Patent ID: 8205717

Claim:
A rail assembly comprising a pair of support rails, each support rail comprised of a. an elongated rail with an essentially “L” shaped cross section, b. a plurality of t-slots formed by the elongated rail along the exterior of the “L” shape, wherein the t-slots are formed along the length of the rails, wherein the t-slots can accept the head of a bolt at the ends of the t-slot, wherein the t-slot prevents the rotation of the bolt, wherein the head of the bolt is incapable of being removed from the t-slot except at the ends of the t-slot at the ends of the ladder rail wherein there are two t-slots on each exterior wall, c. a plurality of t-slots formed by the elongated rail along the interior of the “L” shape, wherein the t-slots are formed along the length of the rails, wherein there is one t-slot on each interior wall, wherein the t-slots can accept UHMW slip pads, wherein the slip pads can be inserted onto a ladder rail and provide a non-stick surface that allows ladders to more easily slide along the ladder rail, wherein the interior t-slots are smaller than the exterior t-slots therefore not accepting bolt heads only UHMW slip pads; d. two or more cross-members assemblies arranged perpendicular to the support rails and so that the support rails face each other, that is, the rails form a mirror image of each other with the lower side of each “L” pointing towards the center of the rail assembly; e. wherein the support rails ride on the two or more cross-members assemblies; f. wherein the two or more cross-members assemblies attach to the rails by clamping or bolting directly through the two or more cross-members assemblies; g. one or more roller assemblies attached at one or both ends of the support rails , and h. a means to connect the cross-members to the support rails wherein cross-members connect two support rails to form a ladder mounting system.