Patent US2728218A successfully refreshed from Google Patents.
US2728218A
Expired / Lapsed
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Apparatus for measuring solids entrained in gases
Assignee: Atlantic Richfield Co
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Filing: 1952-02-11
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Granted: 1955-12-27
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Expires: 1972-02-11
Abstract
No abstract record available.
Inventors
- 👤 John H Ramser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:50
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1809; G; G01; G01N; G01N15/00; G01N15/06; B01J2208/00; B01J2208/00008; B01J2208/00548
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN AN APPARATUS FOR MEASURING THE PASSAGE OF SOLID PARTICLES IN A STREAM OF GAS PASSING THEOUGH A DUCT, FIRST MEANS FOR CONTINUOUSLY OBTAINING A FIRST SIGNAL PROPORTIONAL TO THE INSTANTANEOUS RATE OF VOLUME FLOW OF SAID GAS PAST A SELECTED POSITION IN SAID DUCT, SECOND MEANS FOR CONTINUOUSLY OBTAINING A SECOND SIGNAL WHICH VARIES EXPONENTIALLY WITH CHANGES IN THE INSTANTANEOUS CONCENTRATION OF SOLID PARTICLES PER UNIT VOLUME OF SAID GAS AT SAID SELECTED POSITION, THIRD MEANS FOR TRANSLATING SAID SECOND SIGNAL INTO A THIRD SIGNAL WHICH VARIES DIRECTLY PROPORTIONALLY WITH CHANGES IN THE INSTANTANEOUS CONCENTRATION OF SOLID PARTICLES PER UNIT VOLUME OF SAID GAS AT SAID SELECTED POSITION, AND FOURTH MEANS FOR COMBINING SAID FIRST AND THIRD SIGNALS OBTAINED FROM SAID FIRST, SECOND, AND THIRD MEANS TO OBTAIN A FOURTH SIGNAL PROPORTIONAL TO THE INSTANTANEOUS RATE OF FLOW OF SAID SOLID PARTICLES PAST SAID SELECTED POSITION.
Claim 2
Dependent Claim
147 words
IN AN APPARATUS FOR MEASURING THE PASSAGE OF SOLID PARTICLES IN A STREAM OF GAS PASSING THEOUGH A DUCT, FIRST MEANS FOR CONTINUOUSLY OBTAINING A FIRST SIGNAL PROPORTIONAL TO THE INSTANTANEOUS RATE OF VOLUME FLOW OF SAID GAS PAST A SELECTED POSITION IN SAID DUCT, SECOND MEANS FOR CONTINUOUSLY OBTAINING A SECOND SIGNAL WHICH VARIES EXPONENTIALLY WITH CHANGES IN THE INSTANTANEOUS CONCENTRATION OF SOLID PARTICLES PER UNIT VOLUME OF SAID GAS AT SAID SELECTED POSITION, THIRD MEANS FOR TRANSLATING SAID SECOND SIGNAL INTO A THIRD SIGNAL WHICH VARIES DIRECTLY PROPORTIONALLY WITH CHANGES IN THE INSTANTANEOUS CONCENTRATION OF SOLID PARTICLES PER UNIT VOLUME OF SAID GAS AT SAID SELECTED POSITION, AND FOURTH MEANS FOR COMBINING SAID FIRST AND THIRD SIGNALS OBTAINED FROM SAID FIRST, SECOND, AND THIRD MEANS TO OBTAIN A FOURTH SIGNAL PROPORTIONAL TO THE INSTANTANEOUS RATE OF FLOW OF SAID SOLID PARTICLES PAST SAID SELECTED POSITION.
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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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |