GB440330A - Improvements in piezo-electric devices for converting electrical oscillations into mechanical vibrations - Google Patents
Improvements in piezo-electric devices for converting electrical oscillations into mechanical vibrationsInfo
- Publication number
- GB440330A GB440330A GB15458/34A GB1545834A GB440330A GB 440330 A GB440330 A GB 440330A GB 15458/34 A GB15458/34 A GB 15458/34A GB 1545834 A GB1545834 A GB 1545834A GB 440330 A GB440330 A GB 440330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clamped
- vibratory
- crystal
- pair
- 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
- 230000010355 oscillation Effects 0.000 title 1
- 239000013078 crystal Substances 0.000 abstract 6
- 238000010276 construction Methods 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 4
- 230000005684 electric field Effects 0.000 abstract 3
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 206010011878 Deafness Diseases 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 abstract 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
440,330. Deaf-aids; loud-speakers ; receivers ; phonographic recorders. SONOTONE CORPORATION, 19, West 44th Street, New York, U.S.A. May 23, 1934, No. 15458. Convention date, May 24, 1933. [Class 40 (iv)] [See also Group XL] A device responsive to electrical oscillatory energy for imparting mechanical vibrations to a vibratory load, more particularly for use in connection with boneconduction hearing aid devices,loud-speakers,telephone receivers and phonographic recorders, comprises a piezoelectrically driven vibratory member and means for coupling the vibratory load to a portion of said vibratory member which portion vibrates with a relatively small amplitude and is subjected to vibratory forces exerted by at least one freely projecting portion of said vibratory member vibrating with relatively large amplitude for imparting vibratory energy produced by said freely projecting vibratory member portion to said load. The piezo - electric body may consist of a pair of superposed bars of Rochelle salt clamped at one end about which they are adapted to bend under the influence of an applied electric field or a pair of superposed rectangular plates clamped at one corner and adapted to twist under the influence of an electric field. Weights may be attached to the freely oscillating end or corners. Piezoelectric bodies comprising four, six or more crystal layers are also described whilst, according to a further modification, a single crystal strip may have its surface united to a metal strip. Fig. 6 shows a construction of bone conduction hearing aid device comprising a piezo-electric crystal unit 56 consisting of two superposed crystal strips carrying outer electrode sheets 59, 60 and an intermediate electrode sheet 63. The lower end of the unit 56 is clamped by an insulating block 57 against a pair of metal blocks, one of which is shown at 53, fibre layers 55 being interposed as shown. The metal blocks are insulated from each other and one is connected by contact strips to the outer electrodes 59, 60 whilst the other is connected by a contact strip to the intermediate electrode 63. Plug pins 67 carrying the leading-in cord 68 are received in holes 66 in the metal blocks. A clamp 70 carrying the contact button 77, which projects through an opening 78 in the front wall 51 of the enclosing casing 50, is secured around the unit 56 at a short distance above the clamped lower end thereof whilst a lead weight 84 is fitted over and attached to the upper free end of the unit. The rear of the casing is closed by a two layer cover member 90, 91 having a channel 92 therebetween for receiving one end 93 of a head band 94. Fig. 10 is a circuit diagram showing a transmitting microphone 96 connected to the hearing aid device 56 through an amplifier 98 and battery 99, a variable resistance 100 and a transformer 101. Modifications are described in which the cone of a loud-speaker, the diaphragm of a telephone receiver and the cutter of a phonographic recorder are coupled to a crystal unit similar in construction and arrangement to that shown in Fig. 6, at a short distance from the clamped end thereof. Further constructions of loudspeakers and phonographic recorders employing a crystal unit consisting of a pair of superposed rectangular plates clamped at one corner and adapted to twist under the influence of an electric field are also described, the cone or cutter being coupled to the plates at a point adjacent to the clamped corner. In these constructions weights may be attached to all the free corners of the plates.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US672560A US2045403A (en) | 1933-05-24 | 1933-05-24 | Piezoelectric device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB440330A true GB440330A (en) | 1935-12-23 |
Family
ID=24699074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15458/34A Expired GB440330A (en) | 1933-05-24 | 1934-05-23 | Improvements in piezo-electric devices for converting electrical oscillations into mechanical vibrations |
Country Status (2)
Country | Link |
---|---|
US (1) | US2045403A (en) |
GB (1) | GB440330A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3007013A (en) * | 1959-04-22 | 1961-10-31 | Astatic Corp | Microphone construction |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2514080A (en) * | 1945-01-10 | 1950-07-04 | Bell Telephone Labor Inc | Method of obtaining high velocity with crystals |
US2438708A (en) * | 1945-09-14 | 1948-03-30 | Walter E Kuenstler | Crystal holder |
US2978597A (en) * | 1956-03-14 | 1961-04-04 | Harris Transducer Corp | Circuit element transducer |
US2963911A (en) * | 1959-02-18 | 1960-12-13 | Bell Telephone Labor Inc | Piezoresistive accelerometer |
US3093710A (en) * | 1959-07-06 | 1963-06-11 | Gulton Ind Inc | Piezoelectric electromechanical transducer |
US3376439A (en) * | 1964-08-21 | 1968-04-02 | Vasin Ivan Grigorjevich | Quartz resonator |
US3486047A (en) * | 1967-02-20 | 1969-12-23 | Du Pont | Transducer |
JPS55101821A (en) * | 1979-01-29 | 1980-08-04 | Toyota Motor Corp | Knocking sensor |
US20070086608A1 (en) * | 2005-10-18 | 2007-04-19 | Nec Tokin Corporation | Bone-conduction microphone and method of manufacturing the same |
SE0701242L (en) * | 2007-05-24 | 2008-12-02 | Cochlear Ltd | Vibrator |
US20090248085A1 (en) * | 2008-03-31 | 2009-10-01 | Cochlear Limited | Tissue injection fixation system for a prosthetic device |
USRE48797E1 (en) | 2009-03-25 | 2021-10-26 | Cochlear Limited | Bone conduction device having a multilayer piezoelectric element |
DE102009014770A1 (en) * | 2009-03-25 | 2010-09-30 | Cochlear Ltd., Lane Cove | vibrator |
US9107013B2 (en) | 2011-04-01 | 2015-08-11 | Cochlear Limited | Hearing prosthesis with a piezoelectric actuator |
-
1933
- 1933-05-24 US US672560A patent/US2045403A/en not_active Expired - Lifetime
-
1934
- 1934-05-23 GB GB15458/34A patent/GB440330A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3007013A (en) * | 1959-04-22 | 1961-10-31 | Astatic Corp | Microphone construction |
Also Published As
Publication number | Publication date |
---|---|
US2045403A (en) | 1936-06-23 |
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