Patent US3204459A successfully refreshed from Google Patents.
US3204459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable venturi
Assignee: Astrosystems International Inc
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Filing: 1962-04-23
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Granted: 1965-09-07
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Expires: 1982-04-23
Abstract
No abstract record available.
Inventors
- 👤 Lehrer Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:22
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/40; G01F1/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN ADJUSTABLE IN-LINE VENTURI FOR MEASURING THE FLOW OF FLUIDS THROUGH A CONDUIT COMPRISING; A CONSTRICTED PORTION SECURED TO THE INNER SURFACE OF THE CONDUIT AND IN AXIAL ALIGNMENT THEREWITH; AN AXIAL PIN HAVING A VARYING TRANSVERSE CROSS SECTIONAL AREA POSITIONED WITHIN THE CONDUIT ADJACENT TO THE CONSTRICTED PORTION, SAID PIN MOVABLY SUPPORTED AT BOTH ENDS AND IN AXIAL ALIGNMENT WITH THE CONDUIT; MEANS FOR MEASURING THE FLUID PRESSURE IN THE UPSTREAM END OF THE CONDUIT; MECHANICAL MEANS FOR VARYING THE RELATIVE POSITION OF THE PIN AND THE CONSTRICTED PORTIONS, SAID MECHANICAL MEANS INCLUDING AN AXIALLY ALIGNED ROTATABLE CYLINDER ON THE OUTSIDE OF THE VENTURI WITH COUPLING MEANS CONNECTED TO THE PIN FOR CHANGING ITS POSITION RELATIVE TO THE CONSTRICTED PORTION AND WITH INTERNAL SCREW THREADS WHICH MESH WITH EXTERNAL SCREW THREADS ON THE CONDUIT.
Claim 2
Dependent Claim
135 words
AN ADJUSTABLE IN-LINE VENTURI FOR MEASURING THE FLOW OF FLUIDS THROUGH A CONDUIT COMPRISING; A CONSTRICTED PORTION SECURED TO THE INNER SURFACE OF THE CONDUIT AND IN AXIAL ALIGNMENT THEREWITH; AN AXIAL PIN HAVING A VARYING TRANSVERSE CROSS SECTIONAL AREA POSITIONED WITHIN THE CONDUIT ADJACENT TO THE CONSTRICTED PORTION, SAID PIN MOVABLY SUPPORTED AT BOTH ENDS AND IN AXIAL ALIGNMENT WITH THE CONDUIT; MEANS FOR MEASURING THE FLUID PRESSURE IN THE UPSTREAM END OF THE CONDUIT; MECHANICAL MEANS FOR VARYING THE RELATIVE POSITION OF THE PIN AND THE CONSTRICTED PORTIONS, SAID MECHANICAL MEANS INCLUDING AN AXIALLY ALIGNED ROTATABLE CYLINDER ON THE OUTSIDE OF THE VENTURI WITH COUPLING MEANS CONNECTED TO THE PIN FOR CHANGING ITS POSITION RELATIVE TO THE CONSTRICTED PORTION AND WITH INTERNAL SCREW THREADS WHICH MESH WITH EXTERNAL SCREW THREADS ON THE CONDUIT.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |