Patent · US Active

Drain valve for filter service and method

US8845897B2 · kind B2 · utility

16Cited by
11References
19Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 18, 2008
Grant dateSep 30, 2014
Priority date
Expiry dateJun 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.