Liquid filter construction for freezing environments
US9463399B2 · kind B2 · utility
2Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2010 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Oct 21, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/403
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A liquid filter construction comprising a filter housing is disclosed. The filter housing contains a filter element for filtration of liquids using a urea aqueous solution. A compressible element is positioned within the filter housing, the compressible element comprising an enclosure containing a gas-filled volume. This compressible element compresses in response to the generation of pressure from freezing of liquid within the filtration housing. The compression of the compressible element thereby avoids damage to the filter element, the filter housing, and adjacent equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.