Land vehicles – Wheeled – Articulated vehicle
Patent
1981-06-02
1984-10-09
Mitchell, David M.
Land vehicles
Wheeled
Articulated vehicle
138 44, 280456A, 280460A, 280461A, 280504, 280508, 280510, B60D 100
Patent
active
044757417
ABSTRACT:
In the case of the adjustable upper link in a three-point suspension device for a tractor, comprising a locking device in the form of a line fitted with a shut-off device and connecting together the two end-faces of the hydraulic cylinder, the invention simplifies the operation of the device in that it may be adjusted effortlessly from the tractor-seat. This is achieved in that the shut-off device is in the form of a ball-valve having an axis secured to a forked actuating lever, and in that springs are provided to urge the said actuating lever towards the shut-off position. A scale provides the tractor-driver with an accurate indication of the setting of the link. The design of a tube accommodating one end of the piston-rod as a compressed-air chamber ensures automatic displacement of the piston in the hydraulic cylinder.
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Abstract of German Utility Model 78 37 172, dated Aug. 2, 1979.
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Mitchell David M.
Rice Kenneth R.
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