US3936791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear array ultrasonic transducer
Assignee: Australian Government
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Filing: 1973-09-13
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Granted: 1976-02-03
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Expires: 1993-09-13
Abstract
Abstract Apparatus for ultrasonic examination of objects, particularly in medical diagnostic examination, is comprised of a phased array transducer capable of focusing the beam of ultrasonic pulses in the longitudinal plane of the transducer, and focusing means to focus the dimensions of the beam normal to the longitudinal plane.
Inventors
- 👤 George Kossoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/34; G10K11/341; G10K11/345; A; A61; A61B; A61B8/00; A61B8/08; G01; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/22; G01N29/26; G01N29/262
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
Apparatus for the ultrasonic examination of an object comprising: a phased array transducer comprising a plurality of transducer elements for directing pulses of ultrasonic energy along a beam into the said object; means for exciting the elements of the array in phased relation for focusing and scanning the beam in the longitudinal plane of the transducer; and focusing means for focusing the dimensions of said beam normal to the longitudinal plane of the transducer.
Claim 2
Dependent Claim
74 words
Apparatus for the ultrasonic examination of an object comprising: a phased array transducer comprising a plurality of transducer elements for directing pulses of ultrasonic energy along a beam into the said object; means for exciting the elements of the array in phased relation for focusing and scanning the beam in the longitudinal plane of the transducer; and focusing means for focusing the dimensions of said beam normal to the longitudinal plane of the transducer.
Claim 3
Dependent Claim
41 words
Apparatus as claimed in claim 1 characterized in that: said phased array transducer is comprised of a plurality of narrow rectangular elements, and said means for focusing and scanning the beam comprises means for energising said elements at progressively different times.
Claim 4
Dependent Claim
16 words
Apparatus as claimed in claim 1 characterized in that said focusing means comprises a cylindrical lens.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |