Boat side-ladder

Details Boat side-ladder Boat side-ladder

1989-03-27

1990-11-20

Chotkowski, Karen J.

Fire escape, ladder, or scaffold

Means maintaining step lever on horizontally pivoted ladder

182 84, 182 86, E06C 900

Patent

active

049711687

ABSTRACT:
The side ladder has upper and lower footpaces (1, 3) connected with side elements (5) on which a flight of steps (7) is hinged. A first actuator (11) is provided for withdrawing the ladder from a housing (15) on the boat and a second actuator (13) is provided for rotating the ladder about a horizontal axis. A leverage (21, 23, 27, 29) keeps the steps (7) and the lower footpace (3) in their horizontal position during rotation of the ladder. A piston and cylinder system (53) is provided for operating a handrail (41) and a further rotation of the ladder about a vertical axis can be carried out by a hydraulic motor (31).

REFERENCES:
patent: 501694 (1893-07-01), Richards
patent: 784832 (1905-03-01), Bracegirdle
patent: 3856110 (1974-12-01), Nilsson
patent: 4363150 (1982-12-01), Nilsson
patent: 4669574 (1987-06-01), Moutot

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