Drain design for use in a polyurethane composite bathing vessel

摘要

A bathing vessel has a bottom, and a drain disposed in the bottom adjacent a blended area that is disposed between the side wall and the bottom. The side wall, the bottom wall, and the blended area are made of a first layer of rigid polyurethane material and a second layer of capping material attached to said first layer. A ratio of a density of the polyurethane backing adjacent the drain to a thickness of polyurethane backing is between 1-80:1. The side wall, the blended area and the bottom wall flex to absorb loads adjacent the drain.

主权项

1. A bathing vessel, said bathing vessel comprising:
a bottom, a side wall, a drain disposed in said bottom adjacent a blended area, said blended area disposed between said side wall and said bottom, wherein said side wall, said blended area and said bottom wall are constructed of a sandwich having
a first layer of rigid polyurethane material,a second layer of capping material attached to said first layer,wherein a ratio of a density of said polyurethane backing adjacent said drain to a thickness of polyurethane backing is between 1-80:1 and wherein said side wall, said blended area and said bottom wall flex to absorb loads adjacent said drain.