Top > Search of International Patents > TRAWL NET LAYER-BY-LAYER COLLECTING DEVICE

TRAWL NET LAYER-BY-LAYER COLLECTING DEVICE

Foreign code F120006908
File No. S2006-0796-C0
Posted date Oct 9, 2012
Country WIPO
International application number 2007JP057137
International publication number WO 2008/026339
Date of international filing Mar 30, 2007
Date of international publication Mar 6, 2008
Priority data
  • P2006-235932 (Aug 31, 2006) JP
Title TRAWL NET LAYER-BY-LAYER COLLECTING DEVICE
Abstract

Provided is a trawl net layer-by-layer collecting device for switching and opening/closing the net mouth of a trawl net lightly and autonomously. The trawl net layer-by-layer collecting device is constituted to comprise a frame (2) for drawing trawl nets (13a, 13b, 13c and 13d) vertically arranged and for mooring the net mouth edge of the upper net of the uppermost trawl net (13a) at its upper edge and the net mouth edge of the lower net of the lowermost trawl net (13d) at its lower edge, a pair of vertical bars (3) arranged on the two sides of the frame (2), sliders (12) slidably engaging at its two end portions with the vertical bars (3) for mooring the net mouth edges of the lower net of the upper trawl net and the upper net of the lower trawl net, net mouth opening/closing means (8) for retaining the sliders (12) at the upper end portions of the vertical bars (3)

and for releasing the retentions of the sliders one by one, and control means (9). The control means (9) includes a timer, and a storage medium stored with the drawing time period, for which the net mouth opening/closing means (8) is activated. The control means (9) is constituted to input a net drawing water depth from a bathometer and a drawing time period from the timer, and to activate the net mouth opening/closing means (8) in accordance with the set activation water depth stored in the storage medium and in response to the arrival of the predetermined net drawing time period.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGY,
  • HU, FUXIANG,
  • TOKAI, TADASHI,
  • OZEKI, YOSHIOKI,
  • KUBOTA, HIROSHI,
  • TOMATSU, CHIAKI,
  • INO, TETSURO
  • Inventor
  • HU, FUXIANG,
  • TOKAI, TADASHI,
  • OZEKI, YOSHIOKI,
  • KUBOTA, HIROSHI,
  • TOMATSU, CHIAKI,
  • INO, TETSURO
IPC(International Patent Classification)

PAGE TOP

close
close
close
close
close
close