Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 12, 2007
Patent Application Number
11321867
Date Filed
December 30, 2005
Patent Primary Examiner
Patent abstract
A piston for an air pump is disclosed. The piston has a piston rod having a connecting axle hole for positioning a bearing, which is protected with a bearing protection cap. The bearing is firmly secured within the axle hole.
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