Patent ID: 7025174

Claim:
A self-contained ladder assembly comprising, a support portion and a ladder portion, said support portion comprising a mounting frame having oppositely disposed slide track members with elongated guide track openings therein and cross brackets extending therebetween, one of said cross brackets having oppositely disposed notch interconnecting plates, said plates pivotally secured to respective slide track members, said ladder portion comprises, ladder support frame members slidably disposed on said mounting frame by wheel assemblies thereon registerable within respective guide track openings in said mounting frame, a platform interconnecting said ladder support frame members, upper and lower stair portions pivotally secured to one another and to said ladder support frame members, pairs of guide bearing assemblies on rail portions of one of said stair portions registerable within bifurcated guide slots in respective ladder support frame members, hand rail assemblies having elongated slots therein registerable on guide support bolts extending from said respective ladder support frame members, means for securing said handrail assemblies from a first position to a second extended use position, means for storing said upper and lower stair portions within said ladder support frame members.