CA948304A - Acoustical transducers - Google Patents
Acoustical transducersInfo
- Publication number
- CA948304A CA948304A CA089,446A CA89446A CA948304A CA 948304 A CA948304 A CA 948304A CA 89446 A CA89446 A CA 89446A CA 948304 A CA948304 A CA 948304A
- Authority
- CA
- Canada
- Prior art keywords
- acoustical transducers
- acoustical
- transducers
- 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
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R15/00—Magnetostrictive transducers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3805269 | 1969-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA948304A true CA948304A (en) | 1974-05-28 |
Family
ID=10400842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA089,446A Expired CA948304A (en) | 1969-07-29 | 1970-07-29 | Acoustical transducers |
Country Status (5)
Country | Link |
---|---|
US (1) | US3671784A (de) |
CA (1) | CA948304A (de) |
DE (1) | DE2038687A1 (de) |
FR (1) | FR2064799A5 (de) |
GB (1) | GB1314818A (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4195244A (en) * | 1978-07-26 | 1980-03-25 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | CdS Solid state phase insensitive ultrasonic transducer |
US4654546A (en) * | 1984-11-20 | 1987-03-31 | Kari Kirjavainen | Electromechanical film and procedure for manufacturing same |
US5300852A (en) * | 1991-10-04 | 1994-04-05 | Honda Giken Kogyo Kabushiki Kaisha | Piezoelectric ceramic laminate device |
JP3358851B2 (ja) * | 1993-03-11 | 2002-12-24 | 本田技研工業株式会社 | 感湿性アクチュエータ |
DE69421011T2 (de) * | 1993-07-15 | 2000-06-08 | Gen Electric | Breitband Ultraschallwandler und ihr Fabrikationsverfahren |
US7081693B2 (en) * | 2002-03-07 | 2006-07-25 | Microstrain, Inc. | Energy harvesting for wireless sensor operation and data transmission |
US20070042816A1 (en) * | 2005-08-15 | 2007-02-22 | Idt Communication Technology Limited | Handheld communication device with key-lock |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3192420A (en) * | 1961-01-26 | 1965-06-29 | Automation Ind Inc | Electro-mechanical transducers and the fabrication thereof |
US3505657A (en) * | 1965-07-20 | 1970-04-07 | Us Navy | Torsional delay line and impressed flux linkage interaction device |
DE1541523B1 (de) * | 1965-12-21 | 1970-07-09 | Nippon Electric Co | Piezoelektrisches elektroakustisches Wandlerelement und Verfahren zu seiner Herstellung |
FR1482899A (fr) * | 1966-03-17 | 1967-06-02 | Csf | Lignes acoustiques dispersives |
-
1969
- 1969-07-29 GB GB3805269A patent/GB1314818A/en not_active Expired
-
1970
- 1970-07-23 US US57549A patent/US3671784A/en not_active Expired - Lifetime
- 1970-07-28 FR FR7027777A patent/FR2064799A5/fr not_active Expired
- 1970-07-28 DE DE19702038687 patent/DE2038687A1/de active Pending
- 1970-07-29 CA CA089,446A patent/CA948304A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2064799A5 (de) | 1971-07-23 |
GB1314818A (en) | 1973-04-26 |
US3671784A (en) | 1972-06-20 |
DE2038687A1 (de) | 1971-02-04 |
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