Hydraulic pick
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United States of America Patent
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Jul 29, 2014
Grant Date -
Aug 5, 2010
app pub date -
Jul 8, 2008
filing date -
Jul 9, 2007
priority date (Note) -
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Abstract
A hydraulic pick has a supporting body with a piston and a piston rod fixedly positioned in the supporting body. A working tool is driven by a short, axially rigid striking pin, guided in a bushing. A pressure transformer cylinder and an equalizing chamber are formed between the piston rod and a pressure transformer piston. The striking pin is driven by a working fluid under pressure, which is distributed by a system of channels in the piston rod.
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