HIGHER EFFICIENCY PELAGIC TRAWL DOOR CONSTRUCTION EMPLOYING UNIVERSALLY AVAILABLE MATERIALS AND METHODS
    1.
    发明公开

    公开(公告)号:EP1819218A1

    公开(公告)日:2007-08-22

    申请号:EP05806018.7

    申请日:2005-11-01

    申请人: Candis EHF.

    IPC分类号: A01K73/045

    CPC分类号: A01K73/045

    摘要: A trawl door for pelagic fishing comprises an accurately shaped main deflector portion (24, 25) provided with a leading edge lift enhancing structure constituted by a plurality of slats (20, 22) which form leading edge slats. At least the main deflector portion, as preferably also the slats are formed of plate metal for ease of construction. The preferred embodiment is a V-shaped trawl door made up of two sections (28, 29) of door.

    HIGH SPEED, INCREASED HYDRODYNAMIC EFFICIENCY, LIGHT-WEIGHT MOLDED TRAWL DOOR AND METHODS FOR USE AND MANUFACTURE
    2.
    发明公开
    HIGH SPEED, INCREASED HYDRODYNAMIC EFFICIENCY, LIGHT-WEIGHT MOLDED TRAWL DOOR AND METHODS FOR USE AND MANUFACTURE 审中-公开
    形光高速剪切董事会增加的流体动力学性能和使用方法和PROCESS

    公开(公告)号:EP1778006A2

    公开(公告)日:2007-05-02

    申请号:EP05759016.8

    申请日:2005-07-18

    申请人: Candis EHF.

    IPC分类号: A01K73/045

    CPC分类号: A01K73/045

    摘要: A trawl door having enhanced and rather high efficiency, lightness of weight in water and ease of manufacture. The trawl door preferably includes at least one slat and preferably two slats (6, 7) disposed forward of the leading edge (31) of a single main deflector body (2), and the main deflector has a profile wherein: (I) the outer side surface (28) of said main deflector body exhibits greater camber than does the inner side surface (29) of said main deflector body; (II) the thickest part of the profile of said main deflector body is located front of center; and (III) the outer side surface (28) is convex and the inner side surface (29) is concave. In one aspect the trawl door of the invention including at least a synthetic portion, preferably a mixture of a polyamide and an elastomer, whereby the synthetic material forming the at least a synthetic portion of the trawl door receives impacts fracture free.