US3157048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital tank gaging system
Assignee: TRANS SONICS Inc
•
Filing: 1961-07-03
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Granted: 1964-11-17
•
Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Sidney B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:40
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
FLUID-DEPTH SENSING APPARATUS COMPRISING, IN COMBINATION, A PLURALITY OF SENSORS LOGICALLY ORDERED IN AN ARRAY EXPOSED TO A FLUID, EACH OF SAID SENSORS HAVING A SENSING LEVEL, EACH SENSOR HAVING A FIRST PAIR OF TERMINALS AND ADAPTED TO DEVELOP WHEN IMMERSED IN SAID FLUID BELOW SAID SENSING LEVEL A VOLTAGE THEREBETWEEN HAVING A CHARACTERISTIC SUBSTANTIALLY DIFFERENT FROM THE VOLTAGE DEVELOPED WHEN THE FLUID LEVEL IS BELOW SAID SENSING LEVEL, SAID SENSORS BEING ARRANGED IN SAID ARRAY SO THAT ADDITIONAL SENSING LEVELS ARE IMMERSED WHEN THE LEVEL OF SAID FLUID RISES AND BEING CONNECTED SCHEMATICALLY IN STACKS WITH SAID FIRST PAIRS OF TERMINALS IN EACH STACK BEING CONNECTED IN SERIES AND ADJACENT SENSORS IN EACH STACK BEING CONNECTED SO THAT SAID CORRESPONDING VOLTAGES THEREOF HAVE OPPOSITE POLARITY.
Claim 2
Dependent Claim
126 words
FLUID-DEPTH SENSING APPARATUS COMPRISING, IN COMBINATION, A PLURALITY OF SENSORS LOGICALLY ORDERED IN AN ARRAY EXPOSED TO A FLUID, EACH OF SAID SENSORS HAVING A SENSING LEVEL, EACH SENSOR HAVING A FIRST PAIR OF TERMINALS AND ADAPTED TO DEVELOP WHEN IMMERSED IN SAID FLUID BELOW SAID SENSING LEVEL A VOLTAGE THEREBETWEEN HAVING A CHARACTERISTIC SUBSTANTIALLY DIFFERENT FROM THE VOLTAGE DEVELOPED WHEN THE FLUID LEVEL IS BELOW SAID SENSING LEVEL, SAID SENSORS BEING ARRANGED IN SAID ARRAY SO THAT ADDITIONAL SENSING LEVELS ARE IMMERSED WHEN THE LEVEL OF SAID FLUID RISES AND BEING CONNECTED SCHEMATICALLY IN STACKS WITH SAID FIRST PAIRS OF TERMINALS IN EACH STACK BEING CONNECTED IN SERIES AND ADJACENT SENSORS IN EACH STACK BEING CONNECTED SO THAT SAID CORRESPONDING VOLTAGES THEREOF HAVE OPPOSITE POLARITY.
References Cited (Backward Citations)
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US2859420A
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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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |