Swivel hitch with improved mounting of lower gearbox

Details Swivel hitch with improved mounting of lower gearbox Swivel hitch with improved mounting of lower gearbox

1991-05-31

1993-02-16

Marmor, Charles A.

Motor vehicles

Vehicle trains

Drive means betwen vehicles through coupling

180 536, 74 156, B60D 100, B60K 2508

Patent

active

051862719

ABSTRACT:
A primary drive line for delivering power from a power-take-off (pto) shaft on a tractor to an input shaft on an implement includes a swivel hitch comprised of an upper gearbox and a lower gearbox. The upper gearbox is fastened to a pair of spaced apart, upper vertical plates carried on a tongue extending forwardly from the implement, and the lower gearbox is fastened to a pair of spaced apart, lower vertical plates carried by a yoke assembly that is attached to the tractor. An output shaft on the upper gearbox is coupled to the implement input shaft. The lower gearbox has two shafts, the first of which is coupled to an input shaft on the upper gearbox. The second shaft on the lower gearbox is connected to the tractor pto shaft. The lower gearbox is mounted by using bushings with rubber inserts which permit limited repositioning of the lower gearbox with respect to the yoke assembly in order to compensate for any misalignment of the lower gearbox first shaft when coupling it to the upper gearbox input shaft.

REFERENCES:
patent: 1778503 (1927-01-01), Lord
patent: 3557892 (1971-01-01), Burrough
patent: 3897841 (1975-08-01), Phillips et al.
patent: 4525987 (1985-07-01), Werner et al.
patent: 4738461 (1988-04-01), Stephenson et al.
patent: 4793430 (1988-12-01), Stephenson et al.
patent: 4805927 (1989-02-01), Stephenson et al.

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