FR36830E - Perfectionnements aux hauts-parleurs - Google Patents
Perfectionnements aux hauts-parleursInfo
- Publication number
- FR36830E FR36830E FR36830DA FR36830E FR 36830 E FR36830 E FR 36830E FR 36830D A FR36830D A FR 36830DA FR 36830 E FR36830 E FR 36830E
- Authority
- FR
- France
- Prior art keywords
- enhancements
- loudspeaker
- loudspeaker enhancements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
-
- 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
-
- 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
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mining & Mineral Resources (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US152475A US1824724A (en) | 1926-12-03 | 1926-12-03 | Electromagnetic device |
US154814A US1713210A (en) | 1926-12-14 | 1926-12-14 | Cone-type loud-speaker |
US164620A US1689513A (en) | 1927-01-29 | 1927-01-29 | Sound-reproducing device |
US194181A US1833758A (en) | 1927-05-25 | 1927-05-25 | Device for producing sound |
US206408A US1694319A (en) | 1927-07-18 | 1927-07-18 | Apparatus for producing sound |
US23977527A | 1927-12-13 | 1927-12-13 | |
US241967A US1688804A (en) | 1927-12-22 | 1927-12-22 | Sound-producing apparatus |
US269519A US1754044A (en) | 1928-04-12 | 1928-04-12 | Sound-producing device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR36830E true FR36830E (fr) | 1930-09-20 |
Family
ID=27576273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR36830D Expired FR36830E (fr) | 1926-12-03 | 1929-04-12 | Perfectionnements aux hauts-parleurs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR36830E (fr) |
-
1929
- 1929-04-12 FR FR36830D patent/FR36830E/fr not_active Expired
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