HYDRAULIC HAMMER HAVING SELF-CONTAINED GAS SPRING
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United States of America Patent
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Oct 6, 2016
app pub date -
Apr 6, 2015
filing date -
Apr 6, 2015
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Abstract
A gas spring is disclosed for use with a hammer. The gas spring may have a body with a central axis, and a bore aligned with the central axis and extending to at least one open axial end of the body. The gas spring may also have a plurality of gas chambers fully enclosed by the body and isolated from each other. The bore may have a flexible annular wall in communication with the plurality of gas chambers.
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