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    • 10. 发明公开
    • Frame apparatus
    • 拉赫曼。
    • EP0331853A1
    • 1989-09-13
    • EP88312386.1
    • 1988-12-29
    • Cochrane, Ian Robert
    • Cochrane, Ian Robert
    • A47G1/08G09F1/12
    • G09F1/12A47G1/08
    • The invention comprises frame apparatus that is usable to maintain a poster (7) or other area of sheet material in a substantially taut condition by gently stretching the same. The figure illustrates an embodiment in which the canvas (7) or the like is stretched by helical compression springs (4) in only one direction. An other embodiment is provided in which said canvas or the like is stretched by springs in two coplanar and relatively perpendicular directions. The use of the invention will allow paper and other sheet materials to be displayed in such a way that any small changes in dimensions due to ageing or changes in ambient conditions are automatically compensated for by expansion or contraction of the frame apparatus.
    • 本发明包括框架装置,其可用于通过轻轻地拉伸其来维持海报(7)或其他区域的片材在基本拉紧的状态。 该图示出了其中帆布(7)等仅在一个方向上被螺旋压缩弹簧(4)拉伸的实施例。 提供了另一个实施例,其中所述帆布或类似物在两个共面和相对垂直的方向上被弹簧拉伸。 本发明的使用将允许以这样的方式显示纸张和其它纸张材料,即由于老化或环境条件的改变而导致的尺寸的任何小的变化通过框架装置的膨胀或收缩被自动补偿。