ES392652A1 - Flux-bridging stereophonic pickup - Google Patents

Flux-bridging stereophonic pickup

Info

Publication number
ES392652A1
ES392652A1 ES392652A ES392652A ES392652A1 ES 392652 A1 ES392652 A1 ES 392652A1 ES 392652 A ES392652 A ES 392652A ES 392652 A ES392652 A ES 392652A ES 392652 A1 ES392652 A1 ES 392652A1
Authority
ES
Spain
Prior art keywords
pickup
flux
gaps
bridging
operating gaps
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
ES392652A
Other languages
Spanish (es)
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
Original Assignee
GRADO
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 filed Critical GRADO
Publication of ES392652A1 publication Critical patent/ES392652A1/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)

Abstract

A phonograph pickup for the reproduction of stereophonic and/or monaural sound recordings in which signals are induced without substantially disrupting the flux path of the several operating gaps and wherein a flux-bridging member is operatively connected to the moving stylus of the pickup and disposed in proximity to the first and second operating gaps, but out of a direct flux path between such gaps, to effectively shorten the fixed gap length of one of the operating gaps and to correspondingly effectively lengthen the gap length of the other of the operating gaps and to induce corresponding signals in the pickup related to such stylus motion.
ES392652A 1970-06-29 1971-06-26 Flux-bridging stereophonic pickup Expired ES392652A1 (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
ES392652A1 true ES392652A1 (en) 1973-08-01

Family

ID=21966368

Family Applications (1)

Application Number Title Priority Date Filing Date
ES392652A Expired ES392652A1 (en) 1970-06-29 1971-06-26 Flux-bridging stereophonic pickup

Country Status (9)

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

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 (en) * 1975-07-29 1978-01-25 Akg Akustische Kino Geraete CARTRIDGE

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 (en) * 1966-10-20 1968-10-04 Matsushita Electric Ind Co Ltd Magnetic pick-up of stereophonic phonograph
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

Also Published As

Publication number Publication date
US3683128A (en) 1972-08-08
NL161647B (en) 1979-09-17
GB1318665A (en) 1973-05-31
CA930674A (en) 1973-07-24
DE2132127B2 (en) 1974-05-16
CH541269A (en) 1973-08-31
DE2132127A1 (en) 1972-01-05
NL161647C (en) 1980-02-15
DE2132127C3 (en) 1974-12-12
FR2096572A1 (en) 1972-02-18
NL7108816A (en) 1971-12-31
FR2096572B1 (en) 1977-01-21
JPS5021241B1 (en) 1975-07-22

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19850527