Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 23, 2008
Patent Application Number
11458165
Date Filed
July 18, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A composite drain plug for an automobile engine. The drain plug is made up of a hollow metal sleeve that is flanged at one end and closed at the other end. There is a core portion filling the hollow sleeve and having a head portion and a stub flange adjacent the flanged end of the sleeve. A circumferential sealing bead is bonded to the stub flange. The core portion is a glass-filled polymer and the sealing bead is made from a material which includes a cross-linked elastomer dispersed in a thermoplastic carrier.
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