US3278728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas weight flow computer
Assignee: Individual
•
Filing: 1962-11-06
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Granted: 1966-10-11
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Expires: 1982-11-06
Abstract
No abstract record available.
Inventors
- 👤 Sam P Ragsdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:31
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/363; G01F1/76; G01F1/86; G01F1/88; G06; G06G; G06G7/00; G06G7/48; G06G7/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A DEVICE FOR COMPUTING THE GAS WEIGHT FLOW OF A GAS THROUGH A RESTRICTION IN A CONDUIT, COMPRISING: A FIRST MEANS FOR CONTINUOUSLY MEASURING THE PRESSURE (PU1) UPSTREAM OF SAID RESTRICTION, MEANS FOR CONTINUOUSLY MEASURING THE PRESSURE (PD) DOWNSTREAM OF SAID RESTRICTION, MEANS FOR CONTINUOUSLY PRODUCING A FIRST ELECTRICAL SIGNAL PROPORTIONAL TO THE RATIO OF SAID DOWNSTREAM PRESSURE AND SAID UPSTREAM PRESSURE, MEANS, RESPONSIVE TO SAID RATIO SIGNAL, FOR PRODUCING A SECOND SIGNAL PROPORTIONAL TO F(PD/PU1) EQUAL TO
Claim 2
Independent Claim
78 words
A DEVICE FOR COMPUTING THE GAS WEIGHT FLOW OF A GAS THROUGH A RESTRICTION IN A CONDUIT, COMPRISING: A FIRST MEANS FOR CONTINUOUSLY MEASURING THE PRESSURE (PU1) UPSTREAM OF SAID RESTRICTION, MEANS FOR CONTINUOUSLY MEASURING THE PRESSURE (PD) DOWNSTREAM OF SAID RESTRICTION, MEANS FOR CONTINUOUSLY PRODUCING A FIRST ELECTRICAL SIGNAL PROPORTIONAL TO THE RATIO OF SAID DOWNSTREAM PRESSURE AND SAID UPSTREAM PRESSURE, MEANS, RESPONSIVE TO SAID RATIO SIGNAL, FOR PRODUCING A SECOND SIGNAL PROPORTIONAL TO F(PD/PU1) EQUAL TO
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |