The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 1981
Filed:
Mar. 11, 1980
Lars O Eriksson, 149 00, Nynashamn, SE;
Other;
Abstract
A device at an unfoldable escape-ladder assembled of rungs (1), the ends of which are attached between flexible lateral members (2), preferably steel wires, said rungs (1) being longish and of plate-shaped material and capable to be stacked, the upper portion of the escape-ladder intended to be attached to a wall (4), a stay or the like, which escape-ladder in folded state having its rungs (1) lying stacked and each of the steel wires (2) forming a ring for each rung (1), which escape ladder is provided with a means for releasing the ladder. According to the invention, each rung (1 ) has substantially S-shaped cross-section, where the free ends of the S-shaped portion (7) are extended so as to form two parallel legs (8,9), and that the steel wires (2) are attached on the rungs (1) with their substantial longitudinal direction perpendicular to said legs. In unfolded state of the ladder and upper one (8) of said legs constitutes a tread and the lower one (9) constitutes a distance member for maintaining the ladder at a certain distance from a wall or the like, along which the ladder is unfolded.