Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tatsuya Hoshino0
Hajime Hiranaga0
Date of Patent
June 7, 2011
0Patent Application Number
116980800
Date Filed
January 26, 2007
0Patent Primary Examiner
Patent abstract
A filter comprises a housing and a filter cartridge. The housing includes an inlet, an outlet, a vent, and a filter cartridge chamber. The filter cartridge is permanently positioned in the filter cartridge chamber of the housing with an annular channel between the filter cartridge and the housing. The bottom of the filter cartridge and the interior of the bottom of the housing each include a surface which inclines upwardly toward the annular channel.
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