Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Joseph A. Pieciak, Jr.0
Richard Belinda0
Tad A. Weiss0
Date of Patent
August 2, 2011
0Patent Application Number
119739060
Date Filed
October 11, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A fastener for composite material having a dense composition employs a head which has a socket and a recessed underside and a lower rim. The shank has an upper portion with an enlarged diameter and a left hand thread while the lower portion has a tri-lobed configuration and is traversed by a right hand thread. The right hand thread may have a plurality of notches which, in one embodiment, are arranged in a spiral array.
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