发明名称 Aggregate retaining device for drain covers
摘要 An apparatus for and a method of forming a surface finish on a top surface of a drain cover for swimming pools or spas so that the surface finish of the drain cover matches the surface finish of the pool or spa. The apparatus comprises a ring shaped structure that is adapted to be positioned on the top surface of the drain cover wherein the ring is mounted along the general outer perimeter of the top surface of the drain cover. An exposed aggregate or plaster finish is then formed on the top surface of the cover enclosed by the ring so that the ring retains and shapes the surface finish.
申请公布号 US2001013373(A1) 申请公布日期 2001.08.16
申请号 US20010799773 申请日期 2001.03.05
申请人 WRIGHT JAMES R. 发明人 WRIGHT JAMES R.
分类号 E04H4/12;(IPC1-7):E04H4/14 主分类号 E04H4/12
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