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1. (WO2017151558) TELESCOPING LADDER WITH A CASCADING COLLAPSE MECHANISM

Pub. No.:    WO/2017/151558    International Application No.:    PCT/US2017/019849
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: E06C 1/12
E06C 7/00
E06C 7/08
Applicants: CORE DISTRIBUTION, INC.
Inventors: SCHLUETER, Nathan L.
KIEFFER, Mitchell I.
Title: TELESCOPING LADDER WITH A CASCADING COLLAPSE MECHANISM
Abstract:
A telescoping ladder is provided, that includes a plurality of columns disposed in a nested arrangement for relative axial movement in a telescopic fashion between a fully-extended position and a collapsed position. The columns are connected to rungs by way of connector assemblies. Each connector assembly has a locking pin moveable between an extended position or a retracted position for extending into or retracting out of openings of adjacent columns to selectively lock or release the columns respectively. The telescoping ladder includes a plurality of actuators that permit collapsing the ladder in a sequential manner, the sequence involving collapsing the columns on a lower portion of the ladder prior to collapsing columns immediately thereabove.