Title: Folding fire escape ladder

Abstract: A folding fire escape ladder has a first upright, L-shaped in transverse cross-section, as well as a second upright, similarly shaped. The uprights are joined for movement into and out of nested position by parallel, cross rungs of flat material journalled at their opposite ends on pins projecting from the uprights. Stops on at least one upright engage and limit the movement of the rungs. A latch lever has a notch corner adapted to engage one of the uprights when the latch lever is hooked onto the other upright. A spring urges the latch lever into such engagement except when the notch corner cams the latch lever out of engaging position. A hood on the latch lever normally overlies the upper ends of the uprights. Each rung has elongated grooves in its opposite sides occupied by facing beads on treads of inverted U-shape in cross-section. A crank lever is journalled in one of the uprights and when rotated presses a cam on the lever against the other upright to spread the uprights apart.

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Inventors: Reinhard, Cheyenne A. (Hayward, CA, US)

Application Number: 963024
Filing Date: 1978-11-22
Publication_date: 1980-02-19
Assignee:
Primary Class(es): 182/160 182/96
Other Classes:
US Patent Ref:

256990	Apr, 1882	Fish	182/160.
278301	May, 1883	Welsh	182/96.
704126	Jul, 1902	Seessle	182/160.
3575263	Apr, 1971	Reinhard	182/160.
3756347	Sep, 1973	Messera	182/160.

Other Refs:
Primary Examiner: Machado, Reinaldo P.
Assistant Examiner:
Attorney: Lothrop & West