JPS57113689A - Ultrasonic wave transmitter-receiver - Google Patents

Ultrasonic wave transmitter-receiver

Info

Publication number
JPS57113689A
JPS57113689A JP18819280A JP18819280A JPS57113689A JP S57113689 A JPS57113689 A JP S57113689A JP 18819280 A JP18819280 A JP 18819280A JP 18819280 A JP18819280 A JP 18819280A JP S57113689 A JPS57113689 A JP S57113689A
Authority
JP
Japan
Prior art keywords
variance
oscillator
conductive elastic
receiver
ultrasonic wave
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.)
Granted
Application number
JP18819280A
Other languages
English (en)
Japanese (ja)
Other versions
JPS632199B2 (2
Inventor
Tsuneo Torii
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP18819280A priority Critical patent/JPS57113689A/ja
Publication of JPS57113689A publication Critical patent/JPS57113689A/ja
Publication of JPS632199B2 publication Critical patent/JPS632199B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
JP18819280A 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver Granted JPS57113689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18819280A JPS57113689A (en) 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18819280A JPS57113689A (en) 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver

Publications (2)

Publication Number Publication Date
JPS57113689A true JPS57113689A (en) 1982-07-15
JPS632199B2 JPS632199B2 (2) 1988-01-18

Family

ID=16219374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18819280A Granted JPS57113689A (en) 1980-12-29 1980-12-29 Ultrasonic wave transmitter-receiver

Country Status (1)

Country Link
JP (1) JPS57113689A (2)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640830A (en) * 1984-09-13 1987-02-03 Nikkiso Co., Ltd. Process for preparing fine fibers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219554U (2) * 1975-07-30 1977-02-12
JPS53103676U (2) * 1977-01-25 1978-08-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219554U (2) * 1975-07-30 1977-02-12
JPS53103676U (2) * 1977-01-25 1978-08-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640830A (en) * 1984-09-13 1987-02-03 Nikkiso Co., Ltd. Process for preparing fine fibers

Also Published As

Publication number Publication date
JPS632199B2 (2) 1988-01-18

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