US4187556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-acoustic transducer with line focus
Assignee: United States Department of the Navy
•
Filing: 1960-04-05
•
Granted: 1980-02-05
•
Expires: 1980-04-05
Abstract
Abstract 1. A transducer for translating compressional waves in a liquid medium intolectrical waves in an electric circuit and vice versa comprising an elongated transducer element having a spherically concave active face disposed with its smaller dimension between two circles of latitude spaced apart in a hemisphere a distance substantially equal to the wavelength in the liquid medium of a predetermined operating frequency.
Inventors
- 👤 Charles H. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
62 words
A transducer for translating compressional waves in a liquid medium into electrical waves in an electric circuit and vice versa comprising an elongated transducer element having a spherically concave active face disposed with its smaller dimension between two circles of latitude spaced apart in a hemisphere a distance substantially equal to the wavelength in the liquid medium of a predetermined operating frequency.
Claim 2
Dependent Claim
62 words
A transducer for translating compressional waves in a liquid medium into electrical waves in an electric circuit and vice versa comprising an elongated transducer element having a spherically concave active face disposed with its smaller dimension between two circles of latitude spaced apart in a hemisphere a distance substantially equal to the wavelength in the liquid medium of a predetermined operating frequency.
Claim 3
Dependent Claim
30 words
An electro-acoustic transducer comprising a plurality of transducer elements having elongated active faces tangent to and whose longitudinal center lines lie substantially in a circle of latitude of a sphere.
Claim 4
Dependent Claim
30 words
An electro-acoustic transducer comprising a plurality of transducer elements having elongated active faces tangent to and whose longitudinal center lines lie substantially in a circle of latitude of a sphere.
Claim 5
Dependent Claim
72 words
An electro-acoustic transducer comprising a plurality of transducer elements having elongated active faces in end-to-end relation along a center line lying on the surface of a sphere and on the perimeter of the base of a right circular cone having its vertex coincident with the center of said sphere, said transducer elements upon being energized in phase will transmit acoustic energy focused along a line coincident with the axis of said cone.
Claim 6
Dependent Claim
72 words
An electro-acoustic transducer comprising a plurality of transducer elements having elongated active faces in end-to-end relation along a center line lying on the surface of a sphere and on the perimeter of the base of a right circular cone having its vertex coincident with the center of said sphere, said transducer elements upon being energized in phase will transmit acoustic energy focused along a line coincident with the axis of said cone.
Claim 7
Dependent Claim
79 words
An electro-acoustic transducer array capable of focusing compressional wave energy along a longitudinal axis in a liquid medium when energized with electrical energy at a predetermined operating frequency comprising a plurality of elongated transducer elements arranged in end-to-end relation along and tangent to a circle of latitude of a sphere, the width of said elements being disposed between two circles of latitude spaced a latitude dimension substantially equal to the wavelength in the liquid medium of said operating frequency.
Claim 8
Dependent Claim
79 words
An electro-acoustic transducer array capable of focusing compressional wave energy along a longitudinal axis in a liquid medium when energized with electrical energy at a predetermined operating frequency comprising a plurality of elongated transducer elements arranged in end-to-end relation along and tangent to a circle of latitude of a sphere, the width of said elements being disposed between two circles of latitude spaced a latitude dimension substantially equal to the wavelength in the liquid medium of said operating 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) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |