FR1550699A - - Google Patents
Info
- Publication number
- FR1550699A FR1550699A FR1550699DA FR1550699A FR 1550699 A FR1550699 A FR 1550699A FR 1550699D A FR1550699D A FR 1550699DA FR 1550699 A FR1550699 A FR 1550699A
- Authority
- FR
- France
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
- H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6700283A NL6700283A (fr) | 1967-01-07 | 1967-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1550699A true FR1550699A (fr) | 1968-12-20 |
Family
ID=19798928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1550699D Expired FR1550699A (fr) | 1967-01-07 | 1968-01-05 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3549830A (fr) |
| DE (1) | DE1614302A1 (fr) |
| FR (1) | FR1550699A (fr) |
| GB (1) | GB1159081A (fr) |
| NL (1) | NL6700283A (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783311A (en) * | 1970-12-19 | 1974-01-01 | Coral Audio Corp | Magnetic device for use in acoustic apparatus |
| US3949249A (en) * | 1974-08-02 | 1976-04-06 | L. Z. Reece, Et Al | Electro-magnetic reciprocating motor |
| US4187444A (en) * | 1978-01-19 | 1980-02-05 | Varian Associates, Inc. | Open-circuit magnet structure for cross-field tubes and the like |
| US4398972A (en) * | 1981-05-11 | 1983-08-16 | Bell Telephone Laboratories, Incorporated | Ferritic Fe-Ni magnetic alloys |
| JPS59139794A (ja) * | 1983-01-31 | 1984-08-10 | Ibuki Kogyo Kk | 漏洩磁場を打消したホ−ンスピ−カ− |
| NO169210C (no) * | 1989-07-06 | 1992-05-20 | Nha As | Elektrodynamisk lydgiver for hoereapparat. |
| GB0223654D0 (en) * | 2002-10-10 | 2002-11-20 | New Transducers Ltd | Electromagnetic actuator |
-
1967
- 1967-01-07 NL NL6700283A patent/NL6700283A/xx unknown
- 1967-11-29 DE DE19671614302 patent/DE1614302A1/de active Pending
-
1968
- 1968-01-04 GB GB677/68A patent/GB1159081A/en not_active Expired
- 1968-01-05 US US696052A patent/US3549830A/en not_active Expired - Lifetime
- 1968-01-05 FR FR1550699D patent/FR1550699A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1159081A (en) | 1969-07-23 |
| NL6700283A (fr) | 1968-07-08 |
| US3549830A (en) | 1970-12-22 |
| DE1614302A1 (de) | 1970-08-13 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |