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Swivel hitch for connecting an implement to a tractor

  • US 5,152,357 A
  • Filed: 05/31/1991
  • Issued: 10/06/1992
  • Est. Priority Date: 05/31/1991
  • Status: Expired due to Fees
First Claim
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1. In combination with a tractor and an implement, a primary drive line for delivering power from a power-take-off shaft on the tractor to an input shaft on the implement, said primary drive line including a swivel hitch comprising:

  • an upper gearbox fastened to and positioned between a pair of spaced apart, upper vertical plates carried on a tongue extending forwardly from the implement, the upper gearbox having an input shaft and an output shaft with said upper gearbox output shaft being coupled to said implement input shaft;

    a lower gearbox fastened to and positioned between a pair of spaced apart, lower vertical plates carried by a yoke assembly that is attached to the tractor, the lower gearbox being generally vertically aligned with said upper gearbox and having first and second shafts with said first shaft being coupled to said upper gearbox input shaft while said second shaft is connected to said tractor power-take-off shaft;

    a pivot tube rigidly secured to said upper vertical plates for movement therewith and being positioned between said upper and lower gearboxes; and

    a pivot housing rigidly fastened to said lower vertical plates for movement therewith and being cooperatively engaged with said pivot tube to permit pivotal movement therebetween and thereby allow relative movement in a generally horizontal plane between said tractor and said implement while maintaining a draft connection therebetween through said cooperatively engaged pivot tube and pivot housing, said lower gearbox being rotatable relative to said upper gearbox about a generally vertical axis to maintain a driving connection therebetween when the tractor makes turns relative to said implement.

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