E - Fixed Constructions – 06 – C
Patent
E - Fixed Constructions
06
C
227/15
E06C 9/08 (2006.01) E06C 7/18 (2006.01)
Patent
CA 1275279
ABSTRACT Folding (collapsible) fire-escape ladder with safety belt, made of two U sections (channels/shapes) (A,S), which form the side rails, and rungs (W) of square tubing. The rungs are attached to the side rails by articulated joints. The ladder has a burglarproofing device on the top (J,K). One or more separate release points/escape stations can be installed by sawing through the outer rail (A) and by fixing a release bracket (O) in the outer rail (A) above the cut. The release bracket (O) has a collar (R) which replaces the material removed by the saw. Joining the outer rail (A) at the release point/escape station is achieved by means of a locking plug (K) which is threaded through a hole in the outer rail (A) and the release bracket (O). A safety belt (E) is attached to the outer rail (A) by means of a locking bracket (B) which is threaded in onto the outer rail (A) either from the top, or through a threading introduction slot at the escape station which corresponds to the width of the locking bracket (B). The widest locking bracket (B) is placed at the top station. Below, the slots (G) become sequentially narrower to enable locking bracket (B) to slide over the threading slots below. The rungs (W) lock against unfolding beyond 90° in that their ends engage against the walls of the side rail sections (A,S). The wall fixing brackets (P), which are shaped to fit the inner rail (S), are fixed to this in the same bolt fixtures as the rungs (W), and stabilize the ladder against lateral movement.
504576
Borden Ladner Gervais Llp
Nilsen Arild
LandOfFree
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