Global Patent Index - EP 0999171 A1

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

EP 0999171 A1 20000510 (EN)

Application

EP 98830667 A 19981105

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

B66C 23/26; B66C 23/34

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)

Designated contracting state (EPC)

BE CH DE ES FR IT LI PT

DOCDB simple family (publication)

EP 0999171 A1 20000510

DOCDB simple family (application)

EP 98830667 A 19981105