发明名称 |
WELD JOINT FOR THERMOPLASTIC PIPES |
摘要 |
A welded joint for plastic pipe is formed by apparatus including a sleeve (6) which is placed over the place where the pipes are joined and a heating mat (3) which is inserted between the sleeve and the pipes. The heating mat (3) and the sleeve (6) are provided with gear-tooth systems (4, 5, 114, 115) which engage each other in the assembled condition of the device. Consequently, the surfaces of the ends of the heating mat (3) and the sleeve (6) which are in contact are circumferentially extended, resulting in a satisfactory welded joint, even where large pipe tolerances are involved. |
申请公布号 |
EP0035750(A3) |
申请公布日期 |
1981.09.23 |
申请号 |
EP19810101568 |
申请日期 |
1981.03.05 |
申请人 |
GEORG FISCHER AKTIENGESELLSCHAFT |
发明人 |
REICH, FRITZ;THALMANN, ALFRED |
分类号 |
F16L47/02;B29C65/00;B29C65/34;F16L47/03 |
主分类号 |
F16L47/02 |
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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