Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1991017338) FOLDING LADDER WITH MOVABLE RUNGS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017338 International Application No.: PCT/CH1991/000104
Publication Date: 14.11.1991 International Filing Date: 03.05.1991
IPC:
E06C 1/383 (2006.01)
E FIXED CONSTRUCTIONS
06
DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS, IN GENERAL; LADDERS
C
LADDERS
1
Ladders in general
02
with rigid longitudinal member or members
38
Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
383
Foldable ladders in which the longitudinal members are brought together on folding
Applicants:
SCHUMACHER, François [CH/CH]; CH
Inventors:
SCHUMACHER, François; CH
Priority Data:
1566/90-709.05.1990CH
Title (EN) FOLDING LADDER WITH MOVABLE RUNGS
(FR) ECHELLE PLIABLE A BARREAUX MOBILES
Abstract:
(EN) A ladder of which the side rails (1, 1') are connected not by fixed rungs but by movable rungs (2), by means of pins (3) which connect the rungs to the side rails via plates (4) riveted thereto.
(FR) Echelle dont les montants (1, 1') sont reliés non pas par des barreaux fixes, mais par des barreaux mobiles (2), grâce à des axes (3) les reliant aux montants à l'aide de platines (4) rivées sur les montants.
Designated States: CA, SE, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP0483306CA2066615