Patent US4940082A successfully refreshed from Google Patents.
US4940082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning system
Assignee: Professional Chemicals Corp
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Filing: 1988-12-19
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Granted: 1990-07-10
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Expires: 2008-12-19
Abstract
Abstract A cleaning system includes a liquid heating system utilizing heat from the cooling air and the exhaust gases of an internal combustion engine. A heat pump driven by the engine is utilized to extract heat from the cooling air and impart that heat to a first heat exchanger. A second heat exchanger is associated with the exhaust gases for extracting heat therefrom. Liquid to be heated is conveyed through said first and second heat exchangers.
Inventors
- 👤 James R. Roden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:59
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/34; F; F02; F02B; F02B77/00; F02B77/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, and a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, a spray nozzle operatively connected to the liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for conveying air withdrawn into said vacuum nozzle to said heat pump evaporator.
Claim 2
Dependent Claim
178 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, and a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, a spray nozzle operatively connected to the liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for conveying air withdrawn into said vacuum nozzle to said heat pump evaporator.
Claim 3
Dependent Claim
199 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, and a liquid pump driven by said engine, said pump causing the liquid to flow through said first and second heat exchangers, a spray nozzle operatively connected to said liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for conveying air withdrawn into said vacuum nozzle to said heat pump evaporator.
Claim 4
Dependent Claim
199 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, and a liquid pump driven by said engine, said pump causing the liquid to flow through said first and second heat exchangers, a spray nozzle operatively connected to said liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for conveying air withdrawn into said vacuum nozzle to said heat pump evaporator.
Claim 5
Dependent Claim
188 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, and a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, a spray nozzle operatively connected to the liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for separating the air from the liquid withdrawn into said vacuum nozzle and means for conveying that air to said heat pump evaporator.
Claim 6
Dependent Claim
188 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, and a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, a spray nozzle operatively connected to the liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for separating the air from the liquid withdrawn into said vacuum nozzle and means for conveying that air to said heat pump evaporator.
Claim 7
Dependent Claim
209 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, and a liquid pump driven by said engine, said pump causing the liquid to flow through said first and second heat exchangers, a spray nozzle operatively connected to said liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for separating the air from the liquid withdrawn into said vacuum nozzle and means for conveying that air to said heat pump evaporator.
Claim 8
Dependent Claim
209 words
A cleaning system comprising in combination a liquid heating system comprising an air cooled internal combustion engine, means for conveying cooling air away from the engine, means for conveying exhaust gases away from the engine, first and second heat exchangers, means for conveying the liquid to be heated through said first and second heat exchangers, a heat pump comprising a compressor driven by said engine, a condenser associated with said first heat exchanger, an expansion device and an evaporator associated with the means for conveying cooling air away from the engine, said second heat exchanger being associated with the means for conveying exhaust gases away from the engine, and a liquid pump driven by said engine, said pump causing the liquid to flow through said first and second heat exchangers, a spray nozzle operatively connected to said liquid conveying means to spray liquid heated by said first and second heat exchangers, a vacuum nozzle for retrieving liquid sprayed by said spray nozzle, a vacuum pump driven by said engine and connected to said vacuum nozzle for withdrawing liquid and air into said vacuum nozzle, and means for separating the air from the liquid withdrawn into said vacuum nozzle and means for conveying that air to said heat pump evaporator.
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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) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |