Patent US3112646A successfully refreshed from Google Patents.
US3112646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable orifice flow indicator
Assignee: Individual
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Filing: 1960-02-29
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Granted: 1963-12-03
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Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 Charles L English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:14
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22; G01F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A FLOW RESPONSIVE DEVICE FOR INTERPOSITION IN A FLUID FLOW LINE, COMPRISING A HOLLOW HOUSING THROUGH WHICH FLUID IS DIRECTED IN ONE DIRECTION, SAID HOUSING HAVING A VARIABLE INNER DIAMETER, DIFFERENTIAL AREA PISTON MEANS RECIPROCALLY DISPOSED IN SAID HOUSING WITH THE LARGER END THEREOF FACING IN THE DIRECTION OF FLUID FLOW AND THE SMALLER END THEREOF PROTRUDING THROUGH ONE END OF THE HOUSING IN COMMUNICATION WITH ATMOSPHERIC PRESSURE, MEANS FORMING A LINEARLY VARIABLE ORIFICE IN SAID PISTON MEANS EXTENDING IN A DIRECTION TO PROGRESSIVELY OPEN UPON MOVEMENT OF SAID PISTON MEANS IN THE DIRECTION OF FLUID FLOW, AND MEANS FOR REGISTERING MOVEMENTS OF SAID PISTON MEANS TO INDICATE VARIATIONS IN THE RATE OF SAID FLUID FLOW.
Claim 2
Dependent Claim
116 words
A FLOW RESPONSIVE DEVICE FOR INTERPOSITION IN A FLUID FLOW LINE, COMPRISING A HOLLOW HOUSING THROUGH WHICH FLUID IS DIRECTED IN ONE DIRECTION, SAID HOUSING HAVING A VARIABLE INNER DIAMETER, DIFFERENTIAL AREA PISTON MEANS RECIPROCALLY DISPOSED IN SAID HOUSING WITH THE LARGER END THEREOF FACING IN THE DIRECTION OF FLUID FLOW AND THE SMALLER END THEREOF PROTRUDING THROUGH ONE END OF THE HOUSING IN COMMUNICATION WITH ATMOSPHERIC PRESSURE, MEANS FORMING A LINEARLY VARIABLE ORIFICE IN SAID PISTON MEANS EXTENDING IN A DIRECTION TO PROGRESSIVELY OPEN UPON MOVEMENT OF SAID PISTON MEANS IN THE DIRECTION OF FLUID FLOW, AND MEANS FOR REGISTERING MOVEMENTS OF SAID PISTON MEANS TO INDICATE VARIATIONS IN THE RATE OF SAID FLUID FLOW.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |