Patent US4347142A successfully refreshed from Google Patents.
US4347142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Effluent treatment in a non-polluting toilet system
Assignee: International Water Saving Systems Inc
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Filing: 1980-12-22
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Granted: 1982-08-31
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Expires: 2000-12-22
Abstract
Abstract The method of treating human waste in a toilet system for disposal of the waste and recovery of the flushing liquid comprising reducing the solid matter in the effluent by hydraulic attrition in substantially one and a half liters of water containing an effective amount of decontaminant to a particle size which ranges from 1/8 inch to 1/2 micron and in which the solid matter in excess of 1/64 of an inch does not exceed more than 18% of the total solid matter, filtering the solid matter from the water and employing the filtered water following each flushing operation for a succeeding flushing of the system.
Inventors
- 👤 James H. Albertassi
- 👤 Walter O. Heinze
- 👤 Aaron Landsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:26
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/10; C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; Y; Y10; Y10S; Y10S4/00; Y10S4/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
The method of treating human waste effluent solid matter in a toilet system wherein there is a bowl for receiving a deposit of effluent, a pump for delivering flush water to the bowl to effect flushing and a treating tank containing a hydraulic attrition device for receiving effluent and flush water from the bowl, the method comprising, with the aid of the pump, delivering 11/2 liters of flush water to the bowl to flush the effluent from the bowl into the treating tank and, with the aid of the hydraulic attrition device in the form of a rotating blade having a blade diameter of 3 to 7 inches, rotated at 5000 rpm for 21/2 minutes, reducing the solids in the effluent by hydraulic attrition in contrast to maceration to a particle size which ranges from 1/8 inch to 1/2 microns and in which the solid matter in excess of 1/64 of an inch does not exceed more than 18% of the total solid matter, adding a decontaminant to the treating tank during hydraulic attrition to effect decontamination in the form of a 20 gram tablet containing 60% to 95% by weight of calcium hypochlorite and passing said effluent through an upflow filter containing a bed of buoyant particulate material, to separate the solids from the effluent.
Claim 2
Independent Claim
216 words
The method of treating human waste effluent solid matter in a toilet system wherein there is a bowl for receiving a deposit of effluent, a pump for delivering flush water to the bowl to effect flushing and a treating tank containing a hydraulic attrition device for receiving effluent and flush water from the bowl, the method comprising, with the aid of the pump, delivering 11/2 liters of flush water to the bowl to flush the effluent from the bowl into the treating tank and, with the aid of the hydraulic attrition device in the form of a rotating blade having a blade diameter of 3 to 7 inches, rotated at 5000 rpm for 21/2 minutes, reducing the solids in the effluent by hydraulic attrition in contrast to maceration to a particle size which ranges from 1/8 inch to 1/2 microns and in which the solid matter in excess of 1/64 of an inch does not exceed more than 18% of the total solid matter, adding a decontaminant to the treating tank during hydraulic attrition to effect decontamination in the form of a 20 gram tablet containing 60% to 95% by weight of calcium hypochlorite and passing said effluent through an upflow filter containing a bed of buoyant particulate material, to separate the solids from the effluent.
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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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |