Liquid purification or separation – With repair or assembling means – Hoist or handle means
Patent
1991-12-17
1992-11-17
Dawson, Robert A.
Liquid purification or separation
With repair or assembling means
Hoist or handle means
210287, 210421, 210422, 210425, 210429, 210456, 210458, 210460, 210470, 210492, 137562, 13762523, B01D 2708, B01D 35157
Patent
active
051640821
ABSTRACT:
A water filter comprising a hollow cylindrical base, a filter assembly fastened in said base at the top which is comprised of an inner filter tube covered with a braided outer filter tube, a cylindrical casing covered on said filter assembly and attached to said base at the top, a ater outlet pipe connected to said base at the bottom, a water intake pipe and a drain pipe respective connected to said base, a plunger fastened in a cylindrical hole inside said base and rotated by a lever, wherein said plunger has a plurality of water passage holes alternatively rotated by said lever to let an intake flow of water from said water intake pipe: (a) flow toward said water outlet pipe directly; (b) flow through said filter assembly to said water outlet pipe (c) flow through the space between said inner filter tube and said outer filter tube and then, penetrate through said outer filter tube toward said drain pipe; (d) flow into the space between said outer filter tube and said cylindrical casing and penetrate through said outer filter tube and then, flow toward said drain pipe; or (e) be stopped from flowing through said base.
REFERENCES:
patent: 4172796 (1979-10-01), Corder
patent: 4504389 (1985-03-01), Rundzaitis
patent: 4556484 (1985-12-01), Hunter et al.
patent: 4770768 (1988-09-01), Lang
patent: 4980073 (1990-12-01), Woodruff
patent: 5017286 (1991-05-01), Heiligman
Dawson Robert A.
Millard W. L.
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