Patent US3258203A successfully refreshed from Google Patents.
US3258203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-water heating system
Assignee: Junkers and Co GmbH
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Filing: 1964-07-31
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Granted: 1966-06-28
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Kurz Adolf
- 👤 Heinz Van Lier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:20
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/023; F; F23; F23N; F23N1/00; F23N1/08; F23N1/087; F24; F24D; F24D3/00; F24D3/02; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2035; G05D23/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A HOT-WATER HEATING SYSTEM, IN COMBINATION, A COIL DEFINING AN ENDLESS PATH FOR A SUPPLY OF WATER; PUMP MEANS FOR CIRCULATING THE WATER IN SAID COIL; A BURNER ARRANGED TO HEAT THE WATER IN SAID COIL; A CONDUIT FOR SUPPLING FUEL TO SAID BURNER; A NORMALLY CLOSED REGULATING VALVE PROVIDED IN SAID CONDUIT; MEANS FOR PRODUCING A PRESSURE DIFFERENTIAL IN TWO SPACED PORTIONS OF SAID COIL WHEN THE WATER IS CIRCULATED BY SAID PUMP MEANS; A SAFETY DEVICE COMPRISING A PAIR OF WATER-FILLED CHAMBERS EACH COMMUNICATING WITH ONE ONE OF SAID SPACED PORTIONS OF THE COIL SO THAT THE WATER PRESSURE IN ONE OF SAID CHAMBERS EXCEEDS THE WATER PRESSURE IN THE OTHER CHAMBER, AND ACTUATING MEANS OPERATIVELY CONNECTED WITH AND ARRANGED TO OPEN SAID REGULATING VALVE IN RESPONSE TO SUCH PRESSURE DIFFERENTIAL IN SAID CHAMBERS; AND A THROTTLING DEVICE COMPRISING A THERMOSTAT VALVE MOUNTED IN SAID COIL UPSTREAM OF THE POINT WHERE SAID OTHER CHAMBER COMMUNICATES WITH THE CORRESPONDING PORTION OF SAID COIL AND ARRANGED TO THROTTLE THE FLOW OF WATER AT LEAST WHEN THE WATER TEMPERATURE IN SAID COIL IS BELOW A PREDETERMINED VALVE.
Claim 2
Dependent Claim
187 words
IN A HOT-WATER HEATING SYSTEM, IN COMBINATION, A COIL DEFINING AN ENDLESS PATH FOR A SUPPLY OF WATER; PUMP MEANS FOR CIRCULATING THE WATER IN SAID COIL; A BURNER ARRANGED TO HEAT THE WATER IN SAID COIL; A CONDUIT FOR SUPPLING FUEL TO SAID BURNER; A NORMALLY CLOSED REGULATING VALVE PROVIDED IN SAID CONDUIT; MEANS FOR PRODUCING A PRESSURE DIFFERENTIAL IN TWO SPACED PORTIONS OF SAID COIL WHEN THE WATER IS CIRCULATED BY SAID PUMP MEANS; A SAFETY DEVICE COMPRISING A PAIR OF WATER-FILLED CHAMBERS EACH COMMUNICATING WITH ONE ONE OF SAID SPACED PORTIONS OF THE COIL SO THAT THE WATER PRESSURE IN ONE OF SAID CHAMBERS EXCEEDS THE WATER PRESSURE IN THE OTHER CHAMBER, AND ACTUATING MEANS OPERATIVELY CONNECTED WITH AND ARRANGED TO OPEN SAID REGULATING VALVE IN RESPONSE TO SUCH PRESSURE DIFFERENTIAL IN SAID CHAMBERS; AND A THROTTLING DEVICE COMPRISING A THERMOSTAT VALVE MOUNTED IN SAID COIL UPSTREAM OF THE POINT WHERE SAID OTHER CHAMBER COMMUNICATES WITH THE CORRESPONDING PORTION OF SAID COIL AND ARRANGED TO THROTTLE THE FLOW OF WATER AT LEAST WHEN THE WATER TEMPERATURE IN SAID COIL IS BELOW A PREDETERMINED VALVE.
References Cited (Backward Citations)
US1061635A
Cited
US2194805A
Cited
US2340844A
Cited
FR1201596A
Cited
US2981477A
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US3201045A
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |