Water tank filter and purifier
AssigneeYugen Kaisha Houseki-No-Angel
InventorHisajiro Hashimoto
Life of this patent
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Abstract
A water tank filter having a double structure including an inner filter having a small pore size for trapping fine particles of filth from tank water and situated within a hollow outer filter having a large pore size for trapping coarse particles of filth. The inner filter is situated in roughly the upper half of the internal space of the outer filter. Disclosed also is a water tank purifier including the water tank filter. The water tank filter and purifier can effectively remove both coarse and fine particles of filth from a water tank. The filter does not quickly get clogged, and is easy to handle.
Claims16
A water tank filter comprising:
- an outer filter and an inner filter,
- the outer filter being a hollow structure and having a large pore size, and trapping coarse particles of filth from water in a water tank, while the inner filter is situated in roughly the upper half of the internal space of the outer filter and has a small pore size for trapping fine particles of filth in the water, and
- wherein the outer filter is of an outer filter material formed by a metal or fiber net, or a foamed resin sheet, while the inner filter is of an inner filter material formed by a woven or non-woven fabric, or Japanese “Washi” paper.
Dependencies are inferred from the claim text.