GB969288A - Transducer - Google Patents
TransducerInfo
- Publication number
- GB969288A GB969288A GB34255/62A GB3425562A GB969288A GB 969288 A GB969288 A GB 969288A GB 34255/62 A GB34255/62 A GB 34255/62A GB 3425562 A GB3425562 A GB 3425562A GB 969288 A GB969288 A GB 969288A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- magnets
- sept
- transducer
- air gap
- 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
- 230000004907 flux Effects 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000005219 brazing Methods 0.000 abstract 1
- 238000005476 soldering Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- 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
-
- 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
- H04R11/04—Microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
969,288. Audio transducers. INDUSTRIAL RESEARCH PRODUCTS Inc. Sept. 6, 1962 [Sept. 6, 1961], No. 34255/62. Heading H4J. A transducer comprises an armature 48 with one end secured to a flux conductive envelope 28 which connects opposite poles of two permanent magnets 56, 58 and the other end extending through an air gap between adjacent pole faces of the magnets. The position of the armature in the air gap may be adjusted by bending flanges 34, 36 of the casing between which the arm of the T-shaped armature is clamped as by brazing, welding or soldering. Polepieces 80, 82 serve to direct part of the flux, traversing the armature in its non-stable positions, through the space surrounding the magnets to the walls of the envelope. When the transducer is used as a microphone or receiver the free end of the armature is secured to a diaphragm 68 to which is attached a rigid plate 66 incorporating a Thuras tube 79 (and 77, Fig. 2, not shown) such as the one described in Specification 869,234. Ports 24 or 71 may be used for providing access from chamber 72 to the outer air. In a further embodiment (Fig. 8, not shown), a T-shaped diaphragm is formed integrally with the armature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US136220A US3413424A (en) | 1961-09-06 | 1961-09-06 | Electro-acoustic transducer |
| US393619A US3249702A (en) | 1961-09-06 | 1964-09-01 | Transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB969288A true GB969288A (en) | 1964-09-09 |
Family
ID=26834132
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34255/62A Expired GB969288A (en) | 1961-09-06 | 1962-09-06 | Transducer |
| GB10937/64A Expired GB984414A (en) | 1961-09-06 | 1962-09-06 | Transducer |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10937/64A Expired GB984414A (en) | 1961-09-06 | 1962-09-06 | Transducer |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US3413424A (en) |
| CH (2) | CH414749A (en) |
| DE (2) | DE1180415B (en) |
| DK (1) | DK114280B (en) |
| GB (2) | GB969288A (en) |
| NL (1) | NL282929A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3432622A (en) * | 1965-05-10 | 1969-03-11 | Dyna Magnetic Devices Inc | Sub-miniature sound transducers |
| US3935398A (en) * | 1971-07-12 | 1976-01-27 | Industrial Research Products, Inc. | Transducer with improved armature and yoke construction |
| GB8928899D0 (en) * | 1989-12-21 | 1990-02-28 | Knowles Electronics Co | Coil assemblies |
| US5299176A (en) * | 1991-12-20 | 1994-03-29 | Tibbetts Industries, Inc. | Balanced armature transducers with transverse gap |
| NL1004669C2 (en) * | 1996-12-02 | 1998-06-03 | Microtronic Nederland Bv | Transducer. |
| US6658134B1 (en) | 1999-08-16 | 2003-12-02 | Sonionmicrotronic Nederland B.V. | Shock improvement for an electroacoustic transducer |
| US7065224B2 (en) | 2001-09-28 | 2006-06-20 | Sonionmicrotronic Nederland B.V. | Microphone for a hearing aid or listening device with improved internal damping and foreign material protection |
| US7072482B2 (en) | 2002-09-06 | 2006-07-04 | Sonion Nederland B.V. | Microphone with improved sound inlet port |
| US8135163B2 (en) * | 2007-08-30 | 2012-03-13 | Klipsch Group, Inc. | Balanced armature with acoustic low pass filter |
| US9872109B2 (en) | 2014-12-17 | 2018-01-16 | Knowles Electronics, Llc | Shared coil receiver |
| WO2019014510A2 (en) | 2017-07-14 | 2019-01-17 | Knowles Electronics, Llc | Acoustic receiver and method of making same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2163161A (en) * | 1937-05-20 | 1939-06-20 | Control Instr Co Inc | Magnetic unit |
| DE910906C (en) * | 1942-03-26 | 1954-05-06 | Siemens Ag | Concentric magnet system for telephones or magnetic microphones |
| FR963909A (en) * | 1947-06-06 | 1950-07-26 | ||
| GB643518A (en) * | 1947-08-19 | 1950-09-20 | Wheeler Insulated Wire Company | Improvements in or relating to transducers |
| NL81703C (en) * | 1951-04-23 | |||
| NL90444C (en) * | 1954-07-21 | |||
| FR1113468A (en) * | 1954-11-03 | 1956-03-29 | Electronique & Automatisme Sa | Electromagnetic device |
| NL111663C (en) * | 1956-10-11 | |||
| US2994016A (en) * | 1957-08-28 | 1961-07-25 | Tibbetts Industries | Magnetic translating device |
| US2927976A (en) * | 1958-11-17 | 1960-03-08 | Sonotone Corp | Acoustic signal transducers |
| US2927977A (en) * | 1958-11-17 | 1960-03-08 | Sonotone Corp | Acoustic signal transducers |
| US3076062A (en) * | 1959-10-30 | 1963-01-29 | Dyna Magnetic Devices Inc | Hearing-aid sound transducer |
-
0
- NL NL282929D patent/NL282929A/xx unknown
-
1961
- 1961-09-06 US US136220A patent/US3413424A/en not_active Expired - Lifetime
-
1962
- 1962-09-03 DE DEJ22339A patent/DE1180415B/en active Pending
- 1962-09-03 DE DEJ25926A patent/DE1240937B/en active Pending
- 1962-09-05 DK DK388262AA patent/DK114280B/en unknown
- 1962-09-06 CH CH1561164A patent/CH414749A/en unknown
- 1962-09-06 GB GB34255/62A patent/GB969288A/en not_active Expired
- 1962-09-06 GB GB10937/64A patent/GB984414A/en not_active Expired
- 1962-09-06 CH CH1058462A patent/CH405430A/en unknown
-
1964
- 1964-09-01 US US393619A patent/US3249702A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB984414A (en) | 1965-02-24 |
| US3249702A (en) | 1966-05-03 |
| US3413424A (en) | 1968-11-26 |
| DK114280B (en) | 1969-06-16 |
| DE1180415B (en) | 1964-10-29 |
| NL282929A (en) | |
| DE1240937B (en) | 1967-05-24 |
| CH405430A (en) | 1966-01-15 |
| CH414749A (en) | 1966-06-15 |
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