Three point coupling arrangement for a tractor

Details Three point coupling arrangement for a tractor Three point coupling arrangement for a tractor

1987-02-18

1990-01-09

Stouffer, Richard T.

Earth working

Mast type hitch

Struts on trailer or between implement parts

91444, 91520, 172450, A01B 59043

Patent

active

048921580

ABSTRACT:
A three point implement hitch arrangement for a tractor including a frame assembly, a pair of draft arms pivotally supported on the frame assembly intermediate their ends and lift cylinders having a cylinder portion pivotally supported on the frame assembly above the draft arms and having a rod portion pivotally connected to the draft arms, forwardly of the draft arm pivotal connections. The lift cylinders are connected in series, wherein the area of the rod end of one cylinder is equal to the area of the head end of the second cylinder, whereby the cylinders may be operated independently to tilt the implement or operated in unison to lift the implement, eliminating the requirement for a complex structural support and control.

REFERENCES:
patent: 2743656 (1956-05-01), Fraga
patent: 3207233 (1965-09-01), Shumaker
patent: 3627053 (1971-12-01), Hook et al.
patent: 3750757 (1973-08-01), Saetti
patent: 4433735 (1984-02-01), Clark

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