发明名称 |
Method of making a well screen |
摘要 |
Fittings and methods for manufacturing fittings for piping are disclosed. The fittings are assembled from three identical molded pieces joined along longitudinal edges. Interfitting pieces form the joints between the sections and serve to draw the sections together during assembly and ensure roundness of the fitting. The technique is especially useful for the manufacture of fittings such as well screens, of synthetic polymeric materials.
|
申请公布号 |
US4310372(A) |
申请公布日期 |
1982.01.12 |
申请号 |
US19790031522 |
申请日期 |
1979.04.19 |
申请人 |
CERTAIN-TEED CORPORATION |
发明人 |
JANSSEN, KERMIT W.;MITCHELL, ANDREW |
分类号 |
B01D29/01;B23P15/00;B29C65/00;B29C65/56;E21B43/08;F16L37/252;(IPC1-7):B29C27/02 |
主分类号 |
B01D29/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|