NL22991C - - Google Patents
Info
- Publication number
- NL22991C NL22991C NL22991DA NL22991C NL 22991 C NL22991 C NL 22991C NL 22991D A NL22991D A NL 22991DA NL 22991 C NL22991 C NL 22991C
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- 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
- H04R7/04—Plane diaphragms
-
- 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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
-
- 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
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
-
- 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
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Adornments (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0078780 | 1927-03-12 | ||
| DES79599D DE484371C (de) | 1927-03-12 | 1927-05-07 | Membran nach Patent 482132 mit zum Zwecke des elektrodynamischen Antriebes im Mittelteil angebrachtem Stromleiter |
| DES79598D DE518111C (de) | 1927-03-12 | 1927-05-07 | Anordnung zur Befestigung von Stromleitern an Membranen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL22991C true NL22991C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=27437544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL22991D NL22991C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1927-03-12 |
Country Status (4)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3636278A (en) * | 1969-02-19 | 1972-01-18 | Heil Scient Lab Inc | Acoustic transducer with a diaphragm forming a plurality of adjacent narrow air spaces open only at one side with the open sides of adjacent air spaces alternatingly facing in opposite directions |
| DE102007020847B4 (de) * | 2007-05-02 | 2009-11-26 | Mundorf Eb Gmbh | Membran-Anordnung für einen elektrodynamischen Schallwandler und Lautsprecher mit einer derartigen Membran-Anordnung |
| CN119895893A (zh) * | 2022-08-18 | 2025-04-25 | I·V·萨菲乌林 | 电动驱动器 |
-
0
- NL NL22991D patent/NL22991C/xx active
-
1927
- 1927-05-07 DE DES79599D patent/DE484371C/de not_active Expired
- 1927-05-07 DE DES79598D patent/DE518111C/de not_active Expired
-
1928
- 1928-03-12 FR FR650754D patent/FR650754A/fr not_active Expired
- 1928-03-12 GB GB760628A patent/GB287065A/en not_active Expired
- 1928-05-02 GB GB1293328A patent/GB289887A/en not_active Expired
- 1928-05-02 GB GB1294328A patent/GB289888A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB287065A (en) | 1929-01-31 |
| DE484371C (de) | 1929-10-14 |
| GB289888A (en) | 1929-05-09 |
| FR650754A (fr) | 1929-02-11 |
| GB289887A (en) | 1929-08-02 |
| DE518111C (de) | 1931-02-11 |