US5807480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration device in a tank having control unit to generate high and low tides in tank
Assignee: Jaleco Ltd
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Filing: 1996-10-25
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Granted: 1998-09-15
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Expires: 2016-10-25
Abstract
Abstract A filtration device for filtering and cleaning water to be supplied to a water tank comprises a main body having an upper end opening selectively closed by a lid mounted thereon in an installed state, a filtering unit detachably disposed in the main body, an air exhaust element communicating with an inside and outside of the main body, a water inlet connected to the main body, a feed water pipe connected to the water inlet for supplying water into the main body, a drainage pump for draining clean water cleaned up by the filtering unit, a water outlet operatively connected to the filtering unit to supply the cleaned-up water to the water tank, and a flow rate control unit, which is detachably incorporated into the main body and is connected to an inner portion of the water inlet, for controlling a flow rate of raw water, which is introduced from the water inlet to the main body, in a manner that a water level of water contained in the main body alternately has a high-tide water level, at which the filtering unit is covered with water and a low-tide water level which is lower than a location of the filtering unit.
Inventors
- 👤 Yoshiaki Kanazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:13
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/04; A01K63/045
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
195 words
A filtration device for filtering and cleaning water to be supplied to a water tank, comprising: a main body having an upper end opening selectively closed by a lid mounted to said main body in an installed state; a filtering means detachably disposed in the main body; an exhaust means respectively communicating with the inside and the outside of the main body; a water inlet means connected to the main body; a feed water pipe connected to the water inlet means for supplying raw water into the main body; a drainage pump means for draining clean water cleaned by the filtering means; a water outlet means operatively connected to the filtering means and pump means to supply the clean water to the water tank; and a flow rate control unit, detachably incorporated into the main body and connected to the feed water pipe, for controlling a flow rate of raw water in a manner that a water level of water contained in the main body alternatively has a high-tide water level, at which the filtering means is covered with water, and a low-tide water level which is lower than a location of the filtering means.
Claim 2
Dependent Claim
195 words
A filtration device for filtering and cleaning water to be supplied to a water tank, comprising: a main body having an upper end opening selectively closed by a lid mounted to said main body in an installed state; a filtering means detachably disposed in the main body; an exhaust means respectively communicating with the inside and the outside of the main body; a water inlet means connected to the main body; a feed water pipe connected to the water inlet means for supplying raw water into the main body; a drainage pump means for draining clean water cleaned by the filtering means; a water outlet means operatively connected to the filtering means and pump means to supply the clean water to the water tank; and a flow rate control unit, detachably incorporated into the main body and connected to the feed water pipe, for controlling a flow rate of raw water in a manner that a water level of water contained in the main body alternatively has a high-tide water level, at which the filtering means is covered with water, and a low-tide water level which is lower than a location of the filtering means.
Claim 3
Dependent Claim
47 words
A filtration device according to claim 1, wherein said lid mounted to the opening of the main body is provided with said exhaust means, said water inlet means and said water outlet means which are respectively mounted thereto to be at least one of water-tight and air-tight.
Claim 4
Dependent Claim
59 words
A filtration device according to claim 2, wherein said exhaust means is an exhaust pipe having one end disposed inside the water tank at a portion above a water level of water in the water tank and structurally adapted to inhale or exhale air in response to the high and the low tide water levels of the filtration device.
Claim 5
Dependent Claim
24 words
A filtration device according to claim 2, wherein said water outlet means comprises a drainage hose having one end connected to the filtering means.
Claim 6
Dependent Claim
17 words
A filtration device according to claim 1, wherein said water inlet means comprises a feed water hose.
Claim 7
Dependent Claim
44 words
A filtration device according to claim 1, wherein a drainage extension pipe is further disposed to be detachably connected to a suction opening of the drainage pump means and is opened at a level lower than the filtering means provided in the main body.
Claim 8
Dependent Claim
67 words
A filtration device according to claim 1, wherein said feed water pipe has an upper end in an installed state communicated in a water-tight manner with the water inlet means and a closed lower end, said feed water feed pipe having a side wall defining a plurality of feed water holes, the lower end of said feed water pipe being located in the flow rate control unit.
Claim 9
Dependent Claim
54 words
A filtration device according to claim 7, wherein a slider sleeve is further mounted to an outer periphery of the feed water pipe to be axially slidable, and said flow rate control unit comprises an open/close float mounted to the slider sleeve, which is axially slidable by a floating force of the open/close float.
Claim 10
Dependent Claim
21 words
A filtration device according to claim 8, wherein said high- and low-tide water level floats are engageable with said slider sleeve.
Claim 11
Dependent Claim
35 words
A filtration device according to claim 1, wherein said filtering means comprises a filter case and a filtering material disposed in a laminated manner in the filter case, said filtering material comprising a porous material.
Claim 12
Dependent Claim
50 words
A filtration device according to claim 10, wherein said filter case comprises one side wall section which faces the flow rate control unit and which is formed by a blind plate, another side wall section and a bottom wall section which are formed with a plurality of water communication holes.
Claim 13
Dependent Claim
57 words
A filtration device according to claim 11, wherein said filter case further comprises an upper stage case element and a lower stage case element stacked vertically and said flow rate control unit comprises a high-tide water level float and a low-tide water level float which are respectively movably attached to the upper and lower stage case elements.
Claim 14
Dependent Claim
15 words
A filtration device according to claim 10, wherein said porous material is made from ceramics.
Claim 15
Dependent Claim
15 words
A filtration device according to claim 10, wherein said porous material is made from aluminum.
Claim 16
Dependent Claim
83 words
A filtration device according to claim 1, wherein said lid mounted to the opening of the main body is provided with said exhaust means, said water inlet means and said water outlet means which are mounted thereto in at least one of a water-tight and air-tight manner, said exhaust means comprises an exhaust device provided with a float chamber in which a float is disposed and a case body formed with an inlet portion and an outlet portion and which the float chamber.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-14 | 2002-03-16 | 2002-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-14 | 2006-03-16 | 2006-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-14 | 2010-03-16 | 2010-09-15 | $7700.00 | Window Closed / Lapsed |