Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David E. Fly0
Date of Patent
August 10, 2010
0Patent Application Number
122293940
Date Filed
August 22, 2008
0Patent Primary Examiner
Patent abstract
A portable winch system mounted to a standard trailer hitch tow ball of a vehicle permits steep incline pulling angles of the winch without cutting into the neck portion of the tow ball. To achieve a broad range of inclination angles, the cup plate (socket that fits over the tow ball) and/or the ball-locking portion of the winch system includes relieved neck-clearance areas. In some embodiments, the cup plate and/or ball-locking mechanism includes neck contact points that are softer than the material of the tow ball.
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