Locking mechanism for a ladder

E - Fixed Constructions – 06 – C

Patent

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Details

E06C 1/12 (2006.01) E06C 1/18 (2006.01)

Patent

CA 2609778

A locking mechanism for a collapsible ladder (1) comprising several ladder sections (5), each ladder section comprising two ladder bars (2, 3) arranged parallel to each other and interconnected at one end by a rung to form a U- shaped ladder section, and where each ladder section (5) is telescopically inserted into a lower ladder section to form a collapsible ladder (1), and where dampers (23) are provided at the lower end of the ladder bars (2, 3, and where the locking mechanism comprises retaining mechanisms (20, 41) provided on each ladder bar (2, 3), where a single pair of actuators of the locking mechanism can be arranged on any of the ladder sections (5) and still be able to collapse the entire ladder (1).

Mécanisme de blocage pour échelle télescopique (1) comportant plusieurs segments d'échelle (5), chaque segment d'échelle comportant deux montants d'échelle (2, 3) agencés en parallèle l'un à l'autre et reliés à une extrémité par un barreau pour former un segment d'échelle en U, chaque segment d'échelle (5) étant introduit télescopiquement dans un segment d'échelle inférieur pour former une échelle télescopique (1), des amortisseurs (23) étant disposés à l'extrémité inférieure des montants d'échelle (2, 3). Le mécanisme de blocage ci-décrit comprend en outre des mécanismes de retenue (20, 41) ménagés sur chaque montant d'échelle (2, 3), une seule paire d'actionneurs du mécanisme de blocage étant agencée sur l'un quelconque des segments d'échelle (5) tout en permettant le pliage télescopique de l'échelle entière (1).

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