GB1384968A - Electromechanical transducers - Google Patents
Electromechanical transducersInfo
- Publication number
- GB1384968A GB1384968A GB2991973A GB2991973A GB1384968A GB 1384968 A GB1384968 A GB 1384968A GB 2991973 A GB2991973 A GB 2991973A GB 2991973 A GB2991973 A GB 2991973A GB 1384968 A GB1384968 A GB 1384968A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pick
- electromechanical transducers
- assembly
- fonofilm
- industri
- 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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Knitting Machines (AREA)
Abstract
1384968 Pick-ups FONOFILM INDUSTRI AS 22 June 1973 [18 Aug 1972] 29919/73 Addition to 1293636 Heading H4J A pick-up or other electromechanical transducer, such as described in Specification 1,293,636, of the variable reluctance type, has a replaceable assembly (e.g. a stylus assembly), having permanent magnet portions and an armature which co-operate with a magnetically conductive yoke and one or more coils on the main body of the device.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US281810A US3878342A (en) | 1972-08-18 | 1972-08-18 | Replaceable stylus for stereophonic phonograph pickup |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1384968A true GB1384968A (en) | 1975-02-26 |
Family
ID=23078883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2991973A Expired GB1384968A (en) | 1972-08-18 | 1973-06-22 | Electromechanical transducers |
Country Status (6)
Country | Link |
---|---|
US (1) | US3878342A (en) |
JP (2) | JPS4960504A (en) |
CH (1) | CH546528A (en) |
DE (2) | DE2257284A1 (en) |
GB (1) | GB1384968A (en) |
HK (1) | HK74676A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5832398Y2 (en) * | 1976-04-30 | 1983-07-18 | パイオニア株式会社 | Electromagnetic cartridge |
JPS538102A (en) * | 1976-07-12 | 1978-01-25 | Torio Kk | Pickup cartridge |
US4272652A (en) * | 1978-05-25 | 1981-06-09 | Nippon Atsudenki K.K. | Moving coil type stereophonic pickup cartridge |
FR2502882A1 (en) * | 1981-03-26 | 1982-10-01 | Mimran Guy | Record disc reproduction stylus - has needle point in longitudinal axis of stylus supported at centre by suspension in annular magnet |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3294405A (en) * | 1963-12-11 | 1966-12-27 | Audio Dynamics Corp | Phonograph pick-up |
US3538266A (en) * | 1967-10-06 | 1970-11-03 | Micro Seiki Co Ltd | Magnetic pickup with inducing magnet axially aligned with the armature |
DK124049B (en) * | 1969-03-25 | 1972-09-04 | Fonofilm Ind As | Magnetic pick-up. |
US3694586A (en) * | 1969-11-03 | 1972-09-26 | Joseph F Grado | Toroidal armature stereophonic pickup |
JPS4937527B1 (en) * | 1971-02-23 | 1974-10-09 |
-
1972
- 1972-08-18 US US281810A patent/US3878342A/en not_active Expired - Lifetime
- 1972-11-22 DE DE2257284A patent/DE2257284A1/en active Pending
- 1972-11-22 DE DE19727242940U patent/DE7242940U/en not_active Expired
- 1972-12-05 CH CH1767572A patent/CH546528A/en not_active IP Right Cessation
-
1973
- 1973-06-22 GB GB2991973A patent/GB1384968A/en not_active Expired
- 1973-08-17 JP JP48091818A patent/JPS4960504A/ja active Pending
-
1976
- 1976-12-02 HK HK746/76*UA patent/HK74676A/en unknown
-
1980
- 1980-08-18 JP JP11331180A patent/JPS5635595A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US3878342A (en) | 1975-04-15 |
HK74676A (en) | 1976-12-10 |
DE2257284A1 (en) | 1974-03-07 |
JPS4960504A (en) | 1974-06-12 |
DE7242940U (en) | 1973-04-05 |
CH546528A (en) | 1974-02-28 |
JPS5635595A (en) | 1981-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |