EP 0984895 A1 20000315 - CRANE WITH TELESCOPE JIB
Title (en)
CRANE WITH TELESCOPE JIB
Title (de)
KRAN MIT EINEM TELESKOPAUSLEGER
Title (fr)
GRUE A FLECHE TELESCOPIQUE
Publication
Application
Priority
- DE 9801498 W 19980527
- DE 19722889 A 19970528
- DE 19824671 A 19980526
Abstract (en)
[origin: US6189712B1] A crane includes a telescopic jib having telescopic jib sections and a base jib. The telescopic sections are arranged so that they can be axially moved into and out of the base jib individually. Locking pins are used hold the telescopic sections in place once they are in the required position. A hydraulic piston-cylinder unit arranged in the telescopic jib can push or pull individual jib sections when the respective locking bolts are removed. The movable portion of the piston-cylinder unit has two securing and locking units located at opposing ends of the movable portion. To move the jib section, one of the securing and locking units is connected to the jib section to be moved and the movement of the movable portions pushed or pulls the telescopic section. Once the jib section is moved to a desired position, the locking pin is reinserted to hold the position of the jib section. Since there are two securing and locking units, the piston-cylinder unit is approximately half the length of the telescopic section.
IPC 1-7
IPC 8 full level
B66C 23/687 (2006.01); B66C 23/693 (2006.01); B66C 23/70 (2006.01)
CPC (source: EP US)
B66C 23/705 (2013.01 - EP US); B66C 23/708 (2013.01 - EP US)
Citation (search report)
See references of WO 9854081A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6189712 B1 20010220; AT E216350 T1 20020515; DE 29824453 U1 20010301; EP 0984895 A1 20000315; EP 0984895 B1 20020417; JP 2001526615 A 20011218; JP 4068161 B2 20080326; WO 9854081 A1 19981203
DOCDB simple family (application)
US 42460499 A 19991124; AT 98934847 T 19980527; DE 29824453 U 19980526; DE 9801498 W 19980527; EP 98934847 A 19980527; JP 50010799 A 19980527