Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mark H. Bruce0
Date of Patent
July 20, 2010
Patent Application Number
11820534
Date Filed
June 20, 2007
Patent Primary Examiner
Patent abstract
A polymer composition including a resin and a fiberglass is wrapped around the bell portion of a clay pipe to provide a cushion thereto to resist damage due to impact forces, and holds the bell in compression to thereby increase the tensile strength thereof. The length of the bell can be lengthened using a polyester-based material for an extension, where the extension is also wrapped with the polymer composition.
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