发明名称 |
METHOD FOR FORMING FLANGES ON PLASTIC PIPE |
摘要 |
A method is shown for forming a flange on an end of a plastic pipe liner of the type used to line a tubular member. A reinforced disc having a rigid portion and an elastomeric portion is placed about the liner exterior and moved into position flush with the flanged end of the tubular member. A retaining ring is placed about the reinforced disc and the disc and liner exposed end are heated to render the materials malleable. A forming unit is then used to apply force to the liner to flow the liner into a reformed shape having a greater external diameter than the remainder of the liner. The forming operation also bonds the reinforced disc to the reformed liner end to further resist any tendency of the liner end to be retracted into the interior of the tubular member.
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申请公布号 |
US5094795(A) |
申请公布日期 |
1992.03.10 |
申请号 |
US19900513904 |
申请日期 |
1990.04.24 |
申请人 |
MCMILLAN, JAMES S.;TARSHA, SAMA'AN |
发明人 |
MCMILLAN, JAMES S.;TARSHA, SAMA'AN |
分类号 |
B29B13/02;B29C57/00;B29C63/34;B29C70/84;F16L23/024;F16L23/026;F16L23/028 |
主分类号 |
B29B13/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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