Stair construction for plastic liner swimming pools

Claim 2

In a plastic liner swimming pool that comprises a pool sidewall and a pool floor, a recessed region extending into at least one sidewall, the recessed region comprising two lateral walls extending into the recess at an angle of 0* to 90* to each other, and a water-tight, plastic, pool liner covering the pool sidewall, recess and pool floor, the invention comprising a stair, the upper portion of which is affixed to the upper part of the recessed region of the sidewall with the lower portion depending into the pool toward the pool floor, and at least two support means extending from the lateral walls through a water-tight fitting in the pool liner and engaging the stair so as to suspend the stair spaced from the pool liner.

Claim 3

The swimming pool of claim 1 in which the top riser of the stair is affixed semipermanently to the sidewall.

Claim 4

The swimming pool of claim 1 in which the support means are pipes threaded water-tight into fittings retained in the sidewall.

Claim 5

The swimming pool of claim 1 in which the stair is molded of rigid plastic.

Claim 6

In a plastic liner swimming pool that comprises a pool sidewall and a pool floor, a recessed region formed into at least one sidewall, and a water-tight plastic liner covering the pool sidewall and floor, the invention comprising a preformed, molded plastic, rigid, self standing stair, means for attaching semipermanently the top riser of the stair to the pool sidewall, and support means for suspending the remaining portion of the stair free standing with respect to the pool liner, the support means comprising at least four pipe sections fixed into and extending from the recessed portion of the sidewall, each of the support means engaging a portion of the stair for support thereof out of bearing contact with the pool liner.

Claim 7

In a plastic liner swimming pool that comprises a pool sidewall and a pool floor, a recessed region formed into at least one sidewall, and a water-tight plastic liner covering the pool sidewall and floor, the invention comprising a preformed, molded plastic, rigid, self standing stair, means for attaching semipermanently the top riser of the stair to the pool sidewall, and support means for suspending the remaining portion of the stair free standing with respect to the pool liner, the support means comprising at least four pipe sections fixed into and extending from the recessed portion of the sidewall, each of the support means engaging a portion of the stair for support thereof out of bearing contact with the pool liner.

Claim 8

The swimming pool of claim 5 in which the pipe sections are aluminum threaded through water-tight fittings into the sidewall.

Claim 9

The swimming pool of claim 6 having four treads and five risers.

Claim 10

The swimming pool of claim 5 in which the treads are patterned to reduce slipping.

Claim 11

The swimming pool of claim 5 in which the portion of the stair engaging at least one of the pipe section comprises a vertically extending, elongated, U-shaped slot, the slot having a width approximating the diameter of the pipe.