |
May. 27, 1997 |
| 5624046 |
Telescopic rods for a crane |
Apr. 29, 1997 |
| 5595313 |
Crane, particularly a track-bound mobile crane |
Jan. 21, 1997 |
| 5542812 |
Crane having swing away hoist mount |
Aug. 6, 1996 |
| 5518129 |
Boom including plural arms telescopically extendible and retractable successively |
May. 21, 1996 |
| 5203837 |
Balanced lifting crane |
Apr. 20, 1993 |
| 5139157 |
Concrete placing boom assembly for ready-mix concrete |
Aug. 18, 1992 |
| 5119961 |
Electric pickup winch |
Jun. 9, 1992 |
| 5061149 |
Fork lift vehicle having a telescopic boom with an articulated jib section capable of vertical and horizontal swinging relative to the boom |
Oct. 29, 1991 |
| 5018933 |
Device for transferring an invalid to and from an automobile |
May. 28, 1991 |
| 4982853 |
Reinforcement mechanism for multi-stage telescopic boom |
Jan. 8, 1991 |
| 4954042 |
Double telescoping arm for robotic palletizers and the like |
Sep. 4, 1990 |
| 4666357 |
Ship transport system |
May. 19, 1987 |
| 4660731 |
Telescopic crane for heavy loads |
Apr. 28, 1987 |
| 4658972 |
Method for stretching and folding extension jib in wheeled type crane |
Apr. 21, 1987 |
| 4635805 |
Crane boom locking pin insertion indicator and actuator means |
Jan. 13, 1987 |
| 4605132 |
Lifting tool |
Aug. 12, 1986 |
| 4547121 |
Self-locking telescoping manipulator arm |
Oct. 15, 1985 |
| 4436476 |
Rod device for use as an arm of an excavator |
Mar. 13, 1984 |
| 4396126 |
Telescoping crane boom |
Aug. 2, 1983 |
| 4392573 |
Tie rope compensation arrangement |
Jul. 12, 1983 |
| 4352434 |
Pendant supported hydraulic extensible boom |
Oct. 5, 1982 |
| 4298128 |
Movable support for rotatable extend/retract screw in telescopic crane boom |
Nov. 3, 1981 |
| 4266908 |
Excavating apparatus |
May. 12, 1981 |
| 4257201 |
Self-centering telescoping beams |
Mar. 24, 1981 |
| 4249853 |
Apparatus for loading and unloading a vehicle |
Feb. 10, 1981 |
| 4036372 |
Extension and retraction means for the telescopic boom assembly of a crane |
Jul. 19, 1977 |
| 3978990 |
Mobile log skidder |
Sep. 7, 1976 |
| 3972571 |
Boom slider assembly |
Aug. 3, 1976 |
| 3963127 |
Blocking arrangement in hydraulically operated cranes |
Jun. 15, 1976 |
| 3960285 |
Material handling apparatus |
Jun. 1, 1976 |
| 3954196 |
Material handling apparatus |
May. 4, 1976 |
| 3945333 |
Means for storing and connecting jib for telescopic boom of mobile crane |
Mar. 23, 1976 |
|
|
|
