Drain valve for filter service and method
US8845897B2 · kind B2 · utility
16Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2008 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jun 20, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4973
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid filter is described, where a drain valve is configured to move back and forth into open and closed positions. The drain valve and a filter cartridge are in a structural arrangement such that the drain valve is put in an open position before the filter and/or a filter element therein can be serviced or replaced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.