A filter for liquids and particularly coffee comprises a container having a planar horizontal base formed with at least one filtrate drainage opening, and on its inner face formed with a plurality of radial ribs and a central support member which together support a generally planar filter element of thin sheet material in spaced parallel relationship to the base. In use the arrangement produces a toroidal circulation of liquid which prevents compaction of the filter cake and reduces clogging of the filter element.
申请公布号
US4123228(A)
申请公布日期
1978.10.31
申请号
US19770824694
申请日期
1977.08.15
申请人
PLASTON AG, KUNSTSTOFFWERKE HANS FREI & SOHNE
发明人
FREI, ROLAND;GUTMANN, FRANZ;SIEBER, PETER;KOEPPEL, PETER