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1. 发明授权

US5526624A Method of laying roofing felt and means therefor 失效
标题翻译：铺设屋顶毡的方法及其手段
公开(公告)号：US5526624A
公开(公告)日：1996-06-18
申请号：US295863
申请日：1994-10-13
申请人： Bo Berg
发明人： Bo Berg
IPC分类号： B29C65/00 , B29C65/36 , E04D5/14 , E04D15/04 , E04B2/00
CPC分类号： E04D15/04 , B29C65/364 , B29C65/3648 , B29C65/3676 , B29C66/1122 , B29C66/43 , B29C66/80 , B29C66/81811 , B29C66/8362 , B29C66/8652 , B29C66/974 , E04D5/14 , E04D5/142 , E04D5/149 , B29C65/3632 , B29C65/3668 , B29C66/435 , B29C66/91221 , B29K2095/00 , B29L2009/00 , B29L2031/108
摘要： Roofing felt containing bitumen which is solid at ambient temperature and soft at an increased temperature is laid on roofs, the roofing felt having pieces with end edges and the method practiced by utilizing a heat emitting member in the form of a metal strip with a number of openings in it for penetration of softened bitumen. The metal strip is provided adjacent a first end edge of a first piece of roofing felt, and the first end edge of the first piece of roofing felt is overlapped with a second end edge of a second piece of roofing felt so that the metal strip engages both of them. A variable magnetic field is applied to the joint area to induce a current of sufficient strength to cause the metal strip to be heated to a temperature sufficient to soften the bitumen of both the pieces of roofing felt so that softened bitumen flows into the openings in the metal strip. After termination of the magnetic field the softened bitumen is cooled so that a tight continuous overlap joint is provided between the felt pieces. Typically while the bitumen is still softened a compression force is applied to the topmost pieces of felt to assist in forcing softened bitumen into and through the openings, such as by rolling a roller over the joint area.
摘要翻译： PCT No.PCT / SE92 / 00146 Sec。 371日期：1994年10月13日 102（e）日期1994年10月13日PCT 1991年3月10日PCT公布。公开号WO93 / 18247 日期：1993年9月16日。含有在环境温度为固体且在升高的温度下为软的沥青的铺放毡被放置在屋顶上，屋顶毡具有具有端部边缘的块，并且该方法通过利用以下形式实现的散热构件：在其中具有许多开口的金属带，用于渗透软化的沥青。金属条被设置在第一件屋顶毡的第一端边缘附近，并且第一件屋顶毡的第一端边缘与第二件屋顶毡的第二端边缘重叠，使得金属带接合两个都。将可变磁场施加到接合区域以引起足够强度的电流，以使金属带被加热到足以软化两个屋顶毡的沥青的温度，使得软化的沥青流入到金属条。在磁场终止之后，软化的沥青被冷却，使得在毡片之间提供紧密连续的重叠接头。通常，当沥青仍然软化时，压缩力被施加到最顶层的毡上，以帮助软化沥青进入和穿过开口，例如通过在接合区域上滚动辊子。

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