To provide a winding mechanism and a trawling apparatus capable of eliminating an excessive tension or slack generated in a wire wound around a drum and keeping the tension or wire length of the wire constant.
US Patent 07866630 Winding mechanism with tension control function and trawling apparatusUS Patent 7866630 Winding mechanism with tension control function and trawling apparatus
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Patent Number
07866630
Patent Number
7866630
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