发明授权
- 专利标题： Method of cutting apertures in lining in underground pipes
- 专利标题（中）： 地下管道衬里切割孔的方法
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申请号： US669780申请日： 1984-11-09
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公开(公告)号： US4577388A公开(公告)日： 1986-03-25
- 发明人: Eric Wood
- 申请人： Eric Wood
- 申请人地址： GB1
- 专利权人： Insituform Intl Inc
- 当前专利权人： Insituform Intl Inc
- 当前专利权人地址： GB1
- 优先权： GBX8103660 19810206
- 主分类号： B23D21/02
- IPC分类号： B23D21/02 ; B23Q9/00 ; B26F1/38 ; F16L55/179 ; B23P17/00 ; B23C3/02 ; E03F3/06
摘要：
A method for re-establishing side connections to an underground pipe after the same has been lined with a rigid lining of synthetic resin is disclosed, and in the method a cutter of the unit located in the pipeline moves in accordance with a pre-programmed contour which matches the contour of the side connection, thereby effectively and quickly to re-establish the side connection.The pre-programmed arrangement may be generated by sensing the side connection profile prior to the lining operation.
公开/授权文献
- US5136106A Heterogeneous alkoxylation using anion-bound metal oxides 公开/授权日：1992-08-04
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