Patent US2918376A successfully refreshed from Google Patents.
Patent US3098209A successfully refreshed from Google Patents.
US3098209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transducer
Assignee: Motors Liquidation Co
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Filing: 1960-02-10
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Granted: 1963-07-16
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Expires: 1980-02-10
Abstract
No abstract record available.
Inventors
- 👤 Bryce L Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:55
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0051; G01L9/0057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
IN TRANSDUCER MEANS, A HOLLOW CASING FORMED IN PART OF ELECTRICALLY CONDUCTIVE MATERIAL AND IN PART OF ELECTRICALLY NON-CONDUCTIVE MATERIAL AND HAVING AN ENTRANCE DUCT THROUGH WHICH PRESSURE TO BE MEASURED CAN BE APPLIED, A PISTON FORMED OF ELECTRICALLY INSULATING MATERIAL FITTING SNUGLY WITHIN THE HOLLOW CASING AND MOUNTED FOR AXIAL MOVEMENT THEREIN, BIASING MEANS DIRECTLY ENGAGING ONE END SURFACE OF THE PISTON AND THE INSIDE SURFACE OF ONE END WALL OF THE ELECTRICALLY NON-CONDUCTIVE PART OF THE HOLLOW CASING FOR BIASING SAID PISTON TOWARD ONE END OF ITS TRAVEL, AN ELECTRICAL CONTACT MOUNTED THROUGH SAID WALL AND ENGAGING THE BIASING MEANS TO FORM AN ELECTRICALLY CONDUCTIVE CIRCUIT THEREWITH, A FLEXIBLE DIAPHRAGM MOUNTED ACROSS THE OPPOSITE END OF THE PISTON INSIDE THE CASING AND PRESSING AGAINST THE SAME, A RESISTANCE WIRE HELICALLY WOUND ON A REDUCED SECTION OF SAID PISTONA DN ELECTRICALLY CONNECTED TO THE OPPOSITE END OF THE BIASING MEANS, AND A SPRING BIASED CONTACT MOUNTED IN AND ELECTRICALLY CONNECTED TO THE ELECTRICALLY CONDUCTIVE PORTION OF SAID CASE ENGAGING AND SLIDING OVER SAID RESISTANCE WIRE TO CONNECT A PREDETERMINED AMOUNT OF WIRE IN CIRCUIT DEPENDENT UPON THE AXIAL POSITION OF THE PISTON FOR MEASURING PURPOSES.
Claim 2
Dependent Claim
196 words
IN TRANSDUCER MEANS, A HOLLOW CASING FORMED IN PART OF ELECTRICALLY CONDUCTIVE MATERIAL AND IN PART OF ELECTRICALLY NON-CONDUCTIVE MATERIAL AND HAVING AN ENTRANCE DUCT THROUGH WHICH PRESSURE TO BE MEASURED CAN BE APPLIED, A PISTON FORMED OF ELECTRICALLY INSULATING MATERIAL FITTING SNUGLY WITHIN THE HOLLOW CASING AND MOUNTED FOR AXIAL MOVEMENT THEREIN, BIASING MEANS DIRECTLY ENGAGING ONE END SURFACE OF THE PISTON AND THE INSIDE SURFACE OF ONE END WALL OF THE ELECTRICALLY NON-CONDUCTIVE PART OF THE HOLLOW CASING FOR BIASING SAID PISTON TOWARD ONE END OF ITS TRAVEL, AN ELECTRICAL CONTACT MOUNTED THROUGH SAID WALL AND ENGAGING THE BIASING MEANS TO FORM AN ELECTRICALLY CONDUCTIVE CIRCUIT THEREWITH, A FLEXIBLE DIAPHRAGM MOUNTED ACROSS THE OPPOSITE END OF THE PISTON INSIDE THE CASING AND PRESSING AGAINST THE SAME, A RESISTANCE WIRE HELICALLY WOUND ON A REDUCED SECTION OF SAID PISTONA DN ELECTRICALLY CONNECTED TO THE OPPOSITE END OF THE BIASING MEANS, AND A SPRING BIASED CONTACT MOUNTED IN AND ELECTRICALLY CONNECTED TO THE ELECTRICALLY CONDUCTIVE PORTION OF SAID CASE ENGAGING AND SLIDING OVER SAID RESISTANCE WIRE TO CONNECT A PREDETERMINED AMOUNT OF WIRE IN CIRCUIT DEPENDENT UPON THE AXIAL POSITION OF THE PISTON FOR MEASURING PURPOSES.
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |