EP 0999171 A1 20000510 - A foldable jib of a tower crane
Title (en)
A foldable jib of a tower crane
Title (de)
Zusammenlegbarer Ausleger für einen Turmkran
Title (fr)
Flèche repliable pour grue à tour
Publication
Application
Priority
EP 98830667 A 19981105
Abstract (en)
The present invention refers to a foldable jib for a tower crane comprising a proximal section (11) pivoted to the top of the tower, an intermediate section (12) pivoted to the proximal section (11) and a distal section (13) pivoted to the intermediate section (12); first means for operating the opening and the closing of said intermediate section (12) relative to said proximal section (11); second means for operating the opening and the closing of said distal section (13) relative to said intermediate section (12), wherein said first means and said second means comprise, each, an active control device (31a, 31b) for the opening and the closing of the corresponding section of jib and a passive extensible arrest device (32a, 48a, 32b, 48b), said arrest device being suitable to maintain the jib in operating position. <IMAGE>
IPC 1-7
IPC 8 full level
B66C 23/26 (2006.01); B66C 23/34 (2006.01)
CPC (source: EP)
B66C 23/26 (2013.01); B66C 23/34 (2013.01)
Citation (search report)
- [AD] IT 1186207 B 19871118 - BENAZZATO GRU SPA [IT]
- [A] EP 0870726 A1 19981014 - POTAIN SA [FR]
- [A] FR 2436097 A1 19800411 - PINGON INT [ES]
- [A] GB 2196605 A 19880505 - POTAIN SA
- [A] DE 4314779 A1 19941110 - NOELL SERV & MASCHTECHN GMBH [DE]
- [A] EP 0536060 A1 19930407 - POTAIN SA [FR]
- [A] FR 2306158 A1 19761029 - CADILLON ROGER [FR]
Designated contracting state (EPC)
BE CH DE ES FR IT LI PT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98830667 A 19981105