Multi-section ladder for scaling poles

Details Multi-section ladder for scaling poles Multi-section ladder for scaling poles

1975-11-17

1976-12-07

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Single pole or strand

182178, 182189, 182206, E06C 110, E06C 748

Patent

active

039957144

ABSTRACT:
A portable, light-weight, multi-section step ladder for scaling poles and formed by a main or top section followed by a train of extension sections. Each section includes a single vertical spar and a series of steps secured thereto. The upper end of the main section is provided with an open-loop assembly adapted to engage the pole and to harness this section to the pole when a downward force is exerted thereon, the lower end of the main section terminating in a coupling head. Each extension section is provided at its upper end with a latching piece adapted to engage a coupling head and at its lower end with a coupling head, whereby the main section and the extension sections may readily be interlinked to form a ladder whose length is sufficient to scale the pole.

REFERENCES:
patent: 721427 (1903-02-01), Cope
patent: 1142072 (1915-06-01), Wingerd
patent: 3232664 (1966-02-01), McBride
patent: 3460649 (1969-08-01), Baker
patent: 3901354 (1975-08-01), Grebausky

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