Tractor power lift mechanisms
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United States of America Patent
Stats
-
Jun 1, 1982
Grant Date -
N/A
app pub date -
Jun 9, 1980
filing date -
Jun 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tractor hydraulic power lift mechanism has a known manually adjustable flow control valve for regulating the rate of lowering an implement. However, when the valve is so adjusted that a heavy ground-working implement is lowered to ground level at a rate slow enough not to cause damage, the implement is then very slow to penetrate the ground to the desired working depth. A manually operable overriding mechanism preferably actuated by the main hand lever of the power lift mechanism is therefore provided to enable the valve to be moved temporarily into its fully open position and allowed to return to its adjusted position. The overriding mechanism is operated as the implement reaches ground level and released when it reaches its working depth.
First Claim
Family
International Classification(s)
Cited Art Landscape
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