Patent US4652368A successfully refreshed from Google Patents.
US4652368A
Expired / Lapsed
US
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Water filtration system
Assignee: N/S Corp A CORP OF
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Filing: 1986-06-05
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Granted: 1987-03-24
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Expires: 2006-06-05
Abstract
Abstract A constant-recirculation filter system for decontaminating and reusing wash water in vehicle washing installations and other applications in which water recycling is needed. The elements of the system are selected to avoid need for backwashing operations, thereby enabling use by unskilled personnel. Unrecycled fresh water is used to rinse vehicles, and to provide makeup water to the recirculating system.
Inventors
- 👤 G. Thomas Ennis
- 👤 Robert G. Chelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:55
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/02; B01D36/04; C; C02; C02F; C02F1/00; C02F1/40; C02F2103/00; C02F2103/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
406 words
In a vehicle washing system including spray means for intermittently spraying water onto a vehicle on demand, a water reclamation system comprising: a. water collection means for collecting the water draining from the vehicle washing system; b. water storage means having an upper surface, a lower surface, an input port positioned at an elevation at or below the upper surface but spaced above the lower surface of said water storage means, and an output port positioned at an elevation below said input port and above the lower surface of said water storage means; c. means for pumping the water from said water collection means into the input port of said water storage means; d. means for sensing the quantity of water in said water collection means and for energizing said pumping means to maintain quantity of water in said water collection means below a predetermined quantity; e. drain port means coupled to said water storage means in proximity to the lower surface of said water storage means and below the output port of said water storage menas for accessing all sediment laden water in said water storage means; f. continuous flow means coupled to said drain port means and to said water collection means for preventing stagnation of the sediment laden water in said water storage means by maintaining a substantially continuous flow of the sediment laden water from said drain port means into said water collection means; g. water transfer means coupled to the output port of said water storage means for providing a water flow path from said water storage means to said spray means; and h. the water flow path through said water storage means, said drain port means, said continuous flow means, said water collection means and said pumping means defining a first loop for continuously recirculating all water within said system when said system is operating in a non-washing mode and the water flow path through said water storage means, said water transfer means, said spray means, said water collection means, and said pumping means defining a second loop for intermittently directing water through said spray means onto said vehicle when said system is placed in an operating mode to wash said vehicle; whereby water stagnation is eliminated by maintaining a continuous, recirculating flow of all water between said water storage means and said water collection means whether said system is functioning in the non-washing mode or in the operating mode.
Claim 2
Dependent Claim
406 words
In a vehicle washing system including spray means for intermittently spraying water onto a vehicle on demand, a water reclamation system comprising: a. water collection means for collecting the water draining from the vehicle washing system; b. water storage means having an upper surface, a lower surface, an input port positioned at an elevation at or below the upper surface but spaced above the lower surface of said water storage means, and an output port positioned at an elevation below said input port and above the lower surface of said water storage means; c. means for pumping the water from said water collection means into the input port of said water storage means; d. means for sensing the quantity of water in said water collection means and for energizing said pumping means to maintain quantity of water in said water collection means below a predetermined quantity; e. drain port means coupled to said water storage means in proximity to the lower surface of said water storage means and below the output port of said water storage menas for accessing all sediment laden water in said water storage means; f. continuous flow means coupled to said drain port means and to said water collection means for preventing stagnation of the sediment laden water in said water storage means by maintaining a substantially continuous flow of the sediment laden water from said drain port means into said water collection means; g. water transfer means coupled to the output port of said water storage means for providing a water flow path from said water storage means to said spray means; and h. the water flow path through said water storage means, said drain port means, said continuous flow means, said water collection means and said pumping means defining a first loop for continuously recirculating all water within said system when said system is operating in a non-washing mode and the water flow path through said water storage means, said water transfer means, said spray means, said water collection means, and said pumping means defining a second loop for intermittently directing water through said spray means onto said vehicle when said system is placed in an operating mode to wash said vehicle; whereby water stagnation is eliminated by maintaining a continuous, recirculating flow of all water between said water storage means and said water collection means whether said system is functioning in the non-washing mode or in the operating mode.
Claim 3
Dependent Claim
108 words
The water reclamation system of claim 1 wherein said water storage means includes: a. a first water storage tank having an upper and a lower surface and including the input port of said water storage means; b. a second water storage tank having an upper and a lower surface and including the output port of said water storage means; and c. water level equalizing means coupled to said first and second water storage tanks at elevations intermediate to the upper and lower surfaces of said tanks for permitting gravity flow of water between said first and second water storage tanks to equalize the water levels in said tanks.
Claim 4
Dependent Claim
60 words
The water reclamation system of claim 2 wherein said drain port means includes: a. a first drain port coupled to access the sediment laden water proximate to the lower surface of said first water storage tank; and b. a second drain port coupled to access the sediment laden water proximate to the lower surface of said second water storage tank.
Claim 5
Dependent Claim
33 words
The water reclamation system of claim 3 wherein said water level equalizing means is coupled to said second water storage tank at an elevation above the output port of said water sotrage means.
Claim 6
Dependent Claim
26 words
The water reclamation system of claim 4 whrein said water level equalizing means is coupled to said first and second water storage tanks at equal elevations.
Claim 7
Dependent Claim
37 words
The water reclamation system of claim 5 wherein said water level equalizing means is coupled to said first and second water storage tanks at a level substantially equidistant between the upper and lower surfaces of said tanks.
Claim 8
Dependent Claim
37 words
The reclamation system of claim 2 wherein said first and second water storage tanks have an equal water storage capacity and are mounted side by side with the lower surfaces of said tanks positioned at ground level.
Claim 9
Dependent Claim
37 words
The water reclamation system of claim 1 wherein the flow of sediment laden water from said water storage means through said continuous flow means is maintained by a gravity-induced head pressure and establishes a gravity-induced flow rate.
Claim 10
Dependent Claim
27 words
The water reclamation system of claim 1 wherein said pumping means is intermittently energized to transfer water from said water collection means into said water storage means.
Claim 11
Dependent Claim
22 words
The water reclamation system of claim 1 wherein said water transfer means includes an intermittently energized electric pump and water filtration means.
Claim 12
Dependent Claim
61 words
The water reclamation system of claim 1 wherein said water storage means operates with at least a minimum level of water and wherein said water collection means includes a sump positioned at an elevation below the minimum water level of said water storage means to maintain a gravity flow of sediment laden water from said water storage means into said sump.
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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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |