Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David R. Hall0
Neil Cannon0
Date of Patent
May 31, 2011
Patent Application Number
12357570
Date Filed
January 22, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
In one aspect of the invention, a trenching machine has at least one roller assembly comprising a body rotationally supported by an axle exteriorly mounted to a trenching chain or wheel. At least a portion of the body comprises a substantially conical shape.
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