Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
August 16, 2011
Patent Application Number
11762273
Date Filed
June 13, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
An extension coupling for interconnecting a trailer to a tow hitch carried on a tow vehicle includes an elongated arm having a first end and a second end. The first end is pivotally connected to the trailer. A king pin is connected to the second end. The king pin includes a projecting stop that engages the tow hitch to strictly limit pivoting movement of the elongated arm relative to the tow hitch. In one possible embodiment, the elongated arm is a pin box assembly.
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