US3175397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and device for automatically ascertaining the heating value of gases with reference to a certain normal condition
Assignee: EOn Ruhrgas AG
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Filing: 1961-11-13
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Granted: 1965-03-30
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Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Niedergesass Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:56
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/22; G01N25/28; G01N25/30; G01N25/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A METHOD OF CONTINUOUSLY AND AUTOMATICALLY ASCERTAINING THE HEATING VALUE AND COMBUSTION HEAT OF A COMBUSTIBLE GAS WHILE EMPLOYING A GASEOUS HEAT CARRIER IN CONNECTION THEREWITH, WHICH COMPRISES THE STEPS OF: SEPARATELY BRANCHING OFF A MINOR PORTION FROM EACH OF A MAIN FLOW OF SAID COMBUSTIBLE GAS AND A MAIN FLOW OF SAID GASEOUS HEAT CARRIER, REDUCING THE PRESSURE OF EACH OF SAID BRANCHED OFF PORTIONS OF SAID COMBUSTIBLE GAS AND SAID GASEOUS HEAT CARRIER TO THE SAME PREDETERMINED LOWER PRESSURE, THEREAFTER SEPARATELY CENTRIFUGALLY COMPRESSING SAID BRANCHED OFF PORTIONS OF SAID COMBUSTIBLE GAS AND SAID GASEOUS HEAT CARRIER, RESPECTIVELY, TO RESPECTIVELY PRESSURES ABOVE ATMOSPHERIC PRESSURE AND WHICH PRESSURES ARE PROPORTIONAL TO THE SPECIFIC WEIGHT OF SAID COMBUSTIBLE GAS AND SAID GASEOUS HEAT CARRIER, RESPECTIVELY, AND ADJUSTING THE MAIN FLOW OF SAID COMBUSTIBLE GAS AND OF SAID GASEOUS HEAT CARRIER RESPECTIVELY, TO A CALORIMETER IN AC-
Claim 2
Independent Claim
145 words
A METHOD OF CONTINUOUSLY AND AUTOMATICALLY ASCERTAINING THE HEATING VALUE AND COMBUSTION HEAT OF A COMBUSTIBLE GAS WHILE EMPLOYING A GASEOUS HEAT CARRIER IN CONNECTION THEREWITH, WHICH COMPRISES THE STEPS OF: SEPARATELY BRANCHING OFF A MINOR PORTION FROM EACH OF A MAIN FLOW OF SAID COMBUSTIBLE GAS AND A MAIN FLOW OF SAID GASEOUS HEAT CARRIER, REDUCING THE PRESSURE OF EACH OF SAID BRANCHED OFF PORTIONS OF SAID COMBUSTIBLE GAS AND SAID GASEOUS HEAT CARRIER TO THE SAME PREDETERMINED LOWER PRESSURE, THEREAFTER SEPARATELY CENTRIFUGALLY COMPRESSING SAID BRANCHED OFF PORTIONS OF SAID COMBUSTIBLE GAS AND SAID GASEOUS HEAT CARRIER, RESPECTIVELY, TO RESPECTIVELY PRESSURES ABOVE ATMOSPHERIC PRESSURE AND WHICH PRESSURES ARE PROPORTIONAL TO THE SPECIFIC WEIGHT OF SAID COMBUSTIBLE GAS AND SAID GASEOUS HEAT CARRIER, RESPECTIVELY, AND ADJUSTING THE MAIN FLOW OF SAID COMBUSTIBLE GAS AND OF SAID GASEOUS HEAT CARRIER RESPECTIVELY, TO A CALORIMETER IN AC-
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |