Patent US3731490A successfully refreshed from Google Patents.
US3731490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual waste disposal system and method
Assignee: THERMASAN CORP
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Filing: 1972-01-13
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Granted: 1973-05-08
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Expires: 1992-01-13
Abstract
Abstract Apparatus for and method of disposing of liquid and organic waste materials through the exhaust system of an internal combustion engine wherein the waste materials are collected in two holding tanks from which the materials are metered by two pumps into the exhaust gases from the engine only under controlled conditions. One of the holding tanks is arranged to receive waste materials from a toilet, and the other holding tank is arranged to receive waste materials from sinks, and the like. The pumps are interconnected electrically or mechanically so that they operate simultaneously, and the second pump connected to the second holding tank is arranged to feed substantially greater volumes of waste materials to the exhaust system than the first pump which is connected to the holding tank for the waste materials from the toilet. Pump control means operate the two pumps only in accordance with prescribed conditions relating to the engine and its exhaust system.
Inventors
- 👤 C Sargent
- 👤 J Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:50
CPC Classifications
B; B60; B60R; B60R15/00; A; A61; A61G; A61G3/00; A61G3/008; B60R15/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A method of disposing of liquid and organic waste materials through the exhaust system of an internal combustion engine, comprising the steps of collecting in separate chambers toilet waste materials and sink waste materials, sensing selected conditions relating to the internal combustion engine, and feeding the toilet and sink waste materials into the exhaust system at different but selected controlled rates only when the sensed conditions are within preselected ranges.
Claim 2
Independent Claim
70 words
A method of disposing of liquid and organic waste materials through the exhaust system of an internal combustion engine, comprising the steps of collecting in separate chambers toilet waste materials and sink waste materials, sensing selected conditions relating to the internal combustion engine, and feeding the toilet and sink waste materials into the exhaust system at different but selected controlled rates only when the sensed conditions are within preselected ranges.
Claim 3
Dependent Claim
40 words
The method that is defined in claim 1, wherein said toilet and sink waste materials are fed at rates of approximately ten parts per volume of the sink waste materials to one part per volume of the toilet waste materials.
Claim 4
Dependent Claim
30 words
The method that is defined in claim 1, wherein the toilet waste materials and the sink waste materials are mixed and fed through a common inlet into said exhaust system.
Claim 5
Dependent Claim
49 words
The method that is defined in claim 1, wherein one of said toilet and sink waste materials is fed into the exhaust system at its selected controlled rate when the sensed conditions are within said preselected ranges if the supply of the other of said waste materials is expended.
Claim 6
Dependent Claim
23 words
The method that is defined in claim 1, wherein said waste materials are fed into said exhaust system by a common motor means.
Claim 7
Dependent Claim
22 words
The method that is defined in claim 1, wherein said waste materials are fed into said exhaust system by separate motor means.
Claim 8
Dependent Claim
151 words
A waste disposal system for use with a rotary internal combustion engine that discharges waste-heated gases through an exhaust system, said waste disposal system comprising a first waste-holding tank for receiving waste materials from a toilet, a second waste-holding tank for receiving waste materials from sinks and other similar facilities, conduit means in communication with each of said holding tanks and said exhaust system, a first metering pump in said conduit means for pumping waste materials from said first holding tank into the waste-heated gases of said exhaust system, a second metering pump in said conduit means for pumping waste materials from said second holding tank into the waste-heated gases of said exhaust system, and pump control means responsive to conditions of operation of said internal combustion engine and its exhaust system for operating said pumps simultaneously at selected rates of feed when said conditions of operation are within selected ranges.
Claim 9
Dependent Claim
151 words
A waste disposal system for use with a rotary internal combustion engine that discharges waste-heated gases through an exhaust system, said waste disposal system comprising a first waste-holding tank for receiving waste materials from a toilet, a second waste-holding tank for receiving waste materials from sinks and other similar facilities, conduit means in communication with each of said holding tanks and said exhaust system, a first metering pump in said conduit means for pumping waste materials from said first holding tank into the waste-heated gases of said exhaust system, a second metering pump in said conduit means for pumping waste materials from said second holding tank into the waste-heated gases of said exhaust system, and pump control means responsive to conditions of operation of said internal combustion engine and its exhaust system for operating said pumps simultaneously at selected rates of feed when said conditions of operation are within selected ranges.
Claim 10
Dependent Claim
45 words
The waste disposal system that is defined in claim 7, wherein said conduit means has a single outlet means for discharging waste materials into the waste-heated gases of said exhaust system, said first and second metering pumps being in communication with said single outlet means.
Claim 11
Dependent Claim
23 words
The waste disposal system that is defined in claim 7, wherein said first and second metering pumps are driven by a common motor.
Claim 12
Dependent Claim
22 words
The waste disposal system that is defined in claim 7, wherein said first and second metering pumps are driven by separate motors.
Claim 13
Dependent Claim
63 words
The waste disposal system that is defined in claim 7, wherein said first and second metering pumps are interconnected so that said second metering pump feeds approximately 10 volumes of waste material from the second holding tank to the exhaust system for each one volume of waste material fed by the first metering pump from the first holding tank to the exhaust system.
Claim 14
Dependent Claim
43 words
The waste disposal system that is defined in claim 7, wherein said pump control means are responsive to conditions indicating the rate of revolution of the internal combustion engine and the temperature of the waste-heated gases into which the waste materials are fed.
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |