GB1318665A - Electromagnetic pickup cartridge - Google Patents

Electromagnetic pickup cartridge

Info

Publication number
GB1318665A
GB1318665A GB2816071A GB2816071A GB1318665A GB 1318665 A GB1318665 A GB 1318665A GB 2816071 A GB2816071 A GB 2816071A GB 2816071 A GB2816071 A GB 2816071A GB 1318665 A GB1318665 A GB 1318665A
Authority
GB
United Kingdom
Prior art keywords
armature
air gaps
pole pieces
pole
sensibly
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
Application number
GB2816071A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grado J F
Original Assignee
Grado J F
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Grado J F filed Critical Grado J F
Publication of GB1318665A publication Critical patent/GB1318665A/en
Expired legal-status Critical Current

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)
  • Electromagnets (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Moving Of Heads (AREA)
GB2816071A 1970-06-29 1971-06-16 Electromagnetic pickup cartridge Expired GB1318665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5062470A 1970-06-29 1970-06-29

Publications (1)

Publication Number Publication Date
GB1318665A true GB1318665A (en) 1973-05-31

Family

ID=21966368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2816071A Expired GB1318665A (en) 1970-06-29 1971-06-16 Electromagnetic pickup cartridge

Country Status (9)

Country Link
US (1) US3683128A (ja)
JP (1) JPS5021241B1 (ja)
CA (1) CA930674A (ja)
CH (1) CH541269A (ja)
DE (1) DE2132127C3 (ja)
ES (1) ES392652A1 (ja)
FR (1) FR2096572B1 (ja)
GB (1) GB1318665A (ja)
NL (1) NL161647C (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174111A (en) * 1973-11-12 1979-11-13 Grado Joseph F Compressive pivot suspension system for an electromagnetic cartridge
US3881073A (en) * 1973-11-12 1975-04-29 Joseph F Grado Replaceable stylus-lever generator module for an electromagnetic cartridge
US4031336A (en) * 1975-02-10 1977-06-21 Grado Joseph F Electromagnetic pickup with magnetic gap displacement generator
AT341240B (de) * 1975-07-29 1978-01-25 Akg Akustische Kino Geraete Tonabnehmer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114471A (en) * 1936-06-20 1938-04-19 Bell Telephone Labor Inc Sound recording and reproducing system
US2456338A (en) * 1945-03-26 1948-12-14 Pure Oil Co Catalytic polymerization of olefinic hydrocarbons
US2444336A (en) * 1946-01-30 1948-06-29 Lionel B Cornwell Electrical sound translating device
US3469040A (en) * 1965-04-15 1969-09-23 Empire Scient Corp Variable reluctance phonograph cartridge
FR1541427A (fr) * 1966-10-20 1968-10-04 Matsushita Electric Ind Co Ltd Pick-up magnétique de phonographe stéréophonique
DK124049B (da) * 1969-03-25 1972-09-04 Fonofilm Ind As Magnetisk pick-up.
US3694586A (en) * 1969-11-03 1972-09-26 Joseph F Grado Toroidal armature stereophonic pickup

Also Published As

Publication number Publication date
JPS5021241B1 (ja) 1975-07-22
NL161647B (nl) 1979-09-17
CH541269A (de) 1973-08-31
DE2132127C3 (de) 1974-12-12
ES392652A1 (es) 1973-08-01
DE2132127B2 (ja) 1974-05-16
NL7108816A (ja) 1971-12-31
NL161647C (nl) 1980-02-15
CA930674A (en) 1973-07-24
DE2132127A1 (de) 1972-01-05
FR2096572A1 (ja) 1972-02-18
FR2096572B1 (ja) 1977-01-21
US3683128A (en) 1972-08-08

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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