US3271994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow comparator for use in calibrating fluid flow orifices
Assignee: JERED IND Inc
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Filing: 1965-04-19
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Granted: 1966-09-13
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Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Daniel B Fournier
- 👤 Urho A Strang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A FLUID FLOW MEASURING INSTRUMENT FOR CALIBRATING A FLUID FLOW ORIFICE, FIRST AND SECOND FLUID RESERVOIRS, CONDUIT STRUCTURE INTERCONNECTING SAID RESERVOIR, EACH RESERVOIR CONTAINING LIQUID, THE LEVEL OF LIQUID IN ONE RESERVOIR BEING LOWER THAN THE LIQUID LEVEL OF THE OTHER RESERVOIR, MEANS FOR SUPPLYING FLUID TO SAID OTHER RESERVOIR, SAID CONDUIT STRUCTURE BEING ADAPTED TO ACCOMMODATE A TEST DEVICE IN THE FORM OF AN ORIFICE, MEANS FOR SELECTIVELY ESTABLISHING AND INTERRUPTING FLOW OF FLUID FROM ONE RESERVOIR TO THE OTHER THROUGH SAID TEST DEVICE, MEANS FOR COLLECTING THE LIQUID DISPLACED BY SAID ONE RESERVOIR IN A COLLECTOR OF VARIABLE DEPTH, AND MEANS FOR RECORDING THE ACCUMULATED PRESSURE HEAD IN SAID COLLECTOR FOLLOWING A PREDETERMINED TIME INTERVAL, THE MAGNITUDE OF THE PRESSURE HEAD ACCUMULATED DURING SAID INTERVAL THEREBY BEING A MEASURE OF THE FLOW THROUGH SAID ORIFICE.
Claim 2
Dependent Claim
138 words
IN A FLUID FLOW MEASURING INSTRUMENT FOR CALIBRATING A FLUID FLOW ORIFICE, FIRST AND SECOND FLUID RESERVOIRS, CONDUIT STRUCTURE INTERCONNECTING SAID RESERVOIR, EACH RESERVOIR CONTAINING LIQUID, THE LEVEL OF LIQUID IN ONE RESERVOIR BEING LOWER THAN THE LIQUID LEVEL OF THE OTHER RESERVOIR, MEANS FOR SUPPLYING FLUID TO SAID OTHER RESERVOIR, SAID CONDUIT STRUCTURE BEING ADAPTED TO ACCOMMODATE A TEST DEVICE IN THE FORM OF AN ORIFICE, MEANS FOR SELECTIVELY ESTABLISHING AND INTERRUPTING FLOW OF FLUID FROM ONE RESERVOIR TO THE OTHER THROUGH SAID TEST DEVICE, MEANS FOR COLLECTING THE LIQUID DISPLACED BY SAID ONE RESERVOIR IN A COLLECTOR OF VARIABLE DEPTH, AND MEANS FOR RECORDING THE ACCUMULATED PRESSURE HEAD IN SAID COLLECTOR FOLLOWING A PREDETERMINED TIME INTERVAL, THE MAGNITUDE OF THE PRESSURE HEAD ACCUMULATED DURING SAID INTERVAL THEREBY BEING A MEASURE OF THE FLOW THROUGH SAID ORIFICE.
References Cited (Backward Citations)
US2790320A
Cited
US3148527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |