KR900017513U - Vibration detector - Google Patents

Vibration detector

Info

Publication number
KR900017513U
KR900017513U KR2019900003325U KR900003325U KR900017513U KR 900017513 U KR900017513 U KR 900017513U KR 2019900003325 U KR2019900003325 U KR 2019900003325U KR 900003325 U KR900003325 U KR 900003325U KR 900017513 U KR900017513 U KR 900017513U
Authority
KR
South Korea
Prior art keywords
vibration detector
vibration
detector
Prior art date
Application number
KR2019900003325U
Other languages
Korean (ko)
Other versions
KR930005099Y1 (en
Inventor
사도시 고무라사키
Original Assignee
미쓰비시덴키가부시키가이샤
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 미쓰비시덴키가부시키가이샤 filed Critical 미쓰비시덴키가부시키가이샤
Publication of KR900017513U publication Critical patent/KR900017513U/en
Application granted granted Critical
Publication of KR930005099Y1 publication Critical patent/KR930005099Y1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
    • G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
    • G01L23/222—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines using piezoelectric devices

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
KR2019900003325U 1989-03-29 1990-03-21 Vibration detector KR930005099Y1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1989034843U JPH02128533U (en) 1989-03-29 1989-03-29
JP1-34843 1989-09-25

Publications (2)

Publication Number Publication Date
KR900017513U true KR900017513U (en) 1990-10-05
KR930005099Y1 KR930005099Y1 (en) 1993-08-04

Family

ID=12425475

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900003325U KR930005099Y1 (en) 1989-03-29 1990-03-21 Vibration detector

Country Status (2)

Country Link
JP (1) JPH02128533U (en)
KR (1) KR930005099Y1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100868910B1 (en) * 2002-03-19 2008-11-18 민병이 External pressure reinforcement pipe made of synthetic resin for water and sewage pipe
KR20030083513A (en) * 2002-04-23 2003-10-30 변무원 Double lay water pipe

Also Published As

Publication number Publication date
KR930005099Y1 (en) 1993-08-04
JPH02128533U (en) 1990-10-23

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Legal Events

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E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
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FPAY Annual fee payment

Payment date: 20040723

Year of fee payment: 12

EXPY Expiration of term