Automatic hitch device

Details Automatic hitch device Automatic hitch device

1981-12-30

1984-02-14

Pekar, John A.

Land vehicles

Wheeled

Articulated vehicle

280515, 280479A, 172248, B60D 104

Patent

active

044312075

ABSTRACT:
An automatic hitch device for use on a tractor with a three-point hitch is disclosed. The device allows a tractor operator to engage or disengage a tow vehicle without leaving the tractor. Two fail-safe mechanisms are disclosed which prevent inadvertent disengagement of the tow vehicle. Structure for transmitting the towing load to the tractor drawbar is described. A hydraulic cylinder is used to operate a hitch pin. An alignment spring which helps direct the hitch pin into the tow vehicle hitch also relieves lateral force on the hydraulic cylinder. Co-operation between the fail-safe mechanisms and manual disengagement of the fail-safe mechanisms are also described.

REFERENCES:
patent: 2254566 (1941-09-01), Cornell
patent: 2635890 (1953-04-01), Schwartz
patent: 2983523 (1961-05-01), Kienzle
patent: 4015855 (1977-04-01), Murray

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