Patent US2815660A successfully refreshed from Google Patents.
US2815660A
Expired / Lapsed
US
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Continuous vapor pressure determination
Assignee: Standard Oil Co
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Filing: 1953-09-09
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Granted: 1957-12-10
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Expires: 1973-09-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Rhodes
- 👤 John P Segers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:50
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A VAPOR PRESSURE MONITORING DEVICE COMPRISING A FIRST PUMP, A HEAT EXCHANGER MEANS INCLUDING A PREHEATER INTO WHICH SAID PUMP DISCHARGES, MEANS FOR MAINTAINING SAID HEAT EXCHANGER MEANS AT A PREDETERMINED CONTROLLED TEMPERATURE, A LIQUID RESERVIOR SUPERPOSING SAID HEAT EXCHANGER, AN OVERFLOW OUTLET FROM SAID RESERVOIR BELOW THE TOP THEREOF AND COMPRISING THE SOLE OUTLET THEREFROM , A SECOND PROPORTIONING PUMP OPERATING AT A GREATER CAPACITY THAN SAID FIRST PUMP TAKING SUCTIONFROM SAID OVERFLOW OUTLET, VALVE MEANS INTERPOSED SAID SECOND PROPORTIONING PUMP AND SAID OUTLET, AND A PRESSURE-RESPONSIVE MEANS COMMUNICATING WITH SAID RESERVOIR AT A POINT THEREIN BELOW SAID OVERFLOW OUTLET.
Claim 2
Dependent Claim
101 words
A VAPOR PRESSURE MONITORING DEVICE COMPRISING A FIRST PUMP, A HEAT EXCHANGER MEANS INCLUDING A PREHEATER INTO WHICH SAID PUMP DISCHARGES, MEANS FOR MAINTAINING SAID HEAT EXCHANGER MEANS AT A PREDETERMINED CONTROLLED TEMPERATURE, A LIQUID RESERVIOR SUPERPOSING SAID HEAT EXCHANGER, AN OVERFLOW OUTLET FROM SAID RESERVOIR BELOW THE TOP THEREOF AND COMPRISING THE SOLE OUTLET THEREFROM , A SECOND PROPORTIONING PUMP OPERATING AT A GREATER CAPACITY THAN SAID FIRST PUMP TAKING SUCTIONFROM SAID OVERFLOW OUTLET, VALVE MEANS INTERPOSED SAID SECOND PROPORTIONING PUMP AND SAID OUTLET, AND A PRESSURE-RESPONSIVE MEANS COMMUNICATING WITH SAID RESERVOIR AT A POINT THEREIN BELOW SAID OVERFLOW OUTLET.
References Cited (Backward Citations)
US2119786A
Cited
US2122722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |