CH323037A - Record groove scanner with at least two scanning needles, the holders of which are externally damped - Google Patents

Record groove scanner with at least two scanning needles, the holders of which are externally damped

Info

Publication number
CH323037A
CH323037A CH323037DA CH323037A CH 323037 A CH323037 A CH 323037A CH 323037D A CH323037D A CH 323037DA CH 323037 A CH323037 A CH 323037A
Authority
CH
Switzerland
Prior art keywords
holders
record groove
scanning needles
damped
externally
Prior art date
Application number
Other languages
German (de)
Inventor
Wittenberg Nico
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH323037A publication Critical patent/CH323037A/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/06Gramophone pick-ups using a stylus; Recorders using a stylus comprising two or more styli or transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Moving Of Heads (AREA)
CH323037D 1953-09-17 1954-09-15 Record groove scanner with at least two scanning needles, the holders of which are externally damped CH323037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL323037X 1953-09-17

Publications (1)

Publication Number Publication Date
CH323037A true CH323037A (en) 1957-07-15

Family

ID=19784069

Family Applications (1)

Application Number Title Priority Date Filing Date
CH323037D CH323037A (en) 1953-09-17 1954-09-15 Record groove scanner with at least two scanning needles, the holders of which are externally damped

Country Status (6)

Country Link
US (1) US3051495A (en)
BE (1) BE531866A (en)
CH (1) CH323037A (en)
DE (1) DE1003966B (en)
FR (1) FR1108245A (en)
GB (1) GB755801A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245690A (en) * 1963-09-18 1966-04-12 Dorothea M Weitzner Adjustable multi-needle tone arm for phonograph records
US4194744A (en) * 1978-02-01 1980-03-25 Shure Brothers, Incorporated Phonograph pick-up transducer using a one-piece bearing and inertial damper fabricated from different materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554209A (en) * 1945-12-29 1951-05-22 Gen Electric Dual stylus phonograph pickup for multispeed record players
US2658763A (en) * 1948-07-31 1953-11-10 Rca Corp Phonograph pickup device and the like
US2601126A (en) * 1948-11-04 1952-06-17 Astatic Corp Universal phonograph tone arm
US2586362A (en) * 1949-03-11 1952-02-19 Magnavox Co Dual point phonograph pickup stylus
US2639156A (en) * 1949-10-29 1953-05-19 Gen Electric Double-twist phonograph stylus assembly

Also Published As

Publication number Publication date
FR1108245A (en) 1956-01-10
US3051495A (en) 1962-08-28
DE1003966B (en) 1957-03-07
GB755801A (en) 1956-08-29
BE531866A (en)

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