WORKING APPARATUS, IN PARTICULAR EXCAVATOR OR MACHINE FOR MATERIAL HANDLING
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United States of America Patent
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Issued Date -
Nov 22, 2012
app pub date -
May 16, 2012
filing date -
May 18, 2011
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Abstract
The present disclosure shows a working apparatus, in particular an excavator or a machine for material handling, having an element movable via at least one hydraulic working cylinder, wherein at least one energy recovery cylinder is provided for recovering energy from the movement of the movable element, said energy recovering cylinder being filled with gas at the base side and having an annular space filled with a medium. In this respect, a flow restricting element is provided which restricts the flow of the medium from the annular space on a sudden moving out of the piston rod.
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