BE350724A - - Google Patents
Info
- Publication number
- BE350724A BE350724A BE350724DA BE350724A BE 350724 A BE350724 A BE 350724A BE 350724D A BE350724D A BE 350724DA BE 350724 A BE350724 A BE 350724A
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1086027A GB294285A (en) | 1928-01-07 | 1927-04-22 | Improvements in or relating to electro-acoustic devices |
| GB60228A GB309226A (en) | 1928-01-07 | 1928-01-07 | Improvements in or relating to acoustic devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE350724A true BE350724A (en) |
Family
ID=26236054
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE350724D BE350724A (en) | 1927-04-22 | ||
| BE357157D BE357157A (en) | 1927-04-22 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE357157D BE357157A (en) | 1927-04-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US2002189A (en) |
| BE (2) | BE357157A (en) |
| FR (2) | FR653092A (en) |
| NL (1) | NL28724C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2469773A (en) * | 1934-06-04 | 1949-05-10 | Jensen Mfg Company | Loud-speaker diaphragm support member |
| US2513171A (en) * | 1948-11-26 | 1950-06-27 | Fauthal A Hassan | Loud-speaker diaphragm with stiffening struts |
| GB698695A (en) * | 1951-01-11 | 1953-10-21 | Lustraphone Ltd | Improvements in or relating to microphones |
| US4239943A (en) * | 1977-11-17 | 1980-12-16 | Cerwin Vega, Inc. | Adjustable dual spider for a loudspeaker |
| US4373607A (en) * | 1979-08-03 | 1983-02-15 | Miller Charles D | Loudspeaker cone stiffeners |
| US5123053A (en) * | 1990-07-11 | 1992-06-16 | Harman International Industries, Incorporated | Loudspeaker suspension |
| US6611604B1 (en) * | 1999-10-22 | 2003-08-26 | Stillwater Designs & Audio, Inc. | Ultra low frequency transducer and loud speaker comprising same |
-
0
- BE BE350724D patent/BE350724A/xx unknown
- BE BE357157D patent/BE357157A/xx unknown
-
1928
- 1928-04-17 US US270683A patent/US2002189A/en not_active Expired - Lifetime
- 1928-04-19 FR FR653092D patent/FR653092A/en not_active Expired
- 1928-12-31 US US329467A patent/US2002190A/en not_active Expired - Lifetime
-
1929
- 1929-01-04 FR FR666922D patent/FR666922A/en not_active Expired
-
1945
- 1945-10-08 NL NL28724D patent/NL28724C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US2002190A (en) | 1935-05-21 |
| BE357157A (en) | |
| US2002189A (en) | 1935-05-21 |
| FR666922A (en) | 1929-10-08 |
| FR653092A (en) | 1929-03-15 |
| NL28724C (en) |