Fire escape – ladder – or scaffold – Ladder with land vehicle
Patent
1997-02-25
1999-11-23
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Ladder with land vehicle
182 97, B60R 302
Patent
active
059883162
ABSTRACT:
An access device for providing access between a substrate surface and an elevated surface. The access device comprises a ladder having first and second ends, the ladder including first and second side members connected by a plurality of cross members extending between the ends of the ladder. The ladder is pivotally connected to a rotary axle extending horizontally from the support surface so that the ladder may be moved between a substantially downwardly outwardly disposed boarding position and a substantially horizontally disposed storage position. The ladder is movable between the boarding position and the storage position and vice versa such that in a first step, the ladder is rotated on the axle by at least 90.degree. from the boarding position to a first intermediate position, in a second step, the ladder is pivoted between the first intermediate position and a second intermediate position wherein the second end of the ladder extends substantially above the elevated surface, and, in a third step, by rotation of the axle in the opposite direction, the ladder is moved between the second intermediate position and the storage position.
REFERENCES:
patent: 3190392 (1965-06-01), Ashton
Chin-Shue Alvin
Justoy Pty Ltd
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