US3298431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer system
Assignee: Comstock and Wescott Inc
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Filing: 1965-01-11
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Granted: 1967-01-17
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Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Eastman A Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:03
CPC Classifications
F; F24; F24D; F24D11/00; F24H; F24H1/00; F24H1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
A HEAT-TRANSFER SYSTEM COMPRISING A HEAT SINK, A VARIABLE HEAT SOURCE THE TEMPERATURE OF WHICH VARIES THROUGHOUT A WIDE RANGE, AN ENDLESS CONDUIT CIRCUIT IN HEAT-TRANSFER RELATION TO THE SOURCE AND SINK FOR TRANSFERRING HEAT FROM THE SOURCE TO THE SINK, THE CIRCUIT CONTAINING LIQUID VAPORIZABLE BY THE SOURCE AND CONDENSIBLE BY THE SINK, THE CIRCUIT INCLUDING A SINK-PORTION FOR HOLDING LIQUID IN HEAT-TRANSFER RELATION TO THE SINK AND A SOURCE-PORTION FOR HOLDING A QUALITY OF SAID LIQUID IN HEAT-TRANSFER RELATION TO THE SOURCE AND A RETURN-PORTION LEADING FROM THE LOWER END OF THE SOURCE-PORTION, THE SINK BEING LOCATED ABOVE THE SOURCE SO THAT THE CONDENSED LIQUID MAY DRAIN BACK TO THE SOURCE BY GRAVITY THROUGH SAID RETURN PORTION OF SAID CIRCUIT, A THERMAL VALVE IN SAID RETURN-PORTION OF THE CIRCUIT, MEANS RESPONSIVE TO THE TEMPERATURE OF THE SINK FOR SUBSTANTIALLY CLOSING THE VALVE WHEN THE TEMPERATURE OF THE SINK REACHES A PREDETERMINED MAXIMUM, SAID SINK-PORTION BEING LARGE ENOUGH TO CONTAIN SUBSTANTIALLY ALL OF SAID QUANTITY, WHEREBY WHEN THE SINK REACHES SAID MAXIMUM SUBSTANTIALLY ALL OF SAID QUANTITY IS TRANSFERRED TO THE SINK-PORTION THEREBY SUBSTANTIALLY STOPPING HEAT-TRANSFER FROM SOURCE TO SINK, A BY-PASS AROUND SAID VALVE AND IN THE BY-PASS A CHECK-VALVE WHICH PERMITS FLOW ONLY FROM SAID SOURCE-
Claim 2
Dependent Claim
209 words
A HEAT-TRANSFER SYSTEM COMPRISING A HEAT SINK, A VARIABLE HEAT SOURCE THE TEMPERATURE OF WHICH VARIES THROUGHOUT A WIDE RANGE, AN ENDLESS CONDUIT CIRCUIT IN HEAT-TRANSFER RELATION TO THE SOURCE AND SINK FOR TRANSFERRING HEAT FROM THE SOURCE TO THE SINK, THE CIRCUIT CONTAINING LIQUID VAPORIZABLE BY THE SOURCE AND CONDENSIBLE BY THE SINK, THE CIRCUIT INCLUDING A SINK-PORTION FOR HOLDING LIQUID IN HEAT-TRANSFER RELATION TO THE SINK AND A SOURCE-PORTION FOR HOLDING A QUALITY OF SAID LIQUID IN HEAT-TRANSFER RELATION TO THE SOURCE AND A RETURN-PORTION LEADING FROM THE LOWER END OF THE SOURCE-PORTION, THE SINK BEING LOCATED ABOVE THE SOURCE SO THAT THE CONDENSED LIQUID MAY DRAIN BACK TO THE SOURCE BY GRAVITY THROUGH SAID RETURN PORTION OF SAID CIRCUIT, A THERMAL VALVE IN SAID RETURN-PORTION OF THE CIRCUIT, MEANS RESPONSIVE TO THE TEMPERATURE OF THE SINK FOR SUBSTANTIALLY CLOSING THE VALVE WHEN THE TEMPERATURE OF THE SINK REACHES A PREDETERMINED MAXIMUM, SAID SINK-PORTION BEING LARGE ENOUGH TO CONTAIN SUBSTANTIALLY ALL OF SAID QUANTITY, WHEREBY WHEN THE SINK REACHES SAID MAXIMUM SUBSTANTIALLY ALL OF SAID QUANTITY IS TRANSFERRED TO THE SINK-PORTION THEREBY SUBSTANTIALLY STOPPING HEAT-TRANSFER FROM SOURCE TO SINK, A BY-PASS AROUND SAID VALVE AND IN THE BY-PASS A CHECK-VALVE WHICH PERMITS FLOW ONLY FROM SAID SOURCE-
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |