Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 9, 2017
Patent Application Number
14444808
Date Filed
July 28, 2014
Patent Citations Received
Patent Primary Examiner
Patent abstract
A fastener for locking two or more sheet sections together comprises a shaft tapered at one end and having a driving head at the other end with a relatively coarse thread running from the tapered end towards the head and a relatively fine thread between the coarse thread and the head. The fine thread has a pitch which is approximately equal to the thickness of the sheet sections and extends from the head for from two to six threads.
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