Exchangeable media filter
US8431021B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Jul 16, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2201/003
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A filter element for positioning in a filter compartment of a spa includes a plastic mesh outer cylinder and a plastic mesh inner cylinder, the inner cylinder being positioned coaxially with respect to the outer cylinder to define an annular interior chamber with a filter element of annular cross-section disposed in the chamber and having keyed landings formed on the top and bottom thereof, which respectively mate and interlock with one or more keyed landings on top and bottom caps of the filter element. The apparatus may further include a plurality of vertically disposed mesh compartments interlinked in a ring and disposed within the filter element, the compartments being filled with a selected filter medium or filter media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.