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公开(公告)号:US5699838A
公开(公告)日:1997-12-23
申请号:US446459
申请日:1995-05-22
CPC分类号: B29C70/443 , B29C63/26
摘要: An apparatus and method for removing air from a tube to improve the impregnation of the tube with a curable resin or other viscous fluid used in cured-in-place pipe rehabilitation. Also, a perforated needle for use in vacuum impregnation and a method of evacuating air from a flexible tube, particularly a lining tube used for rehabilitation of underground conduits.
摘要翻译: 一种用于从管中除去空气以改善用固化树脂或固化管道修复中使用的其它粘性流体的管浸渍的装置和方法。 此外,用于真空浸渍的穿孔针以及从柔性管,特别是用于地下管道的修复的衬管抽真空的方法。