Liquid purification or separation – Plural distinct separators – Filters
Patent
1990-11-23
1992-09-22
Dawson, Robert A.
Liquid purification or separation
Plural distinct separators
Filters
2104331, 210441, 210450, 210451, 21049701, B01D 2915
Patent
active
051494310
ABSTRACT:
A filter constructed of sections of plastic pipe reinforced by plastic bands glued to the pipe to increase the wall thickness at strategic locations and increase the surface area adjacent seals between the canister components. An encircling steel ring cooperates with a shoulder provided by one band for clamping three seals with one clamp. A second similar ring and band clamps a fourth seal. All seal clamps are of steel construction and are not exposed to corrosive fluid entering the filter. Commercially available stainless steel Helicoil thread inserts are utilized in holes through plastic material to afford greater strength and longevity for the filter.
REFERENCES:
patent: 4265771 (1981-05-01), Lennartz et al.
patent: 4319997 (1982-03-01), Pett
patent: 4713174 (1987-12-01), Zievers et al.
patent: 4849104 (1989-07-01), Sarcera et al.
patent: 4850428 (1989-07-01), Paulus
patent: 4946588 (1990-08-01), Wise
Dawson Robert A.
Millard Wanda L.
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