Dual accumulator hydraulic flotation system for crop harvester
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United States of America Patent
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Oct 12, 1999
Grant Date -
N/A
app pub date -
Jul 17, 1997
filing date -
Jul 17, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The hydraulic flotation circuit for the header of a windrower or other harvester utilizes a pair of precharged gas accumulators that are always in open communication with the flotation cylinders of the circuit. One of the accumulators is set at a relatively high precharge pressure, while the other is set at a much lower precharge pressure. If the header chosen for attachment to the harvester is relatively heavy, the accumulator with the higher precharge pressure provides the flotation bias, while if the header is relatively light, the accumulator having the lower precharge pressure comes into play.
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Cited Art Landscape
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