Patent US3994028A successfully refreshed from Google Patents.
US3994028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toilets
Assignee: Individual
•
Filing: 1974-02-13
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Granted: 1976-11-30
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Expires: 1994-02-13
Abstract
Abstract A toilet comprising a hermetically sealable container for human body waste and urine, the container being connectable to a vacuum source for bringing about boiling off, in the container, of the urine and the liquid present in the human body waste, at low temperature.
Inventors
- 👤 Johan Viktor Abom
- 👤 Nils Ake Valter Ogeblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:26
CPC Classifications
A; A47; A47K; A47K11/00; A47K11/02; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
A toilet which comprises a hermetically sealable container for receiving waste containing liquid components, a vacuum pump connected to said container to reduce the ambient pressure therein, a compressor flow connected to said vacuum pump, and a heating chamber having an outlet and disposed in heat transfer relation with said container, said heating chamber having an inlet flow connected to said compressor, said vacuum pump being operable to effect evaporation of said liquid components at a temperature established by heat transfer from said heating chamber, said vacuum pump passing the evaporation products of said liquid components and air exhausted from the container to said compressor for compression thereby to a higher temperature pressurized state to constitute a heating fluid supplied to said heating chamber through the inlet thereof and discharged from the heating chamber through the outlet thereof.
Claim 2
Dependent Claim
138 words
A toilet which comprises a hermetically sealable container for receiving waste containing liquid components, a vacuum pump connected to said container to reduce the ambient pressure therein, a compressor flow connected to said vacuum pump, and a heating chamber having an outlet and disposed in heat transfer relation with said container, said heating chamber having an inlet flow connected to said compressor, said vacuum pump being operable to effect evaporation of said liquid components at a temperature established by heat transfer from said heating chamber, said vacuum pump passing the evaporation products of said liquid components and air exhausted from the container to said compressor for compression thereby to a higher temperature pressurized state to constitute a heating fluid supplied to said heating chamber through the inlet thereof and discharged from the heating chamber through the outlet thereof.
Claim 3
Dependent Claim
33 words
A toilet according to claim 1 including pressure control means flow connected with said heating chamber to regulate the pressure of the heating fluid therein and hence the temperature of such heating fluid.
Claim 4
Dependent Claim
30 words
A toilet according to claim 1 including means flow connected with said compressor to intake auxiliary air for compression by said compressor to augment the flow of said heating fluid.
Claim 5
Dependent Claim
49 words
A toilet according to claim 1 including a fluid expansion powered machine flow connected to receiving heating fluid discharged from said heating chamber and coupled to at least one of said vacuum pump and compressor to aid in driving ultimate line same by energy recovered from said heating fluid.
Claim 6
Dependent Claim
27 words
A toilet according to claim 1 including filter means flow connected with the outlet of said heating chamber and operable to filter the heating fluid discharged therefrom.
Claim 7
Dependent Claim
32 words
A toilet according to claim 1 wherein said hermetically sealable container is incorporated in a toilet bowl, said container being hermetically sealed by means of a toilet lid associated with said bowl.
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) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |