NL238368A - - Google Patents
Info
- Publication number
- NL238368A NL238368A NL238368DA NL238368A NL 238368 A NL238368 A NL 238368A NL 238368D A NL238368D A NL 238368DA NL 238368 A NL238368 A NL 238368A
- Authority
- NL
- Netherlands
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
- H04R11/00—Transducers of moving-armature or moving-core type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Manufacture Of Motors, Generators (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73008258A | 1958-04-22 | 1958-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL238368A true NL238368A (xx) |
Family
ID=24933833
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL238368D NL238368A (xx) | 1958-04-22 | ||
| NL123996D NL123996C (xx) | 1958-04-22 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL123996D NL123996C (xx) | 1958-04-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3521208A (xx) |
| DE (1) | DE1173184B (xx) |
| GB (1) | GB905576A (xx) |
| NL (2) | NL123996C (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7376237B2 (en) * | 2004-09-02 | 2008-05-20 | Oticon A/S | Vibrator for bone-conduction hearing |
| US7577269B2 (en) * | 2006-08-28 | 2009-08-18 | Technology Properties Limited | Acoustic transducer |
| EP1962550A3 (en) * | 2007-02-20 | 2009-03-04 | Sonion Nederland B.V. | A moving armature receiver with reduced parasitic coupling |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2245511A (en) * | 1937-12-04 | 1941-06-10 | Us Instr Corp | Telephone instrument |
| CH218774A (de) * | 1939-09-05 | 1941-12-31 | Fides Gmbh | Magnetisches Mikrofon. |
| BE443898A (xx) * | 1940-12-02 | |||
| DE890992C (de) * | 1940-12-23 | 1953-09-24 | Siemens Ag | Elektromagnet |
| DE734040C (de) * | 1941-09-24 | 1943-04-07 | Siemens Ag | Polarisiertes Relais |
| CH311081A (de) * | 1942-04-07 | 1955-11-15 | Siemens Ag | Einrichtung mit steuerbarem Magnetkreis. |
| US2443784A (en) * | 1943-05-17 | 1948-06-22 | Barber Coleman Company | Relay |
| FR963909A (xx) * | 1947-06-06 | 1950-07-26 | ||
| US2912522A (en) * | 1954-06-14 | 1959-11-10 | Industrial Res Prod Inc | Electro-mechanical transducing device |
| US2912523A (en) * | 1955-10-26 | 1959-11-10 | Industrial Res Prod Inc | Electro-acoustic transducer |
-
0
- NL NL238368D patent/NL238368A/xx unknown
- NL NL123996D patent/NL123996C/xx active
-
1958
- 1958-04-22 US US730082A patent/US3521208A/en not_active Expired - Lifetime
-
1959
- 1959-04-20 GB GB13401/59A patent/GB905576A/en not_active Expired
- 1959-04-21 DE DEK37528A patent/DE1173184B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1173184B (de) | 1964-07-02 |
| US3521208A (en) | 1970-07-21 |
| GB905576A (en) | 1962-09-12 |
| NL123996C (xx) |