EP 0411113 B1 19920610 - STAIRCASE
Title (en)
STAIRCASE
Publication
Application
Priority
- DE 3916590 A 19890522
- DE 8902301 U 19890227
Abstract (en)
[origin: WO9010129A1] Staircase with a plurality of steps, in which each step is rigidly connected, at at least one lateral end, with the following step by means of two vertical supports. The lowest step and the highest step (22, 12) rest on a floor (26, 24), a beam or the equivalent. A quadrangular support consisting of two horizontal supports and two vertical supports (40, 42; 44, 46) which together form a cheek is arranged on at least one lateral end of each step (12 to 22). Each step rests on the associated lower horizontal support and each horizontal support (40, 42) is prolonged outward by a vertical support (44, 46). This prolongation (32) of the upper horizontal support (40) forms the lower horizontal support of the next highest step (12), while the prolongation (48) of the lower horizontal support (42) constitutes the upper horizontal support of the next lowest step (16). On at least one side, at least one vertical support can also be replaced by a brace (206, 208, 306) or by the step itself (124, 128, 130) which in this case has, at least on this side, the thickness of the height of a step.
IPC 1-7
IPC 8 full level
E04F 11/02 (2006.01); E04F 11/022 (2006.01)
CPC (source: EP US)
E04F 11/022 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9010129 A1 19900907; AT E77118 T1 19920615; AU 5179190 A 19900926; AU 635006 B2 19930311; CA 2027589 A1 19900828; DE 3916590 A1 19900913; DE 3916590 C2 19911114; DE 59000155 D1 19920716; DK 0411113 T3 19931101; EP 0411113 A1 19910206; EP 0411113 B1 19920610; ES 2034859 T3 19930401; US 5123210 A 19920623
DOCDB simple family (application)
EP 9000321 W 19900226; AT 90904286 T 19900226; AU 5179190 A 19900226; CA 2027589 A 19900226; DE 3916590 A 19890522; DE 59000155 T 19900226; DK 90904286 T 19900226; EP 90904286 A 19900226; ES 90904286 T 19900226; US 61347790 A 19901026