GB600248A - Improvements in or relating to electromechanical transducers embodying piezoelectriccrystals - Google Patents
Improvements in or relating to electromechanical transducers embodying piezoelectriccrystalsInfo
- Publication number
- GB600248A GB600248A GB10690/44A GB1069044A GB600248A GB 600248 A GB600248 A GB 600248A GB 10690/44 A GB10690/44 A GB 10690/44A GB 1069044 A GB1069044 A GB 1069044A GB 600248 A GB600248 A GB 600248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- cork
- movement
- elements
- piezo
- 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
- 239000007799 cork Substances 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 3
- 241000239290 Araneae Species 0.000 abstract 1
- 239000004359 castor oil Substances 0.000 abstract 1
- 235000019438 castor oil Nutrition 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0648—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of rectangular shape
Abstract
600,248. Sound emitting and receiving apparatus. BRUSH DEVELOPMENT CO. June 2, 1944, No. 10690. Convention date, March 26, 1942. [Glasn 40 (iv)] [Also in Group XL (c)] A sub-aqueous compressional wave sender or receiver comprises a cup-shaped metal base 20 having mounted on it an insulating ring 25 to form an annular space in which are disposed radially a number of piezo-electric elements 10 having edge electrodes 12, 13 engaged in contact clips on ring 25 and casing 20 respectively. The elements are connected in parallel to conductors 36, 37 of a cable 35 which passes through a fluid-tight seal in the base of the casing. The casing is closed by a rubber diaphragm 44 held by a clamping ring 46, and is filled with castor oil through a plug 43. The useful piezo-electric movement of the crystal elements is along the axis of the instrument. Movement in a direction normal to the major surfaces is decoupled from the oil filling and hence from the useful movement, by covering the major faces with a layer of a cork and rubber plastic. An external layer of cork 34 reduces radiation from the rear face of the casing 20. In a modification (Figs. 5 and 6, not shown), instead of coating the crystal faces, the crystals are assembled in radial slots in a spider formed of a cork and rubber composition. The Specification as open to inspection under Sect. 91 also describes the subject-matter of Specification 600,300. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43630442A | 1942-03-26 | 1942-03-26 | |
| US519069A US2497680A (en) | 1942-03-26 | 1944-01-19 | Piezoelectric crystal unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB600248A true GB600248A (en) | 1948-04-05 |
Family
ID=27030900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10690/44A Expired GB600248A (en) | 1942-03-26 | 1944-06-02 | Improvements in or relating to electromechanical transducers embodying piezoelectriccrystals |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2497680A (en) |
| GB (1) | GB600248A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2736101A (en) * | 1956-02-28 | Tramming tool | ||
| US2576155A (en) * | 1946-03-26 | 1951-11-27 | Horace M Trent | Submarine compressional wave receptive apparatus |
| US2587304A (en) * | 1948-11-17 | 1952-02-26 | Gen Electric | Crystal pressure gauge |
| US2571899A (en) * | 1948-12-11 | 1951-10-16 | Westinghouse Electric Corp | Vibration pickup |
| FR1024579A (en) * | 1950-09-14 | 1953-04-02 | Acec | Elastic wave probe |
| US2842685A (en) * | 1955-12-23 | 1958-07-08 | Gulton Ind Inc | Bender tuned array |
| FR1145638A (en) * | 1956-03-14 | 1957-10-28 | Realisations Ultrasoniques Sa | Multi-element transducer for the examination of solids by elastic waves and method for its manufacture |
| US3113287A (en) * | 1956-03-29 | 1963-12-03 | Raytheon Co | Electroacoustical transducer mounted on boat hull |
| US3212056A (en) * | 1961-06-22 | 1965-10-12 | Electronic Res Associates Inc | Dual transducer device |
| DE1591330B2 (en) * | 1966-09-30 | 1972-05-25 | Nippon Electric Co. Ltd., Tokio | PIEZOELECTRIC BENDING VIBRATOR |
| US3731267A (en) * | 1971-01-04 | 1973-05-01 | O Brandt | Electro-acoustic transducer |
| US4821838A (en) * | 1987-10-30 | 1989-04-18 | Hewlett-Packard Company | Acoustic damper |
| US7191787B1 (en) | 2003-02-03 | 2007-03-20 | Lam Research Corporation | Method and apparatus for semiconductor wafer cleaning using high-frequency acoustic energy with supercritical fluid |
| US7237564B1 (en) * | 2003-02-20 | 2007-07-03 | Lam Research Corporation | Distribution of energy in a high frequency resonating wafer processing system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE20680E (en) * | 1928-09-12 | 1938-03-29 | Piezoelectric device | |
| US1889614A (en) * | 1930-06-16 | 1932-11-29 | Gen Electric | Sound wave apparatus |
| US2406767A (en) * | 1932-10-22 | 1946-09-03 | Harvey C Hayes | Directive transceiver for sound |
| GB527562A (en) * | 1938-05-25 | 1940-10-11 | Reimar Pohlman | Improvements in or relating to massage apparatus |
| US2270902A (en) * | 1939-11-25 | 1942-01-27 | George A Rubissow | Antivibration means and method of use of same |
-
1944
- 1944-01-19 US US519069A patent/US2497680A/en not_active Expired - Lifetime
- 1944-06-02 GB GB10690/44A patent/GB600248A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2497680A (en) | 1950-02-14 |
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