US3182500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotameter transmitter
Assignee: Yokogawa Electric Corp
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Filing: 1962-02-28
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Granted: 1965-05-11
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ishii Kinji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:59
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22; G01F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A ROTAMETER TRANSMITTER COMPRISING, A HOUSING HAVING A FLUID INLET AND A FLUID OUTLET, MEANS DEFINING A FLOW PASSAGEWAY IN SAID HOUSING INTERPOSED BETWEEN SAID INLET AND SAID OUTLET, SAID PASSAGEWAY HAVING A LOWER PORTION AND AN UPPER PORTION HAVING A CROSS-SECTIONAL AREA GREATER THAN SAID LOWER PORTION, A ROD MEMBER SLIDABLY CARRIED IN SAID HOUSING AND EXTENDING INTO SAID PASSAGEWAY, A FLOAT MEMBER SITUATED IN SAID PASSAGEWAY AND CONNECTED TO SAID ROD FOR AXIAL MOVEMENT THEREWITH, SAID FLOAT HAVING A FLUID IMPINGEMENT SURFACE FOR RECEIVING IMPINGING FLUID FLOWING THROUGH SAID PASSAGEWAY AND FOR DISPLACING SAID FLOAT AND SAID ROD AS A FUNCTION OF THE RATE OF FLUID FLOW THROUGH SAID PASSAGEWAY, MEANS COACTING WITH SAID ROD AND RESPONSIVE TO THE POSITION OF SAID FLOAT AND OPERATIVE TO INDICATE RATE OF FLOW THROUGH SAID PASSAGEWAY, AND MEANS OPERATIVE ON SAID ROD FOR EXERTING AN UP- . WARD FORCE ON SAID ROD ONLY WHEN SAID FLUID IMPINGEMENT SURFACE IS IN SAID LOWER PORTION OF SAID PASSAGEWAY.
Claim 2
Dependent Claim
165 words
A ROTAMETER TRANSMITTER COMPRISING, A HOUSING HAVING A FLUID INLET AND A FLUID OUTLET, MEANS DEFINING A FLOW PASSAGEWAY IN SAID HOUSING INTERPOSED BETWEEN SAID INLET AND SAID OUTLET, SAID PASSAGEWAY HAVING A LOWER PORTION AND AN UPPER PORTION HAVING A CROSS-SECTIONAL AREA GREATER THAN SAID LOWER PORTION, A ROD MEMBER SLIDABLY CARRIED IN SAID HOUSING AND EXTENDING INTO SAID PASSAGEWAY, A FLOAT MEMBER SITUATED IN SAID PASSAGEWAY AND CONNECTED TO SAID ROD FOR AXIAL MOVEMENT THEREWITH, SAID FLOAT HAVING A FLUID IMPINGEMENT SURFACE FOR RECEIVING IMPINGING FLUID FLOWING THROUGH SAID PASSAGEWAY AND FOR DISPLACING SAID FLOAT AND SAID ROD AS A FUNCTION OF THE RATE OF FLUID FLOW THROUGH SAID PASSAGEWAY, MEANS COACTING WITH SAID ROD AND RESPONSIVE TO THE POSITION OF SAID FLOAT AND OPERATIVE TO INDICATE RATE OF FLOW THROUGH SAID PASSAGEWAY, AND MEANS OPERATIVE ON SAID ROD FOR EXERTING AN UP- . WARD FORCE ON SAID ROD ONLY WHEN SAID FLUID IMPINGEMENT SURFACE IS IN SAID LOWER PORTION OF SAID PASSAGEWAY.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |