BE637492A - - Google Patents
Info
- Publication number
- BE637492A BE637492A BE637492DA BE637492A BE 637492 A BE637492 A BE 637492A BE 637492D A BE637492D A BE 637492DA BE 637492 A BE637492 A BE 637492A
- Authority
- BE
- Belgium
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
-
- 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
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4505262A GB1006726A (en) | 1962-11-28 | 1962-11-28 | Improvements in or relating to piezo-electric transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE637492A true BE637492A (en:Method) |
Family
ID=10435706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE637492D BE637492A (en:Method) | 1962-11-28 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE637492A (en:Method) |
| CH (1) | CH396994A (en:Method) |
| DE (1) | DE1259389B (en:Method) |
| DK (1) | DK109394C (en:Method) |
| GB (1) | GB1006726A (en:Method) |
| NL (1) | NL298219A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234218A (en:Method) * | 1968-07-29 | 1971-06-03 | ||
| US9763014B2 (en) * | 2014-02-21 | 2017-09-12 | Harman International Industries, Incorporated | Loudspeaker with piezoelectric elements |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2416887A (en) * | 1944-10-20 | 1947-03-04 | Tibbetts Lab Inc | Piezoelectric device |
| US2552878A (en) * | 1947-09-24 | 1951-05-15 | Electro Voice | Second order differential microphone |
| DE939598C (de) * | 1951-01-13 | 1956-02-23 | Atlas Werke Ag | Vorrichtung zum Senden oder Empfangen von Schallwellen |
| GB727905A (en) * | 1951-05-24 | 1955-04-13 | Traugott Link | An improved key mounting for accordions |
| DE1815439U (de) * | 1960-04-14 | 1960-07-28 | Steeg & Reuter G M B H Dr | Kleinstmikrofon mit keramischem wandler. |
| NL6815845A (en:Method) * | 1967-11-08 | 1969-05-12 |
-
0
- NL NL298219D patent/NL298219A/xx unknown
- BE BE637492D patent/BE637492A/xx unknown
-
1962
- 1962-11-28 GB GB4505262A patent/GB1006726A/en not_active Expired
-
1963
- 1963-09-03 DE DE1963B0073369 patent/DE1259389B/de active Pending
- 1963-09-20 CH CH1162263A patent/CH396994A/fr unknown
- 1963-10-05 DK DK469363A patent/DK109394C/da active
Also Published As
| Publication number | Publication date |
|---|---|
| DK109394C (da) | 1968-04-22 |
| NL298219A (en:Method) | |
| CH396994A (fr) | 1965-08-15 |
| GB1006726A (en) | 1965-10-06 |
| DE1259389B (de) | 1968-01-25 |