Flow measuring apparatus
Abstract
Abstract A FLOW MEASURING APPARATUS FOR MEASURING FLUID FLOW COMPRISES A HOUSING HAVING A BORE THERETHROUGH AND A FLUID PASSAGE MOUNTED ON EACH END OF THE HOUSING AND COMMUNICATING WITH THE BORE. AN END SCREEN IS POSITIONED WITHIN THE HOUSING AND ADJACENT EACH OF THE FLUID PASSAGES TO EFFECT LAMINAR FLOW OF FLUID AND AN INTERMEDIATE SCREEN IS POSITIONED BETWEEN THE END SCREENS TO EFFECT A MEASURABLE PRESSURE DIFFERENTIAL ADJACENT OPPOSITE SIDES OF THE INTERMEDIATE SCREEN. A PAIR OF SPACED APART TAPS ARE MOUNTED ON THE HOUSING FOR CONNECTION TO A DIFFERENTIAL PRESSURE MEASURING INSTRUMENT, AND SAID TAPS BEING POSITIONED ON EACH SIDE OF THE INTERMEDIATE SCREEN IN COMMUNICATION WITH THE SPACE BETWEEN THE INTERMEDIATE SCREEN AND THE RESPECTIVE END SCREEN.
Inventors
- 👤 Hans Rudolph
Bibliographic Details
Claims Analysis
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |