发明名称 METHOD OF MANUFACTURING A SELECTIVE ISOLATION SCREEN
摘要 A method of manufacturing a selective isolation screen includes steps of fitting a plurality of screen jackets (2) one by one on a base member (3), each of the screen jackets including a plurality of spacer members (4) extending in the longitudinal direction to be disposed, circumferentially spaced, on the base member and a wire (5) wound about the periphery of the spacer members with a predetermined gap, and welding the end portions of each screen jacket to the base member thereby fixing the screen jacket to the base member and also forming seal means and thus constituting a single unit screen. Difficulty in welding can thereby be avoided and location and state of mounting of sleeves can be visually checked. <IMAGE>
申请公布号 CA2086028(A1) 申请公布日期 1993.06.28
申请号 CA19922086028 申请日期 1992.12.22
申请人 NAGAOKA, TADAYOSHI;SPARLIN, DERRY D. 发明人 NAGAOKA, TADAYOSHI;SPARLIN, DERRY D.
分类号 E21B43/00;B01D29/15;E21B43/08 主分类号 E21B43/00
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