US3141331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow meters of the variable orifice type
Assignee: Metco Inc
•
Filing: 1958-10-23
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Granted: 1964-07-21
•
Expires: 1978-10-23
Abstract
No abstract record available.
Inventors
- 👤 Charles K Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:22
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A VARIABLE ORIFICE FLUID FLOW METER HAVING A SUBSTANTIALLY VERTICALLY POSITIONED GLASS FLOW METERING TUBE OF CIRCULAR CROSS SECTIONAL SHAPE PROGRESSIVELY INCREASING IN INNER CROSS-SECTIONAL AREA IN AN UPWARD DIRECTION FROM ITS INLET END TO ITS OUTLET END AND A FLOAT FREELY POSITIONED IN THE TUBE, THE IMPROVEMENT WHICH COMPRISES A FLOAT STOP POSITIONED AT THE UPPER OUTLET END PORTION OF THE TUBE HAVING A SUBSTANTIALLY FLAT CIRCULAR CENTRAL UNINTERRUPTED SURFACE AREA EXTENDING AT RIGHT ANGLES TO THE TUBE AXIS AND FACING DOWNWARDLY TOWARD THE INLET END OF THE TUBE, AND A FLUID OUTLET FLOW PASSAGE DEFINED OUTWARDLY OF SAID SURFACE AREA BY A MULTIPLE NUMBER OF ANULARLY POSITIONED PASSAGES BETWEEN THE TUBE WALL AND SAID AREA, SAID PASSAGES EXTENDING DOWNSTREAM PAST SAID SURFACE AREA, SAID UNINTERRUPTED SURFACE AREA BEING DIMENSIONED SO THAT ITS OUTER
Claim 2
Dependent Claim
136 words
IN A VARIABLE ORIFICE FLUID FLOW METER HAVING A SUBSTANTIALLY VERTICALLY POSITIONED GLASS FLOW METERING TUBE OF CIRCULAR CROSS SECTIONAL SHAPE PROGRESSIVELY INCREASING IN INNER CROSS-SECTIONAL AREA IN AN UPWARD DIRECTION FROM ITS INLET END TO ITS OUTLET END AND A FLOAT FREELY POSITIONED IN THE TUBE, THE IMPROVEMENT WHICH COMPRISES A FLOAT STOP POSITIONED AT THE UPPER OUTLET END PORTION OF THE TUBE HAVING A SUBSTANTIALLY FLAT CIRCULAR CENTRAL UNINTERRUPTED SURFACE AREA EXTENDING AT RIGHT ANGLES TO THE TUBE AXIS AND FACING DOWNWARDLY TOWARD THE INLET END OF THE TUBE, AND A FLUID OUTLET FLOW PASSAGE DEFINED OUTWARDLY OF SAID SURFACE AREA BY A MULTIPLE NUMBER OF ANULARLY POSITIONED PASSAGES BETWEEN THE TUBE WALL AND SAID AREA, SAID PASSAGES EXTENDING DOWNSTREAM PAST SAID SURFACE AREA, SAID UNINTERRUPTED SURFACE AREA BEING DIMENSIONED SO THAT ITS OUTER
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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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |