초록 ▼

A rechargeable filter assembly for removal of contaminants from liquids of all types, particularly dry cleaning solvents comprising three nested and spaced apart concentric perforated metal cylinders defining an inner cavity and an outer cavity held in spatial relationship by a base plate and remova

A rechargeable filter assembly for removal of contaminants from liquids of all types, particularly dry cleaning solvents comprising three nested and spaced apart concentric perforated metal cylinders defining an inner cavity and an outer cavity held in spatial relationship by a base plate and removable lid. With the lid and outer perforated cylinder (exterior shell) removed, a removable and disposable filter unit may be placed within the outer cavity and similar, or different, filter medium may be placed within the inner cavity. The gaskets of the filter unit in conjunction with the lid, the base, the conduit, exterior shell and the inner perforated cylinder provide seals which prevent liquids from bypassing the filter unit.

대표청구항 ▼

A rechargeable filter assembly comprising: a reusable perforated conduit having a first and a second open end; a base plate affixed to said second end of said conduit, said base plate having a base aperture formed therethrough and said conduit being in fluid flow communication with said base apertur

A rechargeable filter assembly comprising: a reusable perforated conduit having a first and a second open end; a base plate affixed to said second end of said conduit, said base plate having a base aperture formed therethrough and said conduit being in fluid flow communication with said base aperture; a reusable hollow perforated support cylinder having a first open end and a second open end, said support cylinder surrounding said conduit and spaced therefrom, said support cylinder and said conduit defining an inner cavity therebetween, and one of said ends of said support cylinder being removably attached to said base plate; a reusable perforated cylindrical exterior shell having at least one open end, said exterior shell surrounding said support cylinder being removably connected to said base to define an outer cavity therebetween; a lid having a lid aperture therethrough, said lid removably attached to said first end of said conduit and removably connected to said support cylinder; a cylindrical filter unit having a first end and a second end, said filter unit having a first and second filter unit sealing means on said first and said second ends respectively, and said filter unit having an opening therethrough, said filter unit adapted to be removably inserted onto and around said support cylinder within said outer cavity, whereby said second sealing means of said filter unit is adjacent to said base plate and said first sealing means is adjacent to said lid of said filter assembly; a lid attaching means for removably attaching said lid to said conduit; a lid sealing means for removably sealing said lid to said filter unit wherein said perforated conduit further comprises a first section including said first end of said conduit, a second section including said second end of said conduit, and an annular shoulder interposed between said first and said second sections, said first section having a diameter less than said second sections, such that when said filter unit is inserted within said outer cavity said filter unit sealing means of said first end of said filter unit rests upon said shoulder, and when said lid is attached to said conduit by said lid attaching means, said filter unit sealing means of said first end of said filter unit is sealingly squeezed between said lid and said shoulder, whereby fluid is prevented from bypassing the filter medium; a base plate sealing means for removably sealing said base plate to said second filter unit sealing means; and filter medium inserted in said inner cavity.