Vehicle-supported three-point coupling and position responsive f

Details Vehicle-supported three-point coupling and position responsive f Vehicle-supported three-point coupling and position responsive f

1980-02-11

1983-07-19

Stouffer, Richard T.

Earth working

Automatic power control

172445, 280446A, A01B 6310

Patent

active

043939422

ABSTRACT:
The invention discloses a "three-point" coupling suitable for use both at the front and at the rear of an industrial, agricultural, public works or forestry vehicle, e.g., a tractor.
To each bracket of a crossbar attached to a tractor there are pivoted on one side, the rod of a jack and on the other hand firstly a traction rod and secondly one end of a device of adjustable length, the other end of which is pivoted to the associated bar. The two jacks are connected mutually and to a common hydraulic energy source, and the stroke of each piston can be limited in order to determine the final vertical position of the bars by a shutter block carried by one of the jacks and actuated by an adjustable stop fitted on a rod integral with the rod of the jack coming into contact with an actuating push rod of the block.

REFERENCES:
patent: 2822738 (1958-02-01), Smith
patent: 3078930 (1963-02-01), Foote
patent: 3145781 (1964-08-01), Rogler
patent: 3310123 (1967-03-01), Abbott
patent: 3750757 (1973-08-01), Saetti
patent: 4125271 (1978-11-01), Wiboltt et al.

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