Patent ID: 8419038

Claim:
A fifth wheel trailer hitch with locking mechanism comprising, a pin having a cylindrical base and top is pivot coupled axially to tilt longitudinally and laterally to an end of a trailer tow bar; a mounting plate for attachment to a truck bed that includes a key way that is a depression formed therein that has a greater diameter for receiving the end of said pin cylindrical base end to slide there along and into a key way lesser diameter rounded forward section; said pin cylindrical base includes a slot formed at least partially around and adjacent to the pin base bottom, that will receive an edge of said key way rounded forward section and seat therein to prevent lifting of said pin from said key way rounded forward section, and said key way rounded forward section includes a center plug opening to receive a plug end fitted therein; said pin includes a center longitudinal passage that said plug fits and slides in, and has a lateral port that intersects said longitudinal passage that receive a cam rod fitted to turn therein that includes a crank outer end and has a straight rod end mounted off-center to a cam rod inner end that pivotally fits into a lateral hole through said plug, with turning of said cam rod crank end to lift or lower said plug in said pin longitudinal passage and functions as a primary lock, maintaining said plug end in said key way center plug opening; and a secondary lock for maintaining said plug end in said key way center plug opening that includes at least one straight rod that is fitted through a lateral hole formed through said pin, above said circumferential groove into said pin longitudinal passage, whose inner end is to fit into a plug lateral hole formed into the side of said plug when said plug is positioned in said key way center plug opening, and an outer end of said straight rod is pivotally connected to an arm whereby, a lifting of said arm to the horizontal, moves an inner end of said straight rod end into said plug lateral hole, locking said plug in place, functioning as the secondary lock.