Patent ID: 7316439

Claim:
An extendable room mechanism for recreational vehicles, comprising: a stationary floor fixed to a chassis of the recreational vehicle, one or more rollers, said one or more rollers being rotatably attached to said stationary floor, said one or more rollers being configured such that a center axis of each of said one or more rollers lies within a plane of said stationary floor and said one or more rollers are further configured such that a circumferential edge of each of said one or more rollers lies beyond the plane of said stationary floor such that each circumferential edge extends vertically above and laterally beyond an edge of said stationary floor, a sliding floor, said sliding floor being configured such that said sliding floor connects slidably to the recreational vehicle and, in a contracted position, can slide over said stationary floor and, in an extended position, can extend laterally outwards from said stationary floor, said sliding floor being further configured such that an interior edge of said sliding floor features an inclined plane, said inclined plane being configured such that an innermost area of said sliding floor comprises a steepest sloping portion of said inclined plane and said inclined plane being further configured such that a slope of said inclined plane decreases in steepness away from the innermost area, and said inclined plane being configured such that said inclined plane rolls upon said rollers as the extendable room is extended and contracted.