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US 3,941,264 AGranted
Self-loading trailer for tractors
OwnerJulio Cesar Santos da Silva Bentoinventor
Life of this patent
Estimating the term…
Abstract
A self-loading trailer includes two U-shaped frames nested one into the other and pivoted by means of two coaxial pins. The inside frame functions as load forks and the outside frame functions as a lever. The outside frame has ground engaging wheels toward the rear thereof and is connectable at the front end to the lift bars of a tractor hitch. Actuation of the lift bars raises and lowers the load forks.
Claims5
A self-loading trailer to couple with farm tractors, having hydraulically moved rear bars comprising, in combination, two mechanical frames articulated together and forming a pivot;
- a tractor rear towing device;
- one of the frames defining a horizontal load plan and extending forward to couple with said tractor rear towing device;
- the other frame comprising a multiplying force lever of second order and supported on the ground on its rear end, said lever being actuated on its front end by the tractor's hydraulically moved rear bars and applying the multiplied tractor hydraulic force between its two ends to the first frame on said pivot.
Dependencies are inferred from the claim text.