GB765835A - Improvements in and relating to piezo-electric devices - Google Patents

Improvements in and relating to piezo-electric devices

Info

Publication number
GB765835A
GB765835A GB23965/51A GB2396551A GB765835A GB 765835 A GB765835 A GB 765835A GB 23965/51 A GB23965/51 A GB 23965/51A GB 2396551 A GB2396551 A GB 2396551A GB 765835 A GB765835 A GB 765835A
Authority
GB
United Kingdom
Prior art keywords
resin
per cent
cement
moisture
piezo
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
GB23965/51A
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.)
ROBERT HEINRICH STURM
Cosmocord Ltd
Original Assignee
ROBERT HEINRICH STURM
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 ROBERT HEINRICH STURM, Cosmocord Ltd filed Critical ROBERT HEINRICH STURM
Priority to GB23965/51A priority Critical patent/GB765835A/en
Priority to NL173120A priority patent/NL83289C/xx
Publication of GB765835A publication Critical patent/GB765835A/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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H04R17/025—Microphones using a piezoelectric polymer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Paints Or Removers (AREA)
GB23965/51A 1951-10-15 1951-10-15 Improvements in and relating to piezo-electric devices Expired GB765835A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB23965/51A GB765835A (en) 1951-10-15 1951-10-15 Improvements in and relating to piezo-electric devices
NL173120A NL83289C (enExample) 1951-10-15 1952-10-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23965/51A GB765835A (en) 1951-10-15 1951-10-15 Improvements in and relating to piezo-electric devices

Publications (1)

Publication Number Publication Date
GB765835A true GB765835A (en) 1957-01-16

Family

ID=10204234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23965/51A Expired GB765835A (en) 1951-10-15 1951-10-15 Improvements in and relating to piezo-electric devices

Country Status (2)

Country Link
GB (1) GB765835A (enExample)
NL (1) NL83289C (enExample)

Also Published As

Publication number Publication date
NL83289C (enExample) 1956-11-15

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