Method and system of depth triggers for marine geophysical survey cable retriever systems
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United States of America Patent
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Jun 25, 2013
Grant Date -
Jan 31, 2013
app pub date -
Jul 29, 2011
filing date -
Jul 29, 2011
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Abstract
Depth triggers for marine geophysical survey cable retriever systems. At least some of the illustrative embodiments are methods including causing a submerged geophysical survey cable to surface. The cause may include: moving a piston within a cylinder of a housing coupled to the geophysical survey cable, the moving of the piston responsive to pressure exerted on a face of the piston as the geophysical survey cable reaches or exceeds a predetermined depth, wherein the movement of the piston overcomes a force created by interaction between two materials, the force latches the piston in place at depths above the predetermined depth; and responsive to the piston overcoming the force that latches the piston deploying a mechanism that makes the geophysical survey cable more positively buoyant, the deploying responsive to movement of the piston.
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