Blockage removal apparatus and method
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United States of America Patent
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Apr 7, 2015
Grant Date -
Jul 26, 2012
app pub date -
Sep 28, 2010
filing date -
Sep 28, 2009
priority date (Note) -
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Abstract
The invention provides a method and apparatus for removing a blockage from a fluid conduit. An apparatus comprises a first portion containing a fluid volume separated from the fluid conduit via a controllable valve. The valve is cyclically opened and closed such that a pressure differential between the first portion and the fluid conduit causes a series of pressure pulses in the fluid conduit. The pressure differential is regulated to control the amplitude of the pressure pulses of the series.
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