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    • 1. 发明授权
    • Seismic sources
    • 地震源
    • US5131488A
    • 1992-07-21
    • US303093
    • 1989-01-26
    • Michael A. GreenNeville G. W. CookThomas V. McEvillyErnest L. MajerPaul A. Witherspoon
    • Michael A. GreenNeville G. W. CookThomas V. McEvillyErnest L. MajerPaul A. Witherspoon
    • G01V1/40G01V1/143G01V1/155G01V11/00
    • G01V1/155G01V11/005
    • Apparatus is described for placement in a borehole in the earth, which enables the generation of closely controlled seismic waves from the borehole. Pure torsional shear waves are generated by an apparatus which includes a stator element fixed to the borehole walls and a rotor element which is electrically driven to rapidly oscillate on the stator element to cause reaction forces transmitted through the borehole walls to the surrounding earth. Logitudinal shear waves are generated by an armature that is driven to rapidly oscillate along the axis of the borehole relative to a stator that is clamped to the borehole, to cause reaction forces transmitted to the surrounding earth. Pressure waves are generated by electrically driving pistons that press against opposite ends of a hydraulic reservoir that fills the borehole. High power is generated by energizing the elements at a power level that causes heating to over 150.degree. C. within one minute of operation, but energizing the elements for no more than about one minute.
    • 描述了用于放置在地球钻孔中的装置,这使得能够从井眼产生严格受控的地震波。 纯扭转剪切波由包括固定在钻孔壁上的定子元件和电驱动的转子元件的装置产生,该转子元件在定子元件上快速振荡,以使反作用力通过钻孔壁传递到周围的地球。 纵向剪切波由电枢产生,该电枢被驱动以相对于被夹持在钻孔上的定子沿着钻孔的轴线快速振荡,以产生传递到周围地球的反作用力。 通过电动驱动活塞产生压力波,该活塞压在填充钻孔的液压储存器的相对端。 通过在一分钟的操作期间使加热到150℃以上的功率水平激发元件而产生高功率,但是对元件通电不超过约1分钟。
    • 3. 发明授权
    • Combination hurricane shutter and security grill
    • 组合飓风快门和安全格栅
    • US4384436A
    • 1983-05-24
    • US300894
    • 1981-09-10
    • Michael A. Green
    • Michael A. Green
    • E06B9/01E06B3/26
    • E06B9/01
    • A combination of a hurricane shutter and security grill intended for use in conjunction with a window of a commercial or residential building. The security grill comprises metallic bars of various shapes and dimensions which are combined in distinctive patterns in order to enhance the appearance of the building while allowing minimum obstruction to light rays. The security grill is located squarely in front of the window on the exterior side by means of ornamental brackets which are fixed to the longitudinal boundaries of the security grill and the structural side of the building. L-shaped brackets with functional or ornamental facing are fastened to the top and bottom latitudinal bars and provide channels to facilitate the insertion of a shutter board which completely encloses the security grill and the guarded window. The shutter board can be easily and quickly fastened to the front of the brackets with metallic wood screws in order to provide immediate protection in the advent of a surprise tropical storm or hurricane.
    • 飓风百叶窗和安全格栅的组合,旨在与商业或住宅建筑的窗户结合使用。 安全格栅包括各种形状和尺寸的金属条,它们以不同的图案组合,以便增强建筑物的外观,同时允许对光线的最小阻碍。 安全格栅通过固定在安全格栅和建筑物的结构侧的纵向边界的装饰托架正好位于窗外的外侧的正前方。 具有功能或装饰面的L形支架被固定到顶部和底部横向杆,并且提供通道以便于插入完全包围安全格栅和防护窗的快门板。 快门板可以用金属木螺丝轻松快速地固定在支架的前部,以便在惊喜的热带风暴或飓风的到来提供即时保护。