Aggregate retaining device for drain covers
US6340035B2 · kind B2 · utility
36Cited by
30References
20Claims
0Family size
Inventor
Key dates
| Filing date | Mar 5, 2001 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/1236
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for and a method of forming a surface finish on a top surface of a drain cover for swimming pools or spas so that the surface finish of the drain cover matches the surface finish of the pool or spa. The apparatus comprises a ring shaped structure that is adapted to be positioned on the top surface of the drain cover wherein the ring is mounted along the general outer perimeter of the top surface of the drain cover. An exposed aggregate or plaster finish is then formed on the top surface of the cover enclosed by the ring so that the ring retains and shapes the surface finish.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.