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公开(公告)号：US4537576A
公开(公告)日：1985-08-27
申请号：US631162
申请日：1984-07-16
摘要： An educational book providing interaction between graphic information contained on reference elements rotatably attached to a base leaf and a second set of graphic information contained on apertured leaves. The apertured leaves superimpose the base leaf and reference elements, such that the apertures are visually aligned with the reference elements. The second set of graphic information areas are juxtaposed with respect to the apertures of the leaves to combined with the graphic information of the reference elements visible through said apertures. To maintain this alignment, the apertured leaves and base leaf are rotatably bound together at one end by a binding mechanism.
摘要翻译： 提供包含在可旋转地附接到基础叶片的参考元件上的图形信息与包含在有孔叶片上的第二组图形信息之间的交互的教育书籍。 有孔的叶片叠加基部叶片和参考元件，使得孔眼与参考元件目视对准。 第二组图形信息区域相对于叶片的孔并置，与通过所述孔可见的参考元件的图形信息相结合。 为了保持该对准，有孔的叶片和基底叶片在一端通过结合机构可旋转地结合在一起。
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公开(公告)号：US5951591A
公开(公告)日：1999-09-14
申请号：US18412
申请日：1998-02-04
申请人： Bruce Roberts
发明人： Bruce Roberts
CPC分类号： A61F5/02
摘要： A mobile back mounted supporting device for relieving pressure off of the back of a person who has to endure frequent bending. This device permits a wearer to bend over and remain parallel to the ground for extended periods of time without discomfort. It allows maximum movement for the operator since the operating parts do not get in the way. This device consists of a frame to which a chest harness, belt clip, and leg extensions are attached. The chest harness is worn by the worker and is supported by a system of elastic cord and pulleys. The harness pulls up on the upper body as the worker bends forward and thus provides support. The farther the wearer bends forward, the more tension is placed on the cords, and thus more support is given to the back.
摘要翻译： 一种移动式后支撑装置，用于缓解不得不经受弯曲的人的背部的压力。 该装置允许佩戴者弯曲并保持平行于地面延长的时间段而不会不适。 它允许操作员的最大运动，因为操作部件不妨碍。 该装置由一个框架组成，胸部线束，皮带夹和腿部延伸部连接到该框架上。 胸前线束由工人佩戴，并由弹性绳和滑轮系统支撑。 当工作人员向前弯曲时，线束拉到上身，从而提供支撑。 穿着者向前弯曲的越远，绳索上的张力就越大，因此对背部的支撑越多。
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