US3928839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonar system
Assignee: United States Department of the Navy
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Filing: 1968-09-05
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Granted: 1975-12-23
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Expires: 1988-09-05
Abstract
Abstract An echo ranging system has a broad investigative beam pattern comprised of a plurality of adjacent narrow investigative beam patterns, each differing in frequency from the adjoining pattern. Said investigative beam pattern is formed by a plurality of individual, shaded, electro-acoustic transducers. Each of said transducers being electrically connected to separate individual electronic means. Plural circuit means drive groups comprised of nonadjacent ones of said transducers and connected electronic means at separate frequencies. A plurality of receiving channels are connected to each of said individual electronic means.
Inventors
- 👤 Henry L Warner
- 👤 Ted I Haney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8902
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
386 words
An echo-search-ranging system comprising: a plurality of reversible, piezoelectric transducer elements mounted in a contiguous orientation with respect to one another, each of said transducer elements constructed to radiate and receive compressional wave energy at a one of three predetermined frequencies and different from the frequencies of the transducer elements adjacent thereto; a refractive fluid filled acoustic lens located in contiguous relationship with said plurality of transducer elements in such a manner as to direct compressional wave energy from and returned reflections to said reversible transducer elements, thereby creating a composite volume of predetermined shape comprised of individual volumes associated with each of said transducer elements; a plurality of three winding electrical inductors corresponding in number to said plurality of reversible transducing elements and having a first winding of each thereof connected to one of said transducer elements for conducting electrical signals thereto and therefrom; first electrical oscillator means having a first of said three predetermined frequencies electrically joined to the second windings of the aforesaid three winding electrical inductors connected to transducer elements of said first frequency for timely supplying a burst of electrical energy of said first frequency thereto for transmission thereby to the aforesaid transducer element connected to said first winding thereof; second electrical oscillator means having a second frequency of said three predetermined frequencies electrically joined to the second windings of the aforesaid three winding electrical inductors connected to transducer elements of said second frequency for timely supplying a burst of electrical energy of said second frequqency thereto for transmission thereby to the aforesaid transducer element connected to said first winding thereof; third electrical oscillator means having a third frequency electrically joined to the second winding of the remaining ones of the aforesaid three winding electrical inductors which are connected to transducer elements of said third frequency for timely supplying a burst of electrical energy of said third frequency thereto for transmission thereby to the aforesaid transducer element connected to said first winding thereof; a display circuit having a plurality of input channels corresponding in number to said three winding inductors and electrically joined to said third windings thereof for displaying echo signals from said transducer elements; and an electrical timing circuit electrically joined to said display circuit and said first, second, and third oscillator means for establishing a time relationship therebetween.
Claim 2
Dependent Claim
386 words
An echo-search-ranging system comprising: a plurality of reversible, piezoelectric transducer elements mounted in a contiguous orientation with respect to one another, each of said transducer elements constructed to radiate and receive compressional wave energy at a one of three predetermined frequencies and different from the frequencies of the transducer elements adjacent thereto; a refractive fluid filled acoustic lens located in contiguous relationship with said plurality of transducer elements in such a manner as to direct compressional wave energy from and returned reflections to said reversible transducer elements, thereby creating a composite volume of predetermined shape comprised of individual volumes associated with each of said transducer elements; a plurality of three winding electrical inductors corresponding in number to said plurality of reversible transducing elements and having a first winding of each thereof connected to one of said transducer elements for conducting electrical signals thereto and therefrom; first electrical oscillator means having a first of said three predetermined frequencies electrically joined to the second windings of the aforesaid three winding electrical inductors connected to transducer elements of said first frequency for timely supplying a burst of electrical energy of said first frequency thereto for transmission thereby to the aforesaid transducer element connected to said first winding thereof; second electrical oscillator means having a second frequency of said three predetermined frequencies electrically joined to the second windings of the aforesaid three winding electrical inductors connected to transducer elements of said second frequency for timely supplying a burst of electrical energy of said second frequqency thereto for transmission thereby to the aforesaid transducer element connected to said first winding thereof; third electrical oscillator means having a third frequency electrically joined to the second winding of the remaining ones of the aforesaid three winding electrical inductors which are connected to transducer elements of said third frequency for timely supplying a burst of electrical energy of said third frequency thereto for transmission thereby to the aforesaid transducer element connected to said first winding thereof; a display circuit having a plurality of input channels corresponding in number to said three winding inductors and electrically joined to said third windings thereof for displaying echo signals from said transducer elements; and an electrical timing circuit electrically joined to said display circuit and said first, second, and third oscillator means for establishing a time relationship therebetween.
Claim 3
Dependent Claim
18 words
An echo-search-ranging system according to claim 1 in which said display circuits comprises a cathode ray display device.
Claim 4
Dependent Claim
16 words
An echo-search-ranging system according to claim 1 wherein said display device comprises an electroilluminescent display device.
Claim 5
Dependent Claim
19 words
An echo-search-ranging system according to claim 1 wherein said reversible transducer means are shaded to modify their directivity response.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |