The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2016
Filed:
Nov. 12, 2010
Karim Elayed, Sint-Stevens-Woluwe, BE;
Tom Teck, Oud-Heverlee, BE;
Alain Suttels, Leuven, BE;
Daniel Fertil, Watermael Boitsfort, BE;
Karim Elayed, Sint-Stevens-Woluwe, BE;
Tom Teck, Oud-Heverlee, BE;
Alain Suttels, Leuven, BE;
Daniel Fertil, Watermael Boitsfort, BE;
Donaldson Company, Inc., Minneapolis, MN (US);
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.