发明名称 |
Method for making strengthened porous pipe and resulting product |
摘要 |
For forming a perforated pipe a method is employed which includes winding on a mandrel having multiple spaced protrusions thereon angularly related strips arranged between the protrusions. These strips cooperatively define openings through which the protrusions extend. The strips are formed of fibres which are impregnated with a settable resin or plastic which combine with the fibres to form a tube adequate to resist a pressure of about 600 p.s.i. Because the protrusions are employed the fibres can be so impregnated as to be resin-rich. The openings may be screened with resin-poor granules arranged in vaulted configuration. A further strip may be wound around the foregoing arrangement to hold the granules against the resulting pipe.
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申请公布号 |
US4415613(A) |
申请公布日期 |
1983.11.15 |
申请号 |
US19810295640 |
申请日期 |
1981.08.24 |
申请人 |
MEDNEY, JONAS |
发明人 |
MEDNEY, JONAS |
分类号 |
B29C53/58;E03B3/18;E21B43/08;(IPC1-7):B32B31/00 |
主分类号 |
B29C53/58 |
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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