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    • 6. 发明授权
    • Modular portable writing and projection system having variable curvature
    • 具有可变曲率的模块化便携式写入和投影系统
    • US09403400B2
    • 2016-08-02
    • US12860037
    • 2010-08-20
    • Michael McManusStephen SpencerDonald MacDonaldJohn CrowleyJoseph Ballay
    • Michael McManusStephen SpencerDonald MacDonaldJohn CrowleyJoseph Ballay
    • B43L1/00A47B97/04B43L1/08B43L1/10
    • B43L1/00A47B97/04B43L1/08B43L1/10
    • A modular, portable writing and projection system having a variable curvature is disclosed. The system uses dry erase boards, chalk or black boards, or other flexible panels having at least one writing surface. The panels have edges for joining to posts. The system combines panels to form a large, modular system for use at meetings, gatherings or other assemblies. The system allows a large number of users to contribute to a presentation, and also allows users to view the presentation. Because the panels are flexible, the system may be curved, allowing more panels to be mounted, used, written on and viewed, within limited space. The panels may be used in either a convex or concave manner, i.e., curved in or curved out, as desired. The resistance of the panels to remaining in a curved state is overcome by feet on the posts and braking or holding devices on the feet.
    • 公开了具有可变曲率的模块化便携式书写和投影系统。 该系统使用干擦板,白垩或黑板或具有至少一个书写表面的其它柔性板。 面板具有用于连接到柱的边缘。 该系统将面板组合成一个大型的模块化系统,用于会议,集会或其他组件。 该系统允许大量用户贡献一个演示文稿,并允许用户查看演示文稿。 因为面板是柔性的,所以系统可以是弯曲的,允许在有限的空间内安装,使用,写入和查看更多的面板。 面板可以以凸或凹的方式使用,即根据需要弯曲或弯曲出来。 通过脚上的脚和脚上的制动或保持装置来克服面板保持在弯曲状态的阻力。
    • 9. 发明授权
    • Adjustable width frame member for wall openings
    • 用于墙壁开口的可调节宽度框架构件
    • US4541212A
    • 1985-09-17
    • US607508
    • 1984-05-07
    • Donald MacDonald
    • Donald MacDonald
    • E06B1/10E04C3/38E06B1/04
    • E06B1/10
    • This invention is an adjustable frame member or jamb for a wall opening and a method for making it. It consists of two side-by-side jamb members, a spring and a stop. The stop is attached to one jamb member in an overhanging or step-like relationship. The spring is inserted into the back of this member so that an elongated portion defines a slot with the overhanging portion of the stop. Narrow kerfs are appropriately let into the back of the jamb and the door stop for anchoring the arm portions of the spring. The second jamb member is slid into the slot defined by the stop and spring, where it is firmly gripped by the spring. By forming one mounting point for the spring in the back of the stop, a short lever arm is maintained to better resist any prying or dislodging forces applied against the spring caused by the other jamb member. The artical can conveniently be made by first attaching one edge of the stop to a jamb of the narrowest width expected in use. The jamb is severed into two pieces and the kerfs are simultaneously cut. An inlet zone into the jamb members in the area of the spring enables the assembly to have a flat back for rigid mounting against a framing stud.
    • 本发明是用于墙壁开口的可调节框架构件或侧柱及其制造方法。 它由两个并排的侧面成员组成,一个春天和一个停止。 站在一个悬挂或阶梯式的关系附加到一个jamb成员。 弹簧被插入该构件的后部,使得细长部分限定了具有止动件的伸出部分的狭槽。 狭窄的缝隙适当地放入侧柱的后部和用于锚定弹簧的臂部的门挡块。 第二侧柱构件滑入由止动件和弹簧限定的槽中,其中弹簧被牢固地夹紧。 通过在止挡件的后部形成用于弹簧的一个安装点,保持短的杠杆臂以更好地抵抗由另一个侧柱构件引起的施加在弹簧上的任何撬动或移动力。 可以方便地通过首先将停止物的一个边缘附接到预期使用的最窄宽度的侧栏来进行。 侧腿被切断成两片,同时切断缝。 在弹簧区域中进入侧壁构件的入口区域使得组件能够具有平坦的背面,用于刚性地安装在框架螺柱上。