US3815159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewerage treatment system
Assignee: Kidde Inc
•
Filing: 1972-11-08
•
Granted: 1974-06-11
•
Expires: 1992-11-08
Abstract
Abstract A sewerage treatment system comprising a water closet, a bathing facility, first and second recirculating tanks each including filtering media for dividing the tanks into horizontally adjacent receptacle and filtrate compartments and a drain in the receptacle compartments thereof, means for selectively directing the effluent flushed from the water closet into the receptacle compartment of either recirculating tank, means for selectively directing the effluent from the bathing facility into either recirculating tank, means for selectively draining either recirculating tank, means for selectively recirculating the liquid in the filtrate compartment of either recirculating tank to the water closet for flushing same, means for operating the system in a first mode of operation wherein the effluent from the water closet is discharged into the receptacle compartment of the first recirculating tank, the liquid in the filtrate compartment of the first recirculating tank is selectively recirculated to the water closet, and the effluent from the bathing facility is discharged into the second recirculating tank, and means for alternately operating the system in a second mode of operation wherein the effluent from the water closet is discharged into the receptacle compartment of the second recirculating tank, the liquid in the filtrate compartment of the second recirculating tank is selectively recirculated to the water closet, and the effluent from the bathing facility is discharged into the first recirculating tank, and means for draining the first recirculating tank and for switching the system from the first mode of operation to the second mode of operation.
Inventors
- 👤 R Delaney
- 👤 A Cornish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:21
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/016
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
294 words
A sewerage treatment system comprising water closet means, bathing facility means, first and second recirculating tanks each including filtering media for dividing said tanks into horizontally adjacent receptacle and filtrate compartments and drain means in the receptacle compartments thereof, means for selectively directing the effluent flushed from said water closet means into the receptacle compartment of either of said first or second recirculating tanks, means for selectively directing the effluent from said bathing facility means into either of said first or second recirculating tanks, means for selectively draining either of said first or second recirculating tanks, means for selectively recirculating the liquid in the filtrate compartment of either of said first or second recirculating tanks to said water closet means for flushing same, means for operating the system in a first mode of operation wherein the effluent from said water closet means is discharged into the receptacle compartment of one of said recirculating tanks, the liquid in the filtrate compartment of said one recirculating tank is selectively recirculated to said Water closet means, and the effluent from said bathing facility means is discharged into the other one of said recirculating tanks, and means for alternately operating the system in a second mode of operation wherein the effluent from said water closet means is discharged into the receptacle compartment of said other recirculating tank, the liquid in the filtrate compartment of said other recirculating tank is selectively recirculated to said water closet means, and the effluent from said bathing facility means is discharged into said one recirculating tank, and means for draining said first recirculating tank and for switching the system from said first mode of operation to said second mode of operation when a selected liquid level is reached in said other recirculating tank.
Claim 2
Dependent Claim
294 words
A sewerage treatment system comprising water closet means, bathing facility means, first and second recirculating tanks each including filtering media for dividing said tanks into horizontally adjacent receptacle and filtrate compartments and drain means in the receptacle compartments thereof, means for selectively directing the effluent flushed from said water closet means into the receptacle compartment of either of said first or second recirculating tanks, means for selectively directing the effluent from said bathing facility means into either of said first or second recirculating tanks, means for selectively draining either of said first or second recirculating tanks, means for selectively recirculating the liquid in the filtrate compartment of either of said first or second recirculating tanks to said water closet means for flushing same, means for operating the system in a first mode of operation wherein the effluent from said water closet means is discharged into the receptacle compartment of one of said recirculating tanks, the liquid in the filtrate compartment of said one recirculating tank is selectively recirculated to said Water closet means, and the effluent from said bathing facility means is discharged into the other one of said recirculating tanks, and means for alternately operating the system in a second mode of operation wherein the effluent from said water closet means is discharged into the receptacle compartment of said other recirculating tank, the liquid in the filtrate compartment of said other recirculating tank is selectively recirculated to said water closet means, and the effluent from said bathing facility means is discharged into said one recirculating tank, and means for draining said first recirculating tank and for switching the system from said first mode of operation to said second mode of operation when a selected liquid level is reached in said other recirculating tank.
Claim 3
Dependent Claim
46 words
A sewerage treatment system according to claim 1, further comprising means for draining said other recirculating tank and for switching the system from said second mode of operation to said first mode of operation when said selected liquid level is reached in said one recirculating tank.
Claim 4
Dependent Claim
60 words
A sewerage treatment system according to claim 1, further comprising means for sensing when the liquid level in said other recirculating tank reaches said selected level when the system is operating in said first mode of operation and draining said first recirculating tank and for switching the system from said first mode of operation to said second mode of operation.
Claim 5
Dependent Claim
58 words
A sewerage treatment system according to claim 3, further comprising means for sensing when the liquid level in said one recirculating tank reaches said selected level when the system is operating in said second mode of operation and for draining said second recirculating tank and for switching the system from said second to said first mode of operation.
Claim 6
Dependent Claim
20 words
A sewerage treatment system according to claim 1, wherein said water closet means comprises a plurality of toilets and/or urinals.
Claim 7
Dependent Claim
21 words
A sewerage treatment system according to claim 1, wherein said bathing apparatus means comprises a plurality of sinks and/or liquid drains.
Claim 8
Dependent Claim
27 words
A sewerage treatment system according to claim 1 further comprising holding tank means, means for directing the drainage from said recirculating tanks into said holding tank means.
Claim 9
Dependent Claim
35 words
A sewerage treatment system according to claim 3, further comprising a source of makeup water and means for selectively introducing at least a portion thereof into either of said first or said second recirculating tanks.
Claim 10
Dependent Claim
53 words
A sewerage treatment system according to claim 8, further comprising second means for sensing when the fluid level in said one recirculating tank during the first mode of operation substantially reaches the top thereof and for actuating said introducing means until the liquid level in said other recirculating tank reaches said selected level.
Claim 11
Dependent Claim
29 words
A sewerage treatment system according to claim 1, further comprising a source of odor and/or color control additives and means for selectively introducing a portion thereof into the system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |