公开(公告)号：EP0900003B1

公开(公告)日：2003-02-26

申请号：EP97920603.4

申请日：1997-04-30

申请人： Larsen, Helgi

发明人： Larsen, Helgi

IPC分类号： A01K73/045

CPC分类号： A01K73/045

摘要： The invention relates to an otter board (20) which may be used for generating a spreading force in connection with trawl fishing. The otter board according to the invention comprises at least two foils (1-3) which are suspended between a number of longitudinally extending ribs (5, 6, 10, 17, 26, 27) in such a way that at least one tapered channel is formed in which the flow of water is passing through the otter board. The channels are curved and formed so that water is ejected at a high speed in relation to the towing speed in a direction slightly downwards and along a respective end section of an adjacent lower or intermediate foil extending from the outlets of the channels, whereby turbulence is prevented from occurring even at high angles of attack of the otter board.

摘要翻译： 本发明涉及一种可用于产生与拖网捕鱼有关的扩展力的水獭板（20）。 根据本发明的水獭板包括至少两个薄片（1-3），所述薄片（1-3）悬挂在多个纵向延伸的肋（5,6,10,17,26,27）之间，使得至少一个锥形通道 形成水在其中流过水獭板的水流。 通道弯曲并形成为使水相对于牵引速度以稍微向下的方向高速喷射并且沿着从通道的出口延伸的相邻的下箔片或中间箔片的相应的端部区段，由此湍流为 即使在水獭板的高攻角下也不会发生。

公开(公告)号：EP0900003A1

公开(公告)日：1999-03-10

申请号：EP97920603.0

申请日：1997-04-30

申请人： Larsen, Helgi

发明人： Larsen, Helgi

IPC分类号： A01K73

CPC分类号： A01K73/045

摘要： The invention relates to an otter board (20) which may be used for generating a spreading force in connection with trawl fishing. The otter board according to the invention comprises at least two foils (1-3) which are suspended between a number of longitudinally extending ribs (5, 6, 10, 17, 26, 27) in such a way that at least one tapered channel is formed in which the flow of water is passing through the otter board. The channels are curved and formed so that water is ejected at a high speed in relation to the towing speed in a direction slightly downwards and along a respective end section of an adjacent lower or intermediate foil extending from the outlets of the channels, whereby turbulence is prevented from occurring even at high angles of attack of the otter board.