Independently powered knotter and needle drive arrangement for a large rectangular baler
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United States of America Patent
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Apr 27, 2004
Grant Date -
Jul 3, 2003
app pub date -
Jan 2, 2002
filing date -
Jan 2, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A drive arrangement for controlling the tying function of a large rectangular baler includes a knotter drive shaft having a drive member mounted on it for free rotation. A one-way clutch is connected between the drive member and the drive shaft for rotating the drive shaft only when the drive member is rotated in a first direction. The drive member has an elongate flexible element associated therewith and is driven in the first direction by retraction of an extensible and retractable hydraulic motor having its rod end coupled to one end of the flexible element, the other end of the flexible element being coupled to a spring that stores energy only when the hydraulic motor is retracted. At the end of the tying function, the hydraulic motor is extended to its beginning position, the loaded spring then taking up the slack in the flexible element and the one-way clutch then free-wheeling.
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