Invention Grant
- Patent Title: Freeze resistant water filter
- Patent Title (中): 防冻滤水器
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Application No.: US11758841Application Date: 2007-06-06
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Publication No.: US07708148B2Publication Date: 2010-05-04
- Inventor: Karl Fritze
- Applicant: Karl Fritze
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Aleksander Medved
- Main IPC: B01D27/08
- IPC: B01D27/08

Abstract:
A freeze resistant filter cartridge assembly, includes a filter cartridge including a filter housing and a filter media and having at least one component selected from a list of components including: the filter housing being formed of an increased elasticity polyolefin polymer having elongation and glass transition properties that allow for stretching of the housing during a freezing event rather than rupturing; a sleeve having a volume of air entrapped therein within and being disposed in the interior of the filter cartridge; and the filter housing formed of a conventional polyolefin having a wall thickness great enough to resist freeze induced expansion stresses. A method of forming a freeze resistant filter cartridge assembly is further included.
Public/Granted literature
- US20070278148A1 FREEZE RESISTANT WATER FILTER Public/Granted day:2007-12-06
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