专利名称：Seamless screen videowall 发明人：Ira McNabb
申请号：US09580887一到十成语
申请日：20000530
公开号：US06550521B1
公开日：
橘子的英语怎么写20030422
专利内容由知识产权出版社提供
专利附图：
球缺体积计算公式
摘要：A system for suspending a video projection screen includes the principles of physical independence, or a somewhat “floating system,” employing at least some thermal expansion matching, centroid expansion dimension splitting combined with front to back progressive dimensional freedom, as well as corner gusts and rear corner
brackets which contribute to the overall independence of each element of the system. The system of support provide clearance space from the rear of the system and which progressively provides a final touching clearance at the projection end of the system which has the minimum spacing between adjacent acrylic members to provide a nearly amless system. In one embodiment, an expan of typical acrylic screen material which may be either ca, such as a Fresnel, or lenticular-fresnel material, or extruded, such as a diffusion material, having a thermal expansion of about 34×10inch/inch/° F. A polycarbonate strip of material is attached to the four edges of the acrylic screen, and to an extruded polycarbonate frame, preferably black and preferably having a thermal expansion coefficient substantially similar to that of the acrylic screen material, the polycarbonate frame having a thermal expansion coefficient such as about
我是中国人教案38×10inch/inch/° F.
申请人：VISUAL STRUCTURES, INC.
代理人：Curtis L. Harrington红烧素鸡的做法
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