GB579524A - Improvements relating to electrical devices employing piezo-electric crystals - Google Patents

Improvements relating to electrical devices employing piezo-electric crystals

Info

Publication number
GB579524A
GB579524A GB9356/44A GB935644A GB579524A GB 579524 A GB579524 A GB 579524A GB 9356/44 A GB9356/44 A GB 9356/44A GB 935644 A GB935644 A GB 935644A GB 579524 A GB579524 A GB 579524A
Authority
GB
United Kingdom
Prior art keywords
electrical devices
crystal
improvements relating
devices employing
electric crystals
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
GB9356/44A
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.)
Cosmocord Ltd
Original Assignee
Cosmocord Ltd
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 Cosmocord Ltd filed Critical Cosmocord Ltd
Publication of GB579524A publication Critical patent/GB579524A/en
Expired legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manipulator (AREA)

Abstract

579,524. Gramophone pick - ups. COSMOCORD, Ltd., and SCHIDHANN, A. May 16, 1944, No. 9356. [Class 40 (iv)] [Also in Group XL] In a gramophone pick-up or the like, stress is applied to the crystal through a torsionally actuated flexible coupling. The stylus 1 is mounted in a transmission member 2 carried in bearings 3 and coupled through a member 8 to a claw 6 gripping a plate 5 of Rochelle Salt or like piezo-electric crystal held between blocks 9. The coupling member 8 is in the form of a rubber tube embracing cylindrical projections 4, 7 on member 2 and claw 6. The member 8 may be a rod engaging sockets on the parts 2, 6 or may be a flat plate or a flattish tube (Figs. 2-5, not shown). The fixed end of the crystal may be similarly connected to its support.
GB9356/44A 1944-05-16 1944-05-16 Improvements relating to electrical devices employing piezo-electric crystals Expired GB579524A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB254573X 1944-05-16
GB110645X 1945-06-11

Publications (1)

Publication Number Publication Date
GB579524A true GB579524A (en) 1946-08-07

Family

ID=26248006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9356/44A Expired GB579524A (en) 1944-05-16 1944-05-16 Improvements relating to electrical devices employing piezo-electric crystals

Country Status (2)

Country Link
CH (1) CH254573A (en)
GB (1) GB579524A (en)

Also Published As

Publication number Publication date
CH254573A (en) 1948-05-15

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