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Class Information
Number: 212/264
Name: Traversing hoists > Having vertically swinging boom > Extensible by movement of boom or boom segment along longitudinal axis thereof
Description: Apparatus including a vertically 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 change.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7604135 |
Tensioning system for a mobile telescopic crane |
Oct. 20, 2009 |
| 7293669 |
Tensioning system for a mobile telescopic crane |
Nov. 13, 2007 |
| 7231741 |
Mobile cellular telephone tower |
Jun. 19, 2007 |
| 7195126 |
Self-propelled working machine |
Mar. 27, 2007 |
| 6565307 |
Transfer machine |
May. 20, 2003 |
| 6138844 |
Boom truck |
Oct. 31, 2000 |
| 6065621 |
Portable and towable lift mechanism |
May. 23, 2000 |
| 6062793 |
Apparatus for retracting and extending a boom |
May. 16, 2000 |
| 6026523 |
Storable patient lift and transfer apparatus |
Feb. 22, 2000 |
| 6024232 |
Boom truck |
Feb. 15, 2000 |
| 5624046 |
Telescopic rods for a crane |
Apr. 29, 1997 |
| 5515654 |
Telescopic boom apparatus |
May. 14, 1996 |
| 5478192 |
Boom operated fork truck |
Dec. 26, 1995 |
| 5281078 |
Portable hoist |
Jan. 25, 1994 |
| 5215202 |
Mobile vehicular apparatus with aerial cabin |
Jun. 1, 1993 |
| 5211297 |
Foldable crane |
May. 18, 1993 |
| 5183168 |
Mobile vehicular apparatus with aerial cabin |
Feb. 2, 1993 |
| 5014863 |
Vehicle mounted crane |
May. 14, 1991 |
| 5012939 |
Color coded boom and chart system for proportionally extensible boom assembly |
May. 7, 1991 |
| 4988009 |
Telescopic boom mobile cranes |
Jan. 29, 1991 |
| 4984695 |
Wheel crane |
Jan. 15, 1991 |
| 4982853 |
Reinforcement mechanism for multi-stage telescopic boom |
Jan. 8, 1991 |
| 4954041 |
Triple section telescopic boom materials handling vehicle |
Sep. 4, 1990 |
| 4946051 |
Two-boom crawler crane |
Aug. 7, 1990 |
| 4932176 |
Extendible and retractible mast system |
Jun. 12, 1990 |
| 4782962 |
Back packable portable unit |
Nov. 8, 1988 |
| 4746024 |
Aerial boom with tensiometer |
May. 24, 1988 |
| 4727995 |
Crane with pivotal boom |
Mar. 1, 1988 |
| 4688689 |
Telescoping crane boom |
Aug. 25, 1987 |
| 4664272 |
Telescoping crane boom with locking and indicator means |
May. 12, 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 |
| 4657109 |
Attachment jib for cranes |
Apr. 14, 1987 |
| 4635805 |
Crane boom locking pin insertion indicator and actuator means |
Jan. 13, 1987 |
| 4634337 |
Integrated wheel lift wrecker |
Jan. 6, 1987 |
| 4630741 |
Extendible boom including a rack and pinion mechanism |
Dec. 23, 1986 |
| 4595108 |
Method for stretching and folding extension jib in wheeled type crane |
Jun. 17, 1986 |
| 4585132 |
Extensible boom with manual section stored in base |
Apr. 29, 1986 |
| 4582206 |
Mobile aerial hoist |
Apr. 15, 1986 |
| 4572383 |
Crane |
Feb. 25, 1986 |
| 4561552 |
Attachment jib for cranes |
Dec. 31, 1985 |
| 4557391 |
Method of controlling the angle of a pivotal boom with extensible sections |
Dec. 10, 1985 |
| 4544071 |
External pendant pay-out system with anti-droop control |
Oct. 1, 1985 |
| 4543030 |
Fifth wheel wrecker hoist |
Sep. 24, 1985 |
| 4523684 |
Crane tool for attachment to a backhoe arm |
Jun. 18, 1985 |
| 4508233 |
Compact heavy duty lifting crane |
Apr. 2, 1985 |
| 4493426 |
Attachment jib for cranes |
Jan. 15, 1985 |
| 4492312 |
External pendant pay-out system with anti-droop control |
Jan. 8, 1985 |
| 4492311 |
Coupling and latching mechanism for extensible boom |
Jan. 8, 1985 |
| 4489838 |
Low droop multi-part pendant supported boom |
Dec. 25, 1984 |
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