US3074268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensation for transmission through liquid
Assignee: Sperry Products Inc
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Filing: 1958-08-21
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Granted: 1963-01-22
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Expires: 1978-08-21
Abstract
No abstract record available.
Inventors
- 👤 Willard S Rafferty
- 👤 Raymond E Sansom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:45
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/30; G01N29/32; G01N2291/00; G01N2291/04; G01N2291/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A DEVICE FOR TRANSMITTING ULTRASONIC VIBRATIONS THROUGH A LIQUID MEDIUM INTO THE ENTRANT SURFACE OF A TEST SPECIMEN AT AN ANGLE TO NORMAL RELATIVE TO THE ENTRANT SURFACE THEREOF AND INDEPENDENT OF VARIATIONS IN SOUND VELOCITY IN THE MEDIUM CAUSED BY TEMPERATURE CHANGES, WHICH COMPRISES A PIEZOELECTRIC TRANSDUCER, MEANS FOR ULTRASONICALLY VIBRATING SAID TRANSDUCER, A SOLID MEMBER CONSTRUCTED OF A MATERIAL THROUGH WHICH ULTRASONIC VIBRATIONS MAY PROPAGATE POSITIONED IN THE LIQUID MEDIUM AND HAVING ONE FACE AT AN ANGLE TO NORMAL, THE TRANSDUCER BEING EFFECTIVELY COUPLED TO SAID ANGLE FACE, SAID MEMBER HAVING A SECOND FACE THROUGH WHICH THE VIBRATIONS ARE TRANSMITTED, THE SECOND FACE BEING PARALLEL TO THE ENTRANT SURFACE OF THE TEST SPECIMEN, AND A QUANTITY OF THE LIQUID MEDIUM INTERPOSED BETWEEN SAID TRANSDUCER AND SAID ENTRANT SURFACE OF SAID TEST SPECIMEN EXHIBITING A TRANSIT TIME FOR SAID VIBRATIONS AT LEAST EQUAL TO THE TRANSIT TIME OF SUCH VIBRATIONS IN THE TEST SPECIMEN.
Claim 2
Independent Claim
155 words
A DEVICE FOR TRANSMITTING ULTRASONIC VIBRATIONS THROUGH A LIQUID MEDIUM INTO THE ENTRANT SURFACE OF A TEST SPECIMEN AT AN ANGLE TO NORMAL RELATIVE TO THE ENTRANT SURFACE THEREOF AND INDEPENDENT OF VARIATIONS IN SOUND VELOCITY IN THE MEDIUM CAUSED BY TEMPERATURE CHANGES, WHICH COMPRISES A PIEZOELECTRIC TRANSDUCER, MEANS FOR ULTRASONICALLY VIBRATING SAID TRANSDUCER, A SOLID MEMBER CONSTRUCTED OF A MATERIAL THROUGH WHICH ULTRASONIC VIBRATIONS MAY PROPAGATE POSITIONED IN THE LIQUID MEDIUM AND HAVING ONE FACE AT AN ANGLE TO NORMAL, THE TRANSDUCER BEING EFFECTIVELY COUPLED TO SAID ANGLE FACE, SAID MEMBER HAVING A SECOND FACE THROUGH WHICH THE VIBRATIONS ARE TRANSMITTED, THE SECOND FACE BEING PARALLEL TO THE ENTRANT SURFACE OF THE TEST SPECIMEN, AND A QUANTITY OF THE LIQUID MEDIUM INTERPOSED BETWEEN SAID TRANSDUCER AND SAID ENTRANT SURFACE OF SAID TEST SPECIMEN EXHIBITING A TRANSIT TIME FOR SAID VIBRATIONS AT LEAST EQUAL TO THE TRANSIT TIME OF SUCH VIBRATIONS IN THE TEST SPECIMEN.
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |