Spring means for device for working sheet-like material
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United States of America Patent
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Sep 13, 2016
Grant Date -
Oct 1, 2015
app pub date -
Sep 24, 2013
filing date -
Oct 18, 2012
priority date (Note) -
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Abstract
The invention relates to a device for working sheet-like material, such as a press brake for bending steel sheet. The device includes: a frame; two, relative to each other movable, substantially parallel beams for working the sheet-like material, which beams are connected to the frame; driving means for driving the substantially parallel beams away or towards each other; at least one spring means, connected at a horizontal position along said beams for urging the beams away from each other; wherein the spring means have a spring constant that is adjustable.
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