PILE HAMMER
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Mar 20, 2015
filing date -
Mar 28, 2014
priority date (Note) -
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Abstract
A pile hammer includes a cylinder, a piston displaceably guided in the cylinder, and a striker displaceably guided in the cylinder. The striker is disposed underneath the piston in the operating position of the pile hammer. A combustion chamber is delimited axially by a face surface of the striker that lies in the interior of the cylinder and by a face surface of the piston. Using at least one fuel feed device a predetermined amount of fuel can be introduced into the combustion chamber during each work cycle. The piston has a cavity that is filled, at least in part, with a movable filler.
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