US 4,298,212 AGranted

Hitch pin

OwnerMerle A. Jamisoninventor

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Abstract

A draft vehicle including a first rearwardly projecting supportive tow bar having a first upstanding opening therethrough is provided and a towed apparatus including a second forwardly projecting tow bar horizontally lapped over and supported from the first tow bar is also provided. A second opening is formed through the second tow bar and registered with the first opening and an upstanding hitch pin is passed through the openings coupling the first and second tow bars together. The hitch pin includes an upper end portion projecting above the second tow bar and abutment structure is mounted on the upper end portion of the pin for vertical shifting relative thereto above a lower limit position on the pin. Further, strong spring structure is operatively connected between the abutment structure and the pin for yieldingly biasing the abutment structure downwardly along the pin toward its lower limit position thereon.

Claims10

Dependent claims

In combination with a draft vehicle including a first rearwardly projecting supported tow bar portion defining a first upstanding opening extending therethrough and a towed apparatus including a second forwardly projecting tow bar portion horizontally lapped over and supported from said first tow bar portion and defining a second upstanding opening extending therethrough registered with said first opening, an upstanding hitch pin freely passed through said openings coupling said first and second tow bar portions together, said hitch pin including an upper end portion projecting above said second tow bar portion, abutment means mounted on said upper end portion for vertical shifting relative thereto above a lower positive limit position on said upper end portion and opposing and abutted downwardly against said second tow bar portion, and pre-loaded force means connected between said abutment means and hitch pin yieldingly biasing said abutment means against upward movement from said lower limit position.

Dependencies are inferred from the claim text.