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2016
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Invention
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Enhanced lateral chipping in deep hole drilling. Percussive drilling hammer assembly (20) arrange... |
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Invention
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Improved oil recovery by pressure pulses. Method and device for improved recovery of oil from sub... |
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Invention
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Percussive hammering assembly. A percussive hammering assembly comprises a tool assembly (24, 25)... |
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2014
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Invention
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Reciprocating device with ferrofluid-lubricated sealing. Reciprocating device comprising reciproc... |
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2007
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Invention
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Reciprocating electrical machine.
Method for transforming energy in a reciprocating electric mac... |
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Invention
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Reciprocating electric machine. Method for transforming energy in a reciprocating electric machin... |
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2005
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Invention
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Working machine with an electromagnetic converter. Machine with an electromechanical converter, w... |
