Pin box assembly for trailer
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United States of America Patent
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Aug 16, 2011
Grant Date -
Feb 21, 2008
app pub date -
Jun 13, 2007
filing date -
Jun 13, 2006
priority date (Note) -
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status (Latency Note)
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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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