Modular drinking water filtration system with locking arrangement to assure filter cartridge compatibility
US7662283B2 · kind B2 · utility
28Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2008 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Mar 21, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2201/006
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A modular filter system using replaceable filter cartridges includes a locking arrangement that prevents rotation of the flow control valve spindle in the filter head, but includes an unlocking arrangement on the cartridge that unlocks the locking arrangement if the proper replacement cartridge is used. The locking arrangement may include spring biased locking pins carried on the filter head and matching unlocking pins on the filter cartridge to operate through an intermediate adaptor ring that is set on assembly to match the positions of the locking and unlocking pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.