NL25055C - - Google Patents
Info
- Publication number
- NL25055C NL25055C NL25055DA NL25055C NL 25055 C NL25055 C NL 25055C NL 25055D A NL25055D A NL 25055DA NL 25055 C NL25055 C NL 25055C
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US211065A US1699786A (en) | 1927-08-06 | 1927-08-06 | Pressure-distributing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL25055C true NL25055C (en:Method) |
Family
ID=22785461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25055D NL25055C (en:Method) | 1927-08-06 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1699786A (en:Method) |
| NL (1) | NL25055C (en:Method) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655316A (en) * | 1985-03-13 | 1987-04-07 | Jbl Incorporated | Acoustic diaphragm |
| US4761817A (en) * | 1986-01-27 | 1988-08-02 | Harman International Industries, Incorporated | Diaphragm structure for a transducer |
| US4881617A (en) * | 1988-12-30 | 1989-11-21 | Alexander Faraone | Radially arcuated speaker cone |
| DE69233156T2 (de) * | 1991-01-17 | 2004-07-08 | Adelman, Roger A. | Verbessertes hörgerät |
| US6026929A (en) * | 1997-11-10 | 2000-02-22 | Single Source Technology And Development, Inc. | High frequency radially arcuated center speaker cone with variable thickness |
| ATE357830T1 (de) * | 2003-08-08 | 2007-04-15 | Koninkl Philips Electronics Nv | Lautsprecher mit gewellter membrane |
-
0
- NL NL25055D patent/NL25055C/xx active
-
1927
- 1927-08-06 US US211065A patent/US1699786A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1699786A (en) | 1929-01-22 |