US 4,693,820 AGranted

Modular water conditioning apparatus

OwnerRaymond D. Baxterinventor

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Abstract

A modular water conditioning apparatus for filtering or adding substances to water or similar fluids has a filter assembly with a hollow cylindrical casing extending perpendicularly upwards from a cylindrical base section. The base section has coaxial inlet and outlet tubes disposed perpendicularly outwards from opposite cylindrical walls of the base section. Within the base section, a hollow cylindrical boss, coupled to the outlet pipe, extends upwards. Cylindrical filter elements contained within the casing of the filter assembly are held in position and forced into sealing contact with the outlet boss by a cup spring pressed down on the upper surface of the filter element by a cap screwed down on the upper open end of the filter casing. Filter assemblies can be cascaded by inserting an outlet tube into the larger diameter inlet tube of an adjacent filter assembly.

Claims24

Dependent claims

A filter assembly for fluids comprising:

(a) an elongated hollow cylindrical casing having an open upper end,
(b) a hollow cylindrical base sealed at its lower end by a generally flat base plate and sealingly joined at its upper end to the lower end of said casing, said hollow cylindrical base being coaxial with said hollow cylindrical casing, and said hollow interior of said casing communicating with the hollow interior of said base,
(c) a hollow cylindrical boss positioned coaxially and concentrically on the upper inner surface of said base plate of said base, within the hollow interior of said base, said boss having an open upper end,
(d) a hollow outlet tube communicating with the interior of said boss, said hollow outlet tube extending radially outwards from said boss beyond the cylindrical wall of said hollow cylindrical base,
(e) a hollow inlet tube communicating with the generally annular shaped hollow interior region of said base between its interior walls and the outer surfaces of said boss and said outlet tube, said outlet tube being coaxial with said inlet tube and extending radially outwards from the cylindrical wall of said hollow cylindrical base in a direction diametrically opposed to the extension direction of said inlet tube,
(f) an elongated hollow cylindrical filter element holder having an axial passageway adapted to couple sealingly to the hollow interior of said boss,
(g) means for sealingly connecting said passageway in said filter element holder to said interior of said boss, and
(h) means for sealing said open upper end of said elongated hollow cylindrical casing.

5 more elements

A filter assembly for fluids comprising:

(a) a hollow, cylindrical base truncated and sealed at its lower surface by a flat base plate,
(b) a hollow inlet tube extending perpendicularly outward through a cylindrical wall surface of said base, the interior of said inlet tube communicating with the hollow interior of said base,
(c) a hollow cylindrical boss centrally positioned on the upper inner surface of said base plate, said boss having an open upper end,
(d) a hollow outlet tube coaxial with said inlet tube extending perpendicularly outward through an opposite cylindrical wall surface, said outlet tube having a smaller diameter bore communicating with the hollow interior of said boss,
(e) an elongated hollow cylindrical casing coaxial with said cylindrical base and extending upwards therefrom, the bore of said casing communicating with the hollow interior of said cylindrical base, said casing and said base being joined together in a sealing engagement,
(f) a filter support member having a ring-shaped base section with a generally flat upper surface, and a hollow cylindrical tube section disposed perpendicularly upward from said flat upper surface through the center of said ring-shaped base section,
(g) means for sealingly connecting the inner bore of said hollow cylindrical tube section in said filter support member to said hollow interior of said boss, and
(h) means for sealing said open upper end of said elongated hollow casing,
wherein the outer diameter of that portion of said outlet tube extending perpendicularly outward from the cylindrical wall of said hollow cylindrical base is of the proper size to permit said outlet tube to slide coaxially inwards into the bore of said inlet tube extending perpendicularly outwards from the opposite cylindrical wall of said hollow cylindrical base, thereby facilitating the series connection of a plurality of apparatus described.

6 more elements

Dependencies are inferred from the claim text.