US3187579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-to-frequency transducer
Assignee: ACTON LAB Inc
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Filing: 1962-06-14
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Granted: 1965-06-08
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Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Ferran
- 👤 Anthony J Tessicini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0008
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A PRESSURE-TO-FREQUENCY TRANSDUCER COMPRISING AN ELONGATED HERMETICALLY SEALED HOLLOW MECHANICAL ELEMENT SUPPORTED AT ITS OPPOSITE ENDS AND HAVING A RESONANT FREQUENCY WHICH IS A FUNCTION OF ITS CROS-SECTIONAL CONFIGURATION, SAID HOLLOW ELEMENT ADAPTED TO ALTER ITS CROSS-SECTIONAL CONFIGURATION AS A FUNCTION OF CHANGES IN FLUID PRESSURE, MEANS FOR APPLYING FLUID PRESSURE TO THE INTERIOR OF SAID HOLLOW ELEMENT WHEREBY TO DISTORT ITS CROSS-SECTIONAL CONFIGURATION AND THEREBY CHANGE ITS RESONANT FREQUENCY, MEANS FOR DERIVING AN ELECTRICAL SIGNAL HAVING A FREQUENCY VARYING WITH THE RESONANT FREQUENCY OF SAID HOLLOW ELEMENT, AND MEANS RESPONSIVE TO SAID ELECTRICAL SIGNAL FOR CAUSING SAID HOLLOW ELEMENT TO VIBRATE AT ITS RESONANT FREQUENCY.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |