Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
James S. Barbera0
Date of Patent
August 24, 2010
Patent Application Number
11715134
Date Filed
March 7, 2007
Patent Primary Examiner
Patent abstract
The invention includes a pair of swivels for use with an auger boring machine. One of the swivels allows for rotation of a first auger of a first auger assembly connected to the trailing end of a pilot tube without rotating the pilot tube. The other swivel allows for rotation of a larger diameter second auger connected to the trailing end of the first auger assembly without rotating the first auger. Each of the swivels includes a thrust bearing.
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