Bed ladder arrangement

Claim 1

In combination, a bunk bed having an upper side-defining rail, said rail consisting essentially of an angle iron having a nominal width of 1 1/2 inches, and a hook-equipped ladder extending generally vertically with the hook engaging said angle iron rail, said hook being a flat, straplike member formed into three discrete, serially interconnected integral portions: a first depending portion connected to said ladder, a generally horizontally extending bight portion overlying said rail and a second depending portion spaced from said first depending portion and cooperating therewith in preventing horizontal movement of said ladder when said hook is engaging said rail, the improvement consisting of the fact that: said second depending portion is disposed to be downwardly convergent relative to said first depending portion at an angle in the range of about 7 1/2 * to about 24* from parallelism, the inner length of said bight portion between said first and second depending portions being in the range of about 0.01 inch to about 0.07 inch greater than the nominal width of the angle iron, the angular length of the second depending portion measured from the inner side of the bight portion being in the range of about 0.40 inch to about 0.70 inch whereby at least about 10* movement of the ladder arcuately away from the bed is required to permit vertical movement for disengaging the ladder hook from the rail, said member being equipped with an elongated rib extending over the first depending portion and the bight portion.