Unitary filter tank and an underdrain for filtering a body of water
US8936721B2 · kind B2 · utility
5Cited by
27References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2011 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exemplary embodiments include a unitary pool filter tank and/or an underdrain for a pool filter unit. Embodiments of the unitary pool filter tank can have an integrally formed housing and base. The filter tank can be formed using a blow molding process in which the base of the filter tank is reinforced using multiple polymer layers that have been folded and/or pinched together. Embodiments of the underdrain can be formed by interlocking top and bottom components. The top and bottom components can be interlocked by inter-component locking structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.