Variable precharge accumulator for agricultural header
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United States of America Patent
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-
Jan 3, 2017
Grant Date -
Apr 21, 2016
app pub date -
May 2, 2013
filing date -
May 2, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A harvesting header for use with a crop harvesting machine has a feederhouse interface and a header frame providing structural support for the harvesting header. A pivotable connection between the feederhouse interface and the header frame enable the header frame to pivot with respect to the feederhouse interface. At least one hydraulic ram connects between the feederhouse interface and the header frame to pivot the harvesting header on the feederhouse interface. A hydraulic supply provides pressurized hydraulic fluid to the hydraulic ram. An accumulator assembly fluidically connects between the hydraulic supply and the at least one hydraulic ram. The accumulator assembly has a precharge fluid/gas interface between a gas chamber and the hydraulic supply, and a working fluid/gas interface between the gas chamber and the at least one hydraulic ram.
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