公开(公告)号：US20060032705A1

公开(公告)日：2006-02-16

申请号：US10919420

申请日：2004-08-16

申请人： William Isham ,  Stephen Webber ,  James Llechty ,  A. Strong

发明人： William Isham ,  Stephen Webber ,  James Llechty ,  A. Strong

IPC分类号： E06C7/00

CPC分类号： E06C7/08 ,  B29C43/003 ,  B29C43/3642 ,  B29C70/202 ,  B29C70/443 ,  B29C2043/3644 ,  B29K2105/0029 ,  B29K2105/0854 ,  B29L2031/06 ,  B29L2031/745

摘要： A molding process, other than pultrusion, is used to manufacture composite ladder rails of non-uniform cross-sectional area and non-uniform strength throughout their lengths. Each ladder rail includes a structural fiber preform embedded in a cured polymeric resin. Fiberglass preforms are preferred because they are electrically non-conductive. Resin transfer molding processes, using either polyester or epoxy resins, are ideally suited for such manufacture. Vacuum-bagged, open-mold processes may also be used, as may be compression molding processes. Regions of the rails subject to greater stress during usage are strategically reinforced with additional structural fibers, and have greater cross-sectional area than regions subjected to lesser stress. The differential cross-sectional area permits the construction of ladders which are optimized for both strength and lightness of weight. Ladders of all types may be constructed with rails incorporating the invention.

摘要翻译： 不同于拉挤成型的成型工艺用于制造整个横截面积不均匀的复合梯子轨道和其整个长度上的不均匀强度。 每个梯子轨道包括嵌入固化的聚合物树脂中的结构纤维预制件。 玻璃纤维预制件是优选的，因为它们是非导电的。 使用聚酯或环氧树脂的树脂传递模塑工艺非常适合这种制造。 也可以使用真空袋，开模工艺，可以是压缩成型工艺。 在使用过程中承受更大应力的轨道区域用额外的结构纤维进行战略性增强，并且具有比具有较小应力的区域更大的横截面面积。 差异横截面面积允许对强度和重量轻度进行优化的梯子的构造。 所有类型的梯子可以用包含本发明的轨道构成。

公开(公告)号：US20070205053A1

公开(公告)日：2007-09-06

申请号：US11707642

申请日：2007-02-16

申请人： William Isham ,  Stephen Webber

发明人： William Isham ,  Stephen Webber

IPC分类号： E06C5/04

CPC分类号： B29C43/003 ,  B29C70/202 ,  B29C70/443 ,  B29C2043/3644 ,  B29K2105/0029 ,  B29K2105/0854 ,  B29L2031/06 ,  B29L2031/745 ,  E06C7/08

摘要： A method and system for fabricating molded composite support members for use in climbing structures, which molded composite support members comprise variable performance properties along a longitudinal length thereof. The variable performance properties are achieved or provided by selectively reinforcing one or more regions determined to be subject to greater stress, thus allowing a minimum amount of material to be used in other areas that will subject to less structural stress. Selective reinforcement is accomplished by adapting one or more regions of a primary composite material composition with a supplemental composite material composition, wherein the supplemental composite material composition increases the amount of composite material fibers within that particular region.

摘要翻译： 一种用于制造用于攀爬结构的模制复合材料支撑构件的方法和系统，所述模制的复合材料支撑构件包括沿其纵向长度的可变性能特性。 通过选择性地增强被确定为承受较大应力的一个或多个区域来实现或提供可变性能特性，从而允许在其将受到较小结构应力的其它区域中使用最少量的材料。 通过使主要复合材料组合物的一个或多个区域与补充的复合材料组合物相适应来实现选择性增强，其中补充的复合材料组合物增加该特定区域内的复合材料纤维的量。