EP 1762694 B1 20130501 - Metal ladder and method of manufacture thereof
Title (en)
Metal ladder and method of manufacture thereof
Title (de)
Metalleiter und deren Herstellungsverfahren
Title (fr)
Echelle métallique et procédé de fabrication d'une telle échelle
Publication
Application
Priority
FR 0509346 A 20050913
Abstract (en)
[origin: EP1762694A2] The ladder (1), made from tubular metal rungs (4) and uprights (2, 3), has the ends of the rungs made with a smaller cross-section than their central sections, with stepped coupling zones between them. The rung ends have oblong cross-sections and are inserted through matching holes in the ladder uprights before being fixed in place by having their outer edges rolled or crimped. In addition, the outer surfaces of the rungs are grooved to make them non-slip.
IPC 8 full level
E06C 7/08 (2006.01); B21D 39/06 (2006.01)
CPC (source: EP)
B21D 39/063 (2013.01); E06C 7/085 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1762694 A2 20070314; EP 1762694 A3 20100120; EP 1762694 B1 20130501; ES 2422427 T3 20130911; FR 2890682 A1 20070316; FR 2890682 B1 20090220
DOCDB simple family (application)
EP 06291438 A 20060912; ES 06291438 T 20060912; FR 0509346 A 20050913