GB963783A - Improvements in or relating to electro-acoustic transducers for use under water - Google Patents
Improvements in or relating to electro-acoustic transducers for use under waterInfo
- Publication number
- GB963783A GB963783A GB3431462A GB3431462A GB963783A GB 963783 A GB963783 A GB 963783A GB 3431462 A GB3431462 A GB 3431462A GB 3431462 A GB3431462 A GB 3431462A GB 963783 A GB963783 A GB 963783A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- rim
- electro
- outside
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title 1
- 239000004020 conductor Substances 0.000 abstract 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002113 barium titanate Inorganic materials 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000007799 cork Substances 0.000 abstract 1
- 229920002457 flexible plastic Polymers 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000004382 potting Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
963,783. Electro-acoustic transducers. ERIE RESISTOR CORPORATION. Sept. 7, 1962 [Sept. 22, 1961], No. 34314/62. Heading H4J. An electro-acoustic transducer comprises a plate 1, Figs. 1, 2, having a rim fastened to the outside of the hull 2 of a boat to cover a circular opening therein with the rim of the plate 1 overlapping the outside of the hull, an annular groove 12 in a major surface of the plate 1 defining a centre section within the rim of the plate 1 of smaller diameter than said opening and capable of vibration relative to the rim, a piezo-electric element 10 secured to the plate 1 within the centre section, a flexible plastics housing 4 of smaller outer diameter than the diameter of said opening and secured to said major surface of the plate 1 around said groove 12, a metal bridge member 7 fastened to the plate 1 outside the groove 12 and serving as an earth connection, and a cable 5 having an earth conductor 6 connected to bridge member 7 and another conductor 8 connected to the piezoelectric element 10. Element 10 is of barium titanate or other ferro-electric ceramic polarized in the thickness direction. Housing 4 is of epoxy potting compound. Element 10 is surrounded by cork or other air filled material 15 to eliminate transmission of vibrations in the radial mode. Plate 1 and element 10 are equal to a quarter wavelength of the operating frequency.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13999461A | 1961-09-22 | 1961-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB963783A true GB963783A (en) | 1964-07-15 |
Family
ID=22489241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3431462A Expired GB963783A (en) | 1961-09-22 | 1962-09-07 | Improvements in or relating to electro-acoustic transducers for use under water |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB963783A (en) |
-
1962
- 1962-09-07 GB GB3431462A patent/GB963783A/en not_active Expired
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