CA1139233A - Moving coil type stereophonic pickup cartridge - Google Patents
Moving coil type stereophonic pickup cartridgeInfo
- Publication number
- CA1139233A CA1139233A CA000344937A CA344937A CA1139233A CA 1139233 A CA1139233 A CA 1139233A CA 000344937 A CA000344937 A CA 000344937A CA 344937 A CA344937 A CA 344937A CA 1139233 A CA1139233 A CA 1139233A
- Authority
- CA
- Canada
- Prior art keywords
- armature
- leg
- magnetic
- cartridge
- cantilever
- 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
- 230000005291 magnetic effect Effects 0.000 claims abstract description 113
- 230000033001 locomotion Effects 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 16
- 241001422033 Thestylus Species 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000009931 harmful effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- -1 Samarium-Cobalt Chemical class 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R9/16—Gramophone pick-ups using a stylus; Recorders using a stylus signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electrophonic Musical Instruments (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7896179A JPS562796A (en) | 1979-06-22 | 1979-06-22 | Moving coil type stereo pickup cartridge |
| JPSHO54-78961 | 1979-06-22 | ||
| JPSHO54-130249 | 1979-10-09 | ||
| JP13024979A JPS5654197A (en) | 1979-10-09 | 1979-10-09 | Stereo pickup cartridge of moving coil type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1139233A true CA1139233A (en) | 1983-01-11 |
Family
ID=26420003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000344937A Expired CA1139233A (en) | 1979-06-22 | 1980-02-01 | Moving coil type stereophonic pickup cartridge |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4376304A (show.php) |
| CA (1) | CA1139233A (show.php) |
| CH (1) | CH651146A5 (show.php) |
| DE (1) | DE3006283C2 (show.php) |
| DK (1) | DK152476C (show.php) |
| FR (1) | FR2460084A1 (show.php) |
| GB (1) | GB2055272B (show.php) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174395U (ja) * | 1984-04-27 | 1985-11-19 | 並木精密宝石株式会社 | ピツクアツプ・カ−トリツジ |
| US5016703A (en) * | 1988-11-10 | 1991-05-21 | Lanxide Technology Company, Lp | Method of forming a metal matrix composite body by a spontaneous infiltration technique |
| US8050144B2 (en) * | 2009-07-08 | 2011-11-01 | Geospace Technologies Lp | Vertical geophone having improved distortion characteristics |
| US8098546B2 (en) * | 2009-07-08 | 2012-01-17 | Geospace Technologies, Lp | Geophone having improved sensitivity |
| US8208347B2 (en) * | 2009-07-08 | 2012-06-26 | Geospace Technologies, Lp | Geophone having improved damping control |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB930366A (en) * | 1958-11-10 | 1963-07-03 | Bang & Olufsen Produktionssels | Stereophonic pick-up having a single stylus |
| US3214525A (en) * | 1959-10-22 | 1965-10-26 | Gulton Ind Inc | Stereophonic piezoelectric bender-type transducer |
| DK110237C (da) * | 1960-10-22 | 1973-01-22 | Fonofilm Ind As | Stereofonisk elektrodynamisk lydaftager. |
| US3761647A (en) * | 1968-08-14 | 1973-09-25 | Audio Technica Kk | Cartridge for detecting vibrations representing stereophonic sound |
| DE2020903A1 (de) * | 1970-04-29 | 1971-11-11 | Wilms Hermann | Elektrodynamischer Tonabnehmer oder Schneiddose |
| GB1332486A (en) * | 1970-12-23 | 1973-10-03 | Micro Seiki Co Ltd | Moving coil type phonograph pickup cartridge |
| JPS5169601A (ja) * | 1974-12-13 | 1976-06-16 | Nippon Columbia | Pitsukuatsupukaatoritsuji |
| US4161631A (en) * | 1974-12-13 | 1979-07-17 | Nippon Columbia Kabushikikaisha | Pickup cartridge |
| US4037060A (en) * | 1975-07-09 | 1977-07-19 | Nippon Atsudenki Kabushiki Kaisha T/A Japan Piezo Co., Ltd. | Stereophonic pickup cartridge |
| JPS5377601A (en) * | 1976-12-21 | 1978-07-10 | Audio Technica Kk | Transducer |
| JPS5448503A (en) * | 1977-09-01 | 1979-04-17 | Matsushita Electric Ind Co Ltd | Moving coil type pickup cartridge |
| US4209670A (en) * | 1977-10-24 | 1980-06-24 | Victor Company Of Japan, Limited | Moving-coil type pickup cartridge |
| GB2043395B (en) * | 1979-01-31 | 1983-01-06 | Pioneer Electronic Corp | Moving coil phono cartridge |
-
1980
- 1980-02-01 CA CA000344937A patent/CA1139233A/en not_active Expired
- 1980-02-20 DE DE3006283A patent/DE3006283C2/de not_active Expired
- 1980-05-30 DK DK235880A patent/DK152476C/da active
- 1980-06-10 GB GB8019002A patent/GB2055272B/en not_active Expired
- 1980-06-20 FR FR8013721A patent/FR2460084A1/fr active Granted
- 1980-06-20 CH CH4745/80A patent/CH651146A5/de not_active IP Right Cessation
-
1981
- 1981-06-26 US US06/277,882 patent/US4376304A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2055272B (en) | 1983-03-23 |
| DE3006283C2 (de) | 1984-12-13 |
| FR2460084B1 (show.php) | 1985-04-19 |
| DK152476C (da) | 1988-08-08 |
| DK152476B (da) | 1988-02-29 |
| GB2055272A (en) | 1981-02-25 |
| CH651146A5 (de) | 1985-08-30 |
| FR2460084A1 (fr) | 1981-01-16 |
| US4376304A (en) | 1983-03-08 |
| DE3006283A1 (de) | 1981-01-08 |
| DK235880A (da) | 1980-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |