Land vehicles – Wheeled – Articulated vehicle
Patent
1976-01-12
1977-11-29
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Articulated vehicle
172446, 172667, 172679, 172741, B60D 114
Patent
active
040602540
ABSTRACT:
Apparatus for maintaining an implement which is coupled to a tool bar in a controlled position behind a prime mover, having a pair of rock arm devices each including a rod coupled to the bottom lift arms of the tractor's three-point hitch, each of the rods being rotatably received by a sleeve upon which is mounted a normally upright plate. Positioned a distance above the sleeve on the plate is a second rod extending rearwardly and rotatably received by a second sleeve. The second sleeve is rigidly secured to the tool bar by a bracket device. A cylinder and piston having one end of the cylinder pivotally fastened to the tool bar and the piston pivotally fastened to the nearest plate, with a rod coupling both plates together. As the piston expands and contracts relative to the cylinder, the tops of the plates are displaced in the same direction. The second sleeve will be displaced in the same direction as its plate, thereby causing the tool bar, which is coupled to the sleeves by the bracket assembly, to be displaced in the same direction, which will laterally displace the implement the same distance, relative to the prime mover.
REFERENCES:
patent: 1951376 (1934-03-01), Strandlund
patent: 2698563 (1955-01-01), Edwards
Pekar John A.
Peters Jr. Joseph F.
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