BE489589A - - Google Patents
Info
- Publication number
- BE489589A BE489589A BE489589DA BE489589A BE 489589 A BE489589 A BE 489589A BE 489589D A BE489589D A BE 489589DA BE 489589 A BE489589 A BE 489589A
- 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
-
- 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
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Rehabilitation Tools (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US32587A US2515446A (en) | 1948-06-12 | 1948-06-12 | Electromechanical transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE489589A true BE489589A (US06653308-20031125-C00197.png) |
Family
ID=21865718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE489589D BE489589A (US06653308-20031125-C00197.png) | 1948-06-12 |
Country Status (6)
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2944118A (en) * | 1960-07-05 | Binaural phonograph pickup | ||
| US2719929A (en) * | 1955-10-04 | brown | ||
| US2640889A (en) * | 1949-05-17 | 1953-06-02 | Zenith Radio Corp | Piezoelectric transducer |
| US2756353A (en) * | 1950-04-10 | 1956-07-24 | Gen Electric | Bender-mode piezoelectric device and method of making the same |
| US2760181A (en) * | 1951-10-08 | 1956-08-21 | Bendix Aviat Corp | Transducer having adjustable electrical impedance |
| US2928068A (en) * | 1952-03-25 | 1960-03-08 | Gen Electric | Compressional wave transducer and method of making the same |
| DE936868C (de) * | 1952-06-19 | 1955-12-22 | Siemens Ag | Verfahren zur Erzeugung von Aerosolen |
| DE1000608B (de) * | 1952-11-17 | 1957-01-10 | Electroacustic Gmbh | Tonabnehmer mit als Bieger wirkenden elektroakustischen Wandlern |
| DE1101032B (de) * | 1954-04-27 | 1961-03-02 | Dr Hans Karl Hach | Elektrostriktiver Wandler aus keramischem Material und Verfahren zu seiner Herstellung |
| US3168623A (en) * | 1954-10-13 | 1965-02-02 | Gulton Ind Inc | Piezoelectric transducer |
| US2928069A (en) * | 1954-10-13 | 1960-03-08 | Gulton Ind Inc | Transducer |
| US2944117A (en) * | 1955-06-20 | 1960-07-05 | Erie Resistor Corp | Bender type piezoelectric transducer |
| US3115588A (en) * | 1958-02-05 | 1963-12-24 | Raytheon Co | Electroacoustical apparatus |
| NL235912A (US06653308-20031125-C00197.png) * | 1958-02-10 | |||
| NL236717A (US06653308-20031125-C00197.png) * | 1958-03-03 | |||
| US3374367A (en) * | 1966-01-21 | 1968-03-19 | John V. Cowan | Electroacoustic transducers |
| US3543059A (en) * | 1968-10-28 | 1970-11-24 | Us Navy | Fluted cylinder for underwater transducer |
| US4834610A (en) * | 1986-04-25 | 1989-05-30 | Bond Iii Frederick W | Wind processing air turbine, and methods of constructing and utilizing same |
| US4782910A (en) * | 1986-05-23 | 1988-11-08 | Mobil Oil Corporation | Bi-polar bender transducer for logging tools |
| DE3622557A1 (de) * | 1986-07-04 | 1988-02-18 | Leitz Ernst Gmbh | Piezoelektrische feinpositioniervorrichtung |
| CA2066084A1 (en) * | 1991-05-31 | 1992-12-01 | Gordon Walter Culp | Twisting actuators |
| JP2007158276A (ja) * | 2005-12-08 | 2007-06-21 | Ngk Insulators Ltd | 圧電／電歪デバイス及び圧電／電歪デバイスの駆動方法 |
| US20230358654A1 (en) * | 2022-05-09 | 2023-11-09 | David Solomon | Methods Circuits Devices Assemblies Systems and Functionally Associated Machine Executable Code for Detecting Structural Cracking or Breaking a Functional Element |
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0
- BE BE489589D patent/BE489589A/xx unknown
-
1948
- 1948-06-12 US US32587A patent/US2515446A/en not_active Expired - Lifetime
-
1949
- 1949-06-03 GB GB14948/49A patent/GB659869A/en not_active Expired
- 1949-06-12 DE DEP45579A patent/DE809491C/de not_active Expired
- 1949-06-13 CH CH279345D patent/CH279345A/de unknown
- 1949-06-13 FR FR988236D patent/FR988236A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE809491C (de) | 1951-07-30 |
| US2515446A (en) | 1950-07-18 |
| CH279345A (de) | 1951-11-30 |
| FR988236A (fr) | 1951-08-24 |
| GB659869A (en) | 1951-10-31 |
