The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Jan. 17, 2006
Shuji Ueki, Chuo-ku, JP;
Hirohumi Doi, Tamano, JP;
Shogo Miyajima, Akishima, JP;
Kenzo Hasegawa, Yokohama, JP;
Hiroshi Satoh, Fujisawa, JP;
Shuji Ueki, Chuo-ku, JP;
Hirohumi Doi, Tamano, JP;
Shogo Miyajima, Akishima, JP;
Kenzo Hasegawa, Yokohama, JP;
Hiroshi Satoh, Fujisawa, JP;
Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, JP;
Tsurumi Seiki Co., Ltd., Kanagawa, JP;
Dai-Ichi Electric Co., Ltd., Kanagawa, JP;
Abstract
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. A winding mechanism with tension control function includes a reversibly rotatable liquid-pressure motor rotating a drum having a wire wound therearound, a liquid-pressure pump coupled directly with the liquid-pressure motor and supplying hydraulic oil, and an electric motor rotating to drive the liquid-pressure pump. The winding mechanism further includes a control unit controlling a torque of the electric motor based on a variation in load current of the electric motor and winding off or winding up the wire to keep the tension of the wire at a set value.