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    • 6. 发明授权
    • Otter board
    • 水獭板
    • US5265367A
    • 1993-11-30
    • US791445
    • 1991-11-13
    • Hiromi Kinoshita
    • Hiromi Kinoshita
    • A01K73/05A01K73/02
    • A01K73/05
    • Otter board which is provided with a means for adjusting net-mouth expanding force which can be driven by liftingrope thereby to freely vary said force. According to the first embodiment of the invention, said otter board is formed by biplane construction of board planemembers, and said means for adjusting the net-mouth expanding force comprises the outermost board plane member of said biplane construction that is variable in its angle of attck about a pivot provided in the biplane construction. According to the second embodiment of the invention, said means for adjusting the net-mouth expanding force comprises a through bore in a single otter board construction, said through holehaving a variable opening area by means of an oscillating member.
    • 水獭板设置有用于调节网口膨胀力的装置,该装置可由提升机驱动,从而自由地改变所述力。 根据本发明的第一实施例,所述水獭板由板平面构件的双平面结构形成,并且所述用于调节网口膨胀力的装置包括所述双平面结构的最外板平面构件,其在其角度上是可变的 关于在双翼飞机结构中提供的枢轴。 根据本发明的第二实施例,用于调节网嘴膨胀力的所述装置包括一个单一水獭板结构的通孔,所述通孔通过振动构件具有可变开口面积。