US4566333A
Expired / Lapsed
US
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Focusing ultrasonic transducer element
Assignee: Individual
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Filing: 1984-07-18
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Granted: 1986-01-28
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Expires: 2004-07-18
Abstract
Abstract A focusing ultrasonic transducer element comprising an ultrasonic propagating medium and an ultrasonic transmitting and receiving transducer. The ultrasonic propagating medium is provided with a convex spherical or cylindrical portion in one end and a concave spherical or cylindrical portion in the other end.
Inventors
- 👤 Noriyoshi Chubachi
- 👤 Junichi Kushibiki
- 👤 Kouichi Nakanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/22; G01N29/221; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A focusing ultrasonic transducer element comprising an ultrasonic propagating medium having a convex spherical portion with a convex spherical surface in one end thereof and a concave spherical portion with a concave spherical surface in the other end thereof and an ultrasonic transmitting and receiving transducer attached on the surface of said convex spherical portion, an axis of symmetry of said convex spherical portion being aligned with that of said concave spherical portion and a center point of said convex spherical portion being offset from that of said concave spherical portion.
Claim 2
Dependent Claim
91 words
A focusing ultrasonic transducer element comprising an ultrasonic propagating medium having a convex spherical portion with a convex spherical surface in one end thereof and a concave spherical portion with a concave spherical surface in the other end thereof and an ultrasonic transmitting and receiving transducer attached on the surface of said convex spherical portion, an axis of symmetry of said convex spherical portion being aligned with that of said concave spherical portion and a center point of said convex spherical portion being offset from that of said concave spherical portion.
Claim 3
Dependent Claim
18 words
A focusing ultrasonic transducer element according to claim 1, wherein said ultrasonic propagating medium is comprised of sapphire.
Claim 4
Dependent Claim
19 words
A focusing ultrasonic transducer element according to claim 1, wherein said ultrasonic propagating medium is comprised of fused quartz.
Claim 5
Dependent Claim
22 words
A focusing ultrasonic transducer element according to claim 1, wherein an acoustic impedance matching layer is attached on said concave spherical portion.
Claim 6
Dependent Claim
91 words
A focusing ultrasonic transducer element comprising an ultrasonic propagating medium having a convex cylindrical portion with a convex cylindrical surface in one end thereof and a concave cylindrical portion having a concave cylindrical surface in the other end thereof and an ultrasonic transmitting and receiving transducer attached on the surface of said convex cylindrical portion, an axis of symmetry of said convex cylindrical portion being aligned with that of said concave cylindrical portion and a center point of said convex cylindrical portion being offset from that of said concave cylindrical portion.
Claim 7
Dependent Claim
91 words
A focusing ultrasonic transducer element comprising an ultrasonic propagating medium having a convex cylindrical portion with a convex cylindrical surface in one end thereof and a concave cylindrical portion having a concave cylindrical surface in the other end thereof and an ultrasonic transmitting and receiving transducer attached on the surface of said convex cylindrical portion, an axis of symmetry of said convex cylindrical portion being aligned with that of said concave cylindrical portion and a center point of said convex cylindrical portion being offset from that of said concave cylindrical portion.
Claim 8
Dependent Claim
18 words
A focusing ultrasonic transducer element according to claim 5, wherein said ultrasonic propagating medium is comprised of sapphire.
Claim 9
Dependent Claim
19 words
A focusing ultrasonic transducer element according to claim 5, wherein said ultrasonic propagating medium is comprised of fused quartz.
Claim 10
Dependent Claim
22 words
A focusing ultrasonic transducer element according to claim 5, wherein an acoustic impedance matching layer is attached on said concave cylindrical portion.
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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |