Filter media hold down mechanism

Details Filter media hold down mechanism Filter media hold down mechanism

1992-06-29

1994-07-19

Lithgow, Thomas M.

Liquid purification or separation

Filter

Movable medium

2104161, 2104165, B01D 3304, B01D 33056, B01D 2996

Patent

active

053306481

ABSTRACT:
An improved media filtration apparatus includes an upper tank having an end wall and lower filtrate compartment, filter media interposed between the upper tank and filtrate compartment for filtering dirty liquid as it is communicated from the upper tank into the filtrate compartment, a conveyor for indexing the filter media in the upper tank, and a hold down mechanism including a frame having a plurality of lower rotatable spools for carrying and guiding the conveyor along the tank end wall and a skid plate extending generally vertically between the spools for urging the filter media between the hold down mechanism and tank end wall to prevent contaminant migration between the end wall and filter media.

REFERENCES:
patent: 3219188 (1965-11-01), Hirs
patent: 3305094 (1967-02-01), Casson
patent: 3364662 (1968-01-01), Revell
patent: 3506128 (1970-04-01), Pashaian
patent: 3743100 (1973-07-01), Bahr
patent: 3896030 (1975-07-01), Bahr
patent: 4055497 (1977-10-01), Creps
patent: 4111801 (1978-09-01), Jay
patent: 4137169 (1979-01-01), El-Hindi
patent: 4142971 (1979-03-01), Le Fur
patent: 4715964 (1987-12-01), Harms et al.
patent: 4761226 (1988-08-01), Creps
patent: 4774010 (1988-09-01), Bratten
patent: 5221468 (1993-06-01), Fox

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