Patent ID: 8528875

Claim:
An adjustable equipment curb, comprising: upper and lower frames, each having opposed first and second length-adjustable frame sides and opposed length-adjustable first and second ends, each comprised of a plurality of interconnecting members and interconnected by corner brackets to form a rigid frame; the sides and ends of the upper frame having upper surfaces to support and mount a piece of equipment thereon and the lower frame having means for mounting the curb to a support surface; means associated with each of the upper and lower frame sides and ends for rigidly joining the interconnecting members to maintain the sides and ends at chosen lengths; and means for supporting the upper frame upon the lower frame comprising an H shaped upper housing mounted to the upper frame, the upper housing comprising a pair of vertical legs affixed to the upper frame and an intermediate cross member therebetween for engaging with an upper end of a biasing system, the upper housing being connected to a lower housing by means for providing a limited amount of vertical travel of the upper housing with respect to the lower housing.