US3367183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring liquid levels
Assignee: PYROFAX GAS CORP
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Filing: 1964-05-19
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Granted: 1968-02-06
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 George R Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:26
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
APPARATUS FOR MEASURING THE LEVEL OF A LIQUID, POSSESSING DIELECTRIC PROPERTIES, IN A PLURALITY OF TANKS INCLUDING TANKS AT WIDELY SEPARATED LOCATIONS, A VARIBLE CAPACITANCE PROBE EXTENDING THROUGH AN UPPER PART OF EACH TANK AND DOWNWARDLY IN THE TANK FOR IMMERSION IN LIQUID STORED WITHIN THE TANK, THE PROBE INCLUDING TWO CLOSELY SPACED CONDENSER ELEMENTS, A FITTING AT THE UPPER END OF THE TANK AND INCLUDING A CONNECTOR TO WHICH THE CONDENSER ELEMENTS ARE CONNECTED, A PORTABLE MEASURING DEVICE COMPRISING AN ELECTRIC CIRCUIT AND INDICATING MEANS IN THE CIRCUIT FOR MEASURING THE CAPACITANCE OF THE PROBE AT EACH TANK, THE ELECTRIC CIRCUIT INCLUDING TWO CONDUCTORS AND A CONNECTOR TO WHICH SAID CONDUCTORS CONNECT AND WHICH IS COMPLEMENTARY TO THE CONNECTOR ON EACH TANK FOR CONNECTING THE MEASURING DEVICE WITH EACH PROBE, THE FITTING AT THE UPPER END OF EACH TANK INCLUDING A NIPPLE THAT SCREWS INTO A SIDE OF THE TANK AND TO THE INNER END OF WHICH ONE OF THE CONDENSER ELEMENTS IS CONNECTED, A CLAMPING NUT THAT FITS OVER THE OUTER END OF THE NIPPLE, A RESILIENT SLEEVE THAT IS WITHIN THE CLAMPING NUT AND SURROUNDING AN UPPER PART OF THE OTHER CONDENSER ELEMENT THAT EXTENDS THROUGH AND BEYOND THE UPPER END OF THE
Claim 2
Dependent Claim
206 words
APPARATUS FOR MEASURING THE LEVEL OF A LIQUID, POSSESSING DIELECTRIC PROPERTIES, IN A PLURALITY OF TANKS INCLUDING TANKS AT WIDELY SEPARATED LOCATIONS, A VARIBLE CAPACITANCE PROBE EXTENDING THROUGH AN UPPER PART OF EACH TANK AND DOWNWARDLY IN THE TANK FOR IMMERSION IN LIQUID STORED WITHIN THE TANK, THE PROBE INCLUDING TWO CLOSELY SPACED CONDENSER ELEMENTS, A FITTING AT THE UPPER END OF THE TANK AND INCLUDING A CONNECTOR TO WHICH THE CONDENSER ELEMENTS ARE CONNECTED, A PORTABLE MEASURING DEVICE COMPRISING AN ELECTRIC CIRCUIT AND INDICATING MEANS IN THE CIRCUIT FOR MEASURING THE CAPACITANCE OF THE PROBE AT EACH TANK, THE ELECTRIC CIRCUIT INCLUDING TWO CONDUCTORS AND A CONNECTOR TO WHICH SAID CONDUCTORS CONNECT AND WHICH IS COMPLEMENTARY TO THE CONNECTOR ON EACH TANK FOR CONNECTING THE MEASURING DEVICE WITH EACH PROBE, THE FITTING AT THE UPPER END OF EACH TANK INCLUDING A NIPPLE THAT SCREWS INTO A SIDE OF THE TANK AND TO THE INNER END OF WHICH ONE OF THE CONDENSER ELEMENTS IS CONNECTED, A CLAMPING NUT THAT FITS OVER THE OUTER END OF THE NIPPLE, A RESILIENT SLEEVE THAT IS WITHIN THE CLAMPING NUT AND SURROUNDING AN UPPER PART OF THE OTHER CONDENSER ELEMENT THAT EXTENDS THROUGH AND BEYOND THE UPPER END OF THE
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) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |