Captive pin apparatus for retention of a drawbar in a trailer hitch receiver
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Apr 24, 2017
filing date -
Apr 24, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
An arm (26, 56) attached to a trailer hitch drawbar (22) at an attachment point behind a given depth (D) of insertion of the drawbar into a trailer hitch receiver tube (24). At this depth a pin receiving hole (22A) in the drawbar aligns with a pin receiving hole (24A) in the receiver tube. The arm extends forward beside the drawbar to a position beside the pin receiving hole in the drawbar. A captive pin (21, 71) on the forward end of the arm is urged by a spring to slide into the aligned receiving holes (22A, 24A). The pin has a range of motion (T) sufficient for insertion into the pin receiving holes and retraction of the pin to clear the outer surface of the receiver tube when the drawbar is inserted into the receiver tube. A knob (42) on the pin provides for manual retraction.
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