US3242731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel sensing device
Assignee: Individual
•
Filing: 1963-08-09
•
Granted: 1966-03-29
•
Expires: 1983-08-09
Abstract
No abstract record available.
Inventors
- 👤 James W Colgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A FUEL SENSING DEVICE COMMUNICATING WITH A FUEL STORAGE AND SUPPLY TANK FOR INDICATION OF THE FUEL CONTENT IN THE TANK AT A REMOTE LOCATION, COMPRISING A CONCAVE SHELL SEALINGLY SECURED TO THE BOTTOM OF A FUEL TANK HAVING AN OPENING COVERED THEREBY, A FLEXIBLE DIAPHRAGM SECURED TO ITS PERIPHERY OF THE PERIPHERY OF THE SHELL AND EXPOSED TO THE FUEL IN THE TANK THROUGH THE OPENING, A VARIABLE RESISTOR RIGIDLY MOUNTED WITHIN SAID GROUNDED TO THE SHELL BELOW SAID DIAPHRAGM, A CURVED METAL LEAF SPRING HAVING ONE END SECURED TO ONE END OF THE RESISTOR, SAID SPRING CURVING UPWARDLY AWAY FROM THE RESISTOR WITH THE FREE END CONTACTING THE DIAPHRAGM, AN INDICATOR GUAGE REMOTE FROM THE SHELL ELECTRICALLY CONNECTED TO THE OPPOSITE END OF THE RESISTOR, AND A POWER SOURCE COMMUNICATING WITH THE GUAGE SUCH THAT THE GUAGE IS RESPONSIVE TO CURRENT FLOW THROUGH THE RESISTOR.
Claim 2
Dependent Claim
147 words
A FUEL SENSING DEVICE COMMUNICATING WITH A FUEL STORAGE AND SUPPLY TANK FOR INDICATION OF THE FUEL CONTENT IN THE TANK AT A REMOTE LOCATION, COMPRISING A CONCAVE SHELL SEALINGLY SECURED TO THE BOTTOM OF A FUEL TANK HAVING AN OPENING COVERED THEREBY, A FLEXIBLE DIAPHRAGM SECURED TO ITS PERIPHERY OF THE PERIPHERY OF THE SHELL AND EXPOSED TO THE FUEL IN THE TANK THROUGH THE OPENING, A VARIABLE RESISTOR RIGIDLY MOUNTED WITHIN SAID GROUNDED TO THE SHELL BELOW SAID DIAPHRAGM, A CURVED METAL LEAF SPRING HAVING ONE END SECURED TO ONE END OF THE RESISTOR, SAID SPRING CURVING UPWARDLY AWAY FROM THE RESISTOR WITH THE FREE END CONTACTING THE DIAPHRAGM, AN INDICATOR GUAGE REMOTE FROM THE SHELL ELECTRICALLY CONNECTED TO THE OPPOSITE END OF THE RESISTOR, AND A POWER SOURCE COMMUNICATING WITH THE GUAGE SUCH THAT THE GUAGE IS RESPONSIVE TO CURRENT FLOW THROUGH THE RESISTOR.
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |