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    • 8. 发明授权
    • Backless mobile guitar strap
    • 无背移动吉他表带
    • US08269085B1
    • 2012-09-18
    • US13027164
    • 2011-02-14
    • Paul C. Darbon
    • Paul C. Darbon
    • G10D3/00
    • G10G5/005
    • An instrument shoulder strap device and method for use with musical instruments, wherein the device comprises: a backless shoulder strap; the shoulder strap has an adjustable front strap; an U shaped mounting bracket, which is attached to the shoulder strap; the U shaped mounting bracket has slidable connecting means for connecting an instrument to the shoulder strap; and wherein the instrument has a pivot axle member having attachment means for attaching the member to the instrument, thereby allowing a user the ability to connect the pivot axle member to the U shaped mounting bracket for attaching and detaching the instrument to the shoulder strap.
    • 一种用于乐器的乐器肩带装置和方法,其中所述装置包括:无背肩带; 肩带有一个可调节的前带; U形安装支架,其安装在肩带上; U形安装支架具有用于将仪器连接到肩带的可滑动连接装置; 并且其中所述仪器具有枢转轴构件,所述枢转轴构件具有用于将所述构件附接到所述仪器的附接装置,从而允许使用者将所述枢转轴构件连接到所述U形安装支架以将所述器械附接和分离到所述肩带上的能力。
    • 9. 发明授权
    • Methods and devices for improving efficiency of wind turbines in low speed sites
    • 提高低速风力发电机组效率的方法和装置
    • US07789624B2
    • 2010-09-07
    • US11800254
    • 2007-05-03
    • Kari AppaSuri Appa
    • Kari AppaSuri Appa
    • F03D7/02
    • F03D7/0224F03D1/025F05B2240/60F05B2250/28F05B2250/281F05B2260/77Y02E10/723
    • The present invention is for an apparatus and method for a passive pitchable device for wind turbines comprising: a camshaft having cam grooves engraved; a cylindrical shell; an axial compression spring; said blade assembly and said cylindrical shell are fastened together by screws; a plurality of balls that roll along said cam grooves, and convert the axial displacement to rotation or pitch angle; and wherein the passive pitchable device ensures said blades are at the optimum angle of incidence in the stationary position; as the rotor turns, the net force between centrifugal force on said blade and the resistant force from said compression spring causes the device to move axially outward while rotating to adjust the pitch of the rotor blade so that angle of incidence is optimal for the given wind speed; as the wind speed exceeds the design speed and the centrifugal force on the rotor blade continues to increase, the device continues the move axially outward while rotating in the opposite direction as to adjust the pitch of the blade in the opposite direction so that the rotor performance is controlled and severe dynamic loads are avoided.
    • 本发明涉及一种用于风力涡轮机的被动可调节装置的装置和方法,包括:凸轮轴,其具有雕刻的凸轮槽; 圆柱形外壳; 轴向压缩弹簧; 所述刀片组件和所述圆柱形壳体通过螺钉紧固在一起; 沿着所述凸轮槽滚动的多个滚珠,并将轴向位移转换成旋转角或俯仰角; 并且其中所述被动可调节装置确保所述叶片在所述静止位置处于最佳入射角; 当转子转动时,所述叶片上的离心力和来自所述压缩弹簧的抵抗力之间的净力使得装置在旋转的同时向外移动以调节转子叶片的桨距,使得入射角对于给定的风是最佳的 速度; 当风速超过设计速度并且转子叶片上的离心力继续增加时,装置沿相反方向旋转而继续向外移动,以便沿相反方向调节叶片的间距,使得转子性能 是受控的,避免了严重的动态负载。