Drain design for use in a polyurethane composite bathing vessel
US9320394B2 · kind B2 · utility
0Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2011 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Sep 15, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.