US3924259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Array of multicellular transducers
Assignee: Raytheon Co
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Filing: 1974-05-15
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Granted: 1975-12-02
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Expires: 1994-05-15
Abstract
Abstract A sonar transducer array in which each transducer is formed of multiple contiguous cells formed by dividing a regular polygonal shaped transducer into triangular sectors or cells. Such multicellular transducers have symmetry in their radiation patterns as measured in planes containing the axis of the transducer and a diameter separating the cells and, accordingly, in a transducer of many cells, there are many diametrical planes of symmetry of radiation pattern. The array is particularly useful for radiating high frequency radiation in which the diameter of the transducer has a length many times greater than a wavelength of the radiation, as occurs in the situation in which a finite amplitude wave is to be launched by the radiation of two beams of high frequency sonic energy.
Inventors
- 👤 John L Butler
- 👤 William M Pozzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:05
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
150 words
A multiple frequency sound system comprising: an array of transducer elements, each of said transducer elements having a substantially triangular shape, each of said transducer elements having a vertex formed by two sides of its radiating aperture, said transducer elements being arranged in subgroupings within said array, the transducer elements in any one of said subgroupings being positioned with their respective vertices substantially contiguous, and each of said subgroupings being oriented within said array such that said subgroupings are contiguous to each other and each of said subgroupings is oriented such that corresponding transducer elements in each of said subgroupings are oriented in the same direction; means coupled to each of said subgroupings for energizing oppositely positioned transducer elements in each of said subgroupings with signals at a first frequency; and means coupled to each of said subgroupings for energizing the remaining transducer elements with signals at a second frequency.
Claim 2
Dependent Claim
150 words
A multiple frequency sound system comprising: an array of transducer elements, each of said transducer elements having a substantially triangular shape, each of said transducer elements having a vertex formed by two sides of its radiating aperture, said transducer elements being arranged in subgroupings within said array, the transducer elements in any one of said subgroupings being positioned with their respective vertices substantially contiguous, and each of said subgroupings being oriented within said array such that said subgroupings are contiguous to each other and each of said subgroupings is oriented such that corresponding transducer elements in each of said subgroupings are oriented in the same direction; means coupled to each of said subgroupings for energizing oppositely positioned transducer elements in each of said subgroupings with signals at a first frequency; and means coupled to each of said subgroupings for energizing the remaining transducer elements with signals at a second frequency.
Claim 3
Dependent Claim
29 words
A system according to claim 1 wherein the wavelengths of said signals at said first and said second frequencies are smaller than a side of said triangular-shaped transducer elements.
Claim 4
Dependent Claim
41 words
A system according to claim 2 further comprising means coupled to said first and to said second energizing means for delaying individual ones of said signals, individual ones of said delayed signals being coupled to individual ones of said transducer elements.
Claim 5
Dependent Claim
18 words
A system according to claim 3 wherein the transducer elements in individual ones of said subgroupings are contiguous.
Claim 6
Dependent Claim
52 words
A system according to claim 4 wherein each of said subgroupings have a square shape, each side of one of said square-shaped subgroupings serving as a base for a plurality of triangular-shaped transducer elements, opposite sides of said square-shaped subgroupings serving as base lines for an equal number of said transducer elements.
Claim 7
Dependent Claim
55 words
A system according to claim 4 wherein each of said subgroupings is hexagonal in shape, a side of one of said hexagonal-shaped subgroupings serving as a base line for a plurality of triangular-shaped transducer elements, oppositely positioned sides of said hexagonal-shaped subgroupings serving as base lines for an equal number of said triangular-shaped transducer elements.
Claim 8
Dependent Claim
18 words
A system according to claim 4 wherein said transducer elements have radiating surfaces positioned along an arcuate surface.
Claim 9
Dependent Claim
30 words
A system according to claim 4 wherein each of said subgroupings is rectangular in shape, each of said rectangular shapes havinG one side which is longer than an adjacent side.
Claim 10
Dependent Claim
14 words
A system according to claim 4 wherein each of said subgroupings is circularly shaped.
Claim 11
Dependent Claim
21 words
A system according to claim 4 wherein each of said subgroupings has a shape in the form of a regular polygon.
Claim 12
Independent Claim
120 words
A system for radiating acoustic energy comprising: an array of radiating elements arranged in a plurality of subgroupings of said radiating elements, each of said radiating elements having a substantially triangular shape, corresponding ones of said triangular-shaped radiating elements in each of said subgroupings being oriented in the same direction, each of said radiating elements being spaced apart by a sound isolator a distance of less than one-quarter wavelength of radiation radiated by said radiating elements, said triangular shape inhibiting the formation of transverse modes of acoustic vibration; and means coupled to individual ones of said radiating elements for energizing said radiating elements to radiate radiation at a wavelength many times shorter than a side of said triangular-shaped radiating element.
Claim 13
Independent Claim
120 words
A system for radiating acoustic energy comprising: an array of radiating elements arranged in a plurality of subgroupings of said radiating elements, each of said radiating elements having a substantially triangular shape, corresponding ones of said triangular-shaped radiating elements in each of said subgroupings being oriented in the same direction, each of said radiating elements being spaced apart by a sound isolator a distance of less than one-quarter wavelength of radiation radiated by said radiating elements, said triangular shape inhibiting the formation of transverse modes of acoustic vibration; and means coupled to individual ones of said radiating elements for energizing said radiating elements to radiate radiation at a wavelength many times shorter than a side of said triangular-shaped radiating element.
Claim 14
Independent Claim
100 words
A system for radiating sonic energy comprising: an array of radiating elements positioned along a surface for radiating sonic energy therefrom; and means for energizing said radiating elements to radiate radiation at a wavelength many times shorter than a side of one of said radiating elements, each of said radiating elements having a substantially triangular shape, and each of said radiating elements being spaced apart by acoustic isolating means a distance less than one-quarter of said wavelength, said triangular shape inhibiting the formation of transverse modes of vibration across a radiating surface of an individual one of said radiating elements.
Claim 15
Independent Claim
100 words
A system for radiating sonic energy comprising: an array of radiating elements positioned along a surface for radiating sonic energy therefrom; and means for energizing said radiating elements to radiate radiation at a wavelength many times shorter than a side of one of said radiating elements, each of said radiating elements having a substantially triangular shape, and each of said radiating elements being spaced apart by acoustic isolating means a distance less than one-quarter of said wavelength, said triangular shape inhibiting the formation of transverse modes of vibration across a radiating surface of an individual one of said radiating elements.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |