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Priority to JP5219173ApriorityCriticalpatent/JPS501857A/ja
Publication of JPS501857ApublicationCriticalpatent/JPS501857A/ja
E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
E06C—LADDERS
E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
E06C9/085—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members ladders unfolded in the direction of the longitudinal members
E—FIXED CONSTRUCTIONS
E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
E06C—LADDERS
E06C1/00—Ladders in general
E06C1/02—Ladders in general with rigid longitudinal member or members
E06C1/38—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
E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding