US3093806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transducer
Assignee: Individual
•
Filing: 1961-10-24
•
Granted: 1963-06-11
•
Expires: 1981-10-24
Abstract
No abstract record available.
Inventors
- 👤 Robert P Gutterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A TRANSDUCER FOR MEASURING PRESSURE CHANGES WHICH COMPRISES: AT LEAST TWO PLATES, EACH HAVING AN ELECTRICAL RESISTANCE CHARACTERISTIC INVARIABLE WITH PRESSURE, MEANS SPACING AND INSULATING SAID PLATES FROM EACH OTHER SOLELY AT THEIR PERIPHERY AND FORMING A HERMETICALLY SEALED SOLELY GAS-FILLED SPACE BETWEEN SAID PLATES, AT LEAST ONE OF SAID PLATES BEING RESILIENTLY FLEXIBLE IN RESPONSE TO APPLIED EXTERNAL PRESSURE TO PLACE THE SAME IN DIRECT ELECTRICAL CONTACT WITH THE OTHER OF SAID PLATES, AND FURTHER RESILIENTLY FLEXIBLY RESPONSIVE TO INCREASED PRESSURE THEREON IN EXCESS OF THE PRESSURE IN SAID GAS-FILLED SPACE TO INCREASE THE AREA OF CONTACT BETWEEN SAID PLATES, THE ELECTRICAL RESISTANCE BETWEEN SAID PLATES VARYING SOLELY AS THE AREA OF CONTACT THEREBETWEEN VARIES, AND THE RATIO OF THE MAXIMUM PLANAR DIMENSION OF THE PLATES TO THE WIDTH DIMENSION OF THE SPACE BETWEEN SAID PLATES IS AT LEAST 10:1.
Claim 2
Dependent Claim
141 words
A TRANSDUCER FOR MEASURING PRESSURE CHANGES WHICH COMPRISES: AT LEAST TWO PLATES, EACH HAVING AN ELECTRICAL RESISTANCE CHARACTERISTIC INVARIABLE WITH PRESSURE, MEANS SPACING AND INSULATING SAID PLATES FROM EACH OTHER SOLELY AT THEIR PERIPHERY AND FORMING A HERMETICALLY SEALED SOLELY GAS-FILLED SPACE BETWEEN SAID PLATES, AT LEAST ONE OF SAID PLATES BEING RESILIENTLY FLEXIBLE IN RESPONSE TO APPLIED EXTERNAL PRESSURE TO PLACE THE SAME IN DIRECT ELECTRICAL CONTACT WITH THE OTHER OF SAID PLATES, AND FURTHER RESILIENTLY FLEXIBLY RESPONSIVE TO INCREASED PRESSURE THEREON IN EXCESS OF THE PRESSURE IN SAID GAS-FILLED SPACE TO INCREASE THE AREA OF CONTACT BETWEEN SAID PLATES, THE ELECTRICAL RESISTANCE BETWEEN SAID PLATES VARYING SOLELY AS THE AREA OF CONTACT THEREBETWEEN VARIES, AND THE RATIO OF THE MAXIMUM PLANAR DIMENSION OF THE PLATES TO THE WIDTH DIMENSION OF THE SPACE BETWEEN SAID PLATES IS AT LEAST 10:1.
References Cited (Backward Citations)
US2167254A
Cited
US2367570A
Cited
US2472214A
Cited
US2694128A
Cited
US2752558A
Cited
FR2177677A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |