US2709347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat operated refrigeration apparatus having device utilizing flue gas for returning condensate
Assignee: Servel Inc
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Filing: 1952-03-01
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Granted: 1955-05-31
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Expires: 1972-03-01
Abstract
No abstract record available.
Inventors
- 👤 Walter M Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:35
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A HEAT OPERATED REFIGERATION SYSTEM HAVING A HEAT RECEIVING ELEMENT, A HEAT REJECTING ELEMENT, MEANS FOR FLOWING COOLING WATER IN HEAT EXCHANGE RELATION WITH THE HEAT REJECTING ELEMENT AND A BOILER FOR PRODUCING VAPOW FOR HEATING THE HEAT RECEIVING ELEMENT, THE COMBINATION WITH THE ELEMENTS OF SAID SYSTEM OF APPARATUS UTILIZING THE FLOW OF COOLING WATER FOR SIMULTANEOUSLY RETURNING CONDENSATE FROM THE HEAT RECEIVING ELEMENT TO THE BOILER AND TREATING THE COOLING WATER WITH FLUE GAS CONSISTING OF A STANDPIPE EXTENDING ABOVE THE LIQUID LEVEL IN SAID BOILER, A SUMP CONNECTED TO RECEIVE CONDENSATE FROM THE HEAT RECEIVING ELEMENT AND FLUE GAS FROM THE BOILER, A VAPOR LIQUID-LIFT CONNECTING THE SUMP AND STANDPIPE, AN ASPIRATOR IN THE MEANS FOR FLOWING COOLING WATER AND CONNECTED TO THE THE STANDPIPE ADJACENT THE TOP THEREOF, AND A SINGLE VALVE IN THE STANDPIPE HAVING A MOVABLE ELEMENT AUTOMATICALLY OPERATED BY A DIFFERENTIAL FORCE AT OPPOSITE SIDES OF THE ELEMENT.
Claim 2
Dependent Claim
156 words
IN A HEAT OPERATED REFIGERATION SYSTEM HAVING A HEAT RECEIVING ELEMENT, A HEAT REJECTING ELEMENT, MEANS FOR FLOWING COOLING WATER IN HEAT EXCHANGE RELATION WITH THE HEAT REJECTING ELEMENT AND A BOILER FOR PRODUCING VAPOW FOR HEATING THE HEAT RECEIVING ELEMENT, THE COMBINATION WITH THE ELEMENTS OF SAID SYSTEM OF APPARATUS UTILIZING THE FLOW OF COOLING WATER FOR SIMULTANEOUSLY RETURNING CONDENSATE FROM THE HEAT RECEIVING ELEMENT TO THE BOILER AND TREATING THE COOLING WATER WITH FLUE GAS CONSISTING OF A STANDPIPE EXTENDING ABOVE THE LIQUID LEVEL IN SAID BOILER, A SUMP CONNECTED TO RECEIVE CONDENSATE FROM THE HEAT RECEIVING ELEMENT AND FLUE GAS FROM THE BOILER, A VAPOR LIQUID-LIFT CONNECTING THE SUMP AND STANDPIPE, AN ASPIRATOR IN THE MEANS FOR FLOWING COOLING WATER AND CONNECTED TO THE THE STANDPIPE ADJACENT THE TOP THEREOF, AND A SINGLE VALVE IN THE STANDPIPE HAVING A MOVABLE ELEMENT AUTOMATICALLY OPERATED BY A DIFFERENTIAL FORCE AT OPPOSITE SIDES OF THE ELEMENT.
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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |