EP 0659952 B1 19990804 - Spiral staircase with central tube as well as device with similar staircases
Title (en)
Spiral staircase with central tube as well as device with similar staircases
Title (de)
Rohrspindeltreppe sowie Anordnung aus mehreren Rohrspindeltreppen
Title (fr)
Escalier hélicoidal avec tube central ainsi que dispositif avec plusieurs escaliers similaires
Publication
Application
Priority
DE 4344181 A 19931223
Abstract (en)
[origin: EP0659952A1] The invention relates to a steel spiral staircase with central tube. Short load-bearing elements, which preferably comprise plates (9) and welded-on transverse webs (7, 8), are welded on a central tube (1). The entire assembly is then provided with corrosion protection as one unit, in particular it is hot-galvanised. Stairs (10), which are likewise provided with corrosion protection, are mounted on site. <IMAGE>
IPC 1-7
IPC 8 full level
E04F 11/02 (2006.01); E04F 11/032 (2006.01)
CPC (source: EP)
E04F 11/032 (2013.01)
Designated contracting state (EPC)
DE DK ES FR NL
DOCDB simple family (publication)
EP 0659952 A1 19950628; EP 0659952 B1 19990804; DE 4344181 A1 19950629; DE 59408581 D1 19990909; PL 306482 A1 19950626; PL 57950 Y1 20000630
DOCDB simple family (application)
EP 94119714 A 19941214; DE 4344181 A 19931223; DE 59408581 T 19941214; PL 10984094 U 19941222; PL 30648294 A 19941222