| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | BLOW MOLDED ARTICLES AND METHOD OF MAKING | PCT/US9814823 | 1998-07-14 | WO9902322A2 | 1999-01-21 | LIPNIARSKI DAVID J |
| A gate hingedly connected to a staircase. The gate hinge is blow-molded integrally with the gate body. A mounting post has on one portion a hinge pin for receiving the gate hinge, and the other portion has a pair of parallel resilient sheets for receiving an edge portion of the staircase. Two staircases are attached back-to-back by vertical flanges each of which is offset from a vertical center plane of the respective back wall portion and has a vertical surface which is co-planar with the vertical center plane. The corners of the staircase are individually height adjustable by internally threaded portions which receive threaded rods. The internal threads are formed as part of the blow-molding process. A hole to the interior of the staircase of other article is formed as part of the blow-molding process. | ||||||
| 62 | MOLDED COMPOSITE CLIMBING STRUCTURES UTILIZING SELECTIVE LOCALIZED REINFORCEMENT | PCT/US2008002215 | 2008-02-19 | WO2008100638A9 | 2008-10-16 | WEBBER STEPHEN N; ISHAM WILLIAM R |
| 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. | ||||||
| 63 | LIGHTWEIGHT COMPOSITE LADDER RAIL HAVING SUPPLEMENTAL REINFORCEMENT IN REGIONS SUBJECT TO GREATER STRUCTURAL STRESS | PCT/US2005028574 | 2005-08-12 | WO2006023365A2 | 2006-03-02 | ISHAM WILLIAM R; WEBBER STEPHEN N; LIECHTY JAMES K; STRONG BRENT A |
| 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. | ||||||
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