Patent ID: 6085915
Filing Date: 2000-07-11
Classification: B01D

Abstract:
A fluid filter assembly for filtering fluid from a machine comprising:an axially extending tubular housing shell having an integral closed end, a distally opposite integral open end having threads, and a sidewall extending integrally between said ends;an annular filter cartridge in said housing shell;an adapter plate having a first set of threads mounting said adapter plate to said machine, and a second set of threads engaging said threads of said open end of said housing shell in thread tightened engagement, said adapter plate having an inlet for receiving fluid from said machine and directing said fluid through said filter cartridge, and an outlet for receiving filtered fluid from said filter cartridge and directing said filtered fluid back to said machine,wherein said integral closed end of said housing shell comprises a central inner integral boss extending axially into said housing shell and supporting and locating said filter cartridge therein, wherein said integral boss has an axially extending passage therein, and comprising a first externally accessible fitting mounted to said integral closed end of said housing shell and communicating with said passage in said boss for introducing cleansing fluid to backwash said filter cartridge, and comprising a second externally accessible fitting mounted to said housing shell for exhausting said cleansing fluid after it has passed through said filter cartridge and draining backwashed fluid from said filter cartridge,and comprising second filter cartridge in said passage in said boss for filtering said cleansing fluid.