JPS64810A - Ultrasonic delay line - Google Patents

Ultrasonic delay line

Info

Publication number
JPS64810A
JPS64810A JP1580788A JP1580788A JPS64810A JP S64810 A JPS64810 A JP S64810A JP 1580788 A JP1580788 A JP 1580788A JP 1580788 A JP1580788 A JP 1580788A JP S64810 A JPS64810 A JP S64810A
Authority
JP
Japan
Prior art keywords
signal route
sound
main signal
main surface
coating patterns
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.)
Pending
Application number
JP1580788A
Other languages
Japanese (ja)
Other versions
JPH01810A (en
Inventor
Kaoru Asano
Atsuhito Hashimoto
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP1580788A priority Critical patent/JPS64810A/en
Publication of JPH01810A publication Critical patent/JPH01810A/en
Publication of JPS64810A publication Critical patent/JPS64810A/en
Pending legal-status Critical Current

Links

Landscapes

  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE: To reduce unnecessary signals by arranging a sound absorber in a part other than the main signal route of a piezoelectric body so that the absorber slightly projects to the main signal route.
CONSTITUTION: The plane of the main surface of an ultrasonic delay medium 1 is a pentagon which is obtained by cutting two corners in both ends of one short side of a rectangle and has an axis of symmetry. A piezoelectric body 2 is attached to an oblique side AB as the attaching part, and the center is shifted to the B side of the oblique side AB by an extent (x). A sound absorbent 3 is coated on the main surface of the delay medium 1, and the sound absorbent 3 has rectangular coating patterns (e) and (f) in the center part of the main surface. With respect to triangular coating patterns (a), (b), and (c) and tetragonal coating patterns (g), (h), and (i), the sound ablsorbent is coated in the area other than the main signal route so that it slightly projects to the main signal route. The sound absorbent 3 is arranged in this manner to attenuate unnecessary signals.
COPYRIGHT: (C)1989,JPO&Japio
JP1580788A 1987-03-12 1988-01-28 Ultrasonic delay line Pending JPS64810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1580788A JPS64810A (en) 1987-03-12 1988-01-28 Ultrasonic delay line

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-55308 1987-03-12
JP5530887 1987-03-12
JP1580788A JPS64810A (en) 1987-03-12 1988-01-28 Ultrasonic delay line

Publications (2)

Publication Number Publication Date
JPH01810A JPH01810A (en) 1989-01-05
JPS64810A true JPS64810A (en) 1989-01-05

Family

ID=26352023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1580788A Pending JPS64810A (en) 1987-03-12 1988-01-28 Ultrasonic delay line

Country Status (1)

Country Link
JP (1) JPS64810A (en)

Similar Documents

Publication Publication Date Title
JPS57202114A (en) Band pass filter
FI863702L (en) Use of a carbohydrate compound for the in vitro preparation or isolation of virus particles or virus surface components
DE2960263D1 (en) Piezoelectric transducers with mechanical amplification for very low frequencies and acoustic antennas
JPS5660200A (en) Electroacoustic transducer
JPS55145419A (en) Elastic surface wave device
JPS64810A (en) Ultrasonic delay line
JPS5596713A (en) Outline vibration mode piezo-vibrator
JPS56144585A (en) Bimorph piezoelectric element
JPS55130219A (en) Surface elastic wave filter
JPS53109457A (en) Element for elastic surface wave propagation
JPS5885611A (en) Surface acoustic wave element
IE842293L (en) Absorbent body with fluid transport means.
JPS5552697A (en) Speaker
JPS57186819A (en) Surface acoustic wave filter element
JPS5533341A (en) Elastic surface wave device
JPS62119022U (en)
JPS5665392A (en) Magnetic bubble detection pattern
JPS52115254A (en) Ultrasonic transducer
JPS63147028U (en)
JPS62143328U (en)
JPS5619216A (en) Manufacture of ultrasonic delay line
JPS5840928U (en) surface acoustic wave filter
JPS5917635U (en) ultrasonic delay line
JPH0158610U (en)
JPS5597722A (en) Elastic surface wave device