System for temporary immersion of submerged buoy for protecting passive fishing machine utilized for e.g. profession environment, has actuator driven by electric current to temporarily increase distance between permanent magnets

摘要

The system has permanent magnets (7, 8) cooperating through a sealed wall (6), and a linear actuator consisting of a wire shape memory alloy (12) and driven by electric current to temporarily increase distance between the permanent magnets for drastically reducing strength of attractions for permitting release of a submerged buoy (1). A transmission device consists of a bar (5) formed on a single support (4), where the permanent magnets consist of ferromagnetic properties. The support is designed as a buoy rope that is connected to the submerged buoy.