发明名称 |
Filter paper cup for a percolator and process for making the same |
摘要 |
A percolator having a cylindrical basket concentric with a wand is provided with a filter paper cup having an annular bottom coextensive with the bottom of the basket and having upstanding fluted sides. The filter cups are formed by cutting and forming them into a nest of cups having an imperforate bottom, transferring the nest of cups to a frusto-conical die having a circular top commensurate with the circular bottom of the filter cups, a central die-hole, and outwardly and downwardly flaring sides corresponding to the natural outward flare of the nested cups, and punching an axial hole in said nested cups while on said die by means of a punch complementary with said die-hole.
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申请公布号 |
US4098177(A) |
申请公布日期 |
1978.07.04 |
申请号 |
US19760686109 |
申请日期 |
1976.05.13 |
申请人 |
BROWN COMPANY |
发明人 |
OLNEY, WALLACE E.;WRIGHT, ROBERT G. |
分类号 |
A47J31/08;(IPC1-7):A47J31/08 |
主分类号 |
A47J31/08 |
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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