JPH0245135B2 - - Google Patents

Info

Publication number
JPH0245135B2
JPH0245135B2 JP59259796A JP25979684A JPH0245135B2 JP H0245135 B2 JPH0245135 B2 JP H0245135B2 JP 59259796 A JP59259796 A JP 59259796A JP 25979684 A JP25979684 A JP 25979684A JP H0245135 B2 JPH0245135 B2 JP H0245135B2
Authority
JP
Japan
Prior art keywords
liquid
light
output
amount
earthquake sensor
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 - Lifetime
Application number
JP59259796A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61137025A (ja
Inventor
Hiroshi Ko
Takashi Tokuyama
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.)
Fuji Tetsuku Kk
Original Assignee
Fuji Tetsuku Kk
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 Fuji Tetsuku Kk filed Critical Fuji Tetsuku Kk
Priority to JP59259796A priority Critical patent/JPS61137025A/ja
Priority to US06/729,117 priority patent/US4662225A/en
Priority to GB08510935A priority patent/GB2160319B/en
Publication of JPS61137025A publication Critical patent/JPS61137025A/ja
Publication of JPH0245135B2 publication Critical patent/JPH0245135B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP59259796A 1984-05-01 1984-12-08 地震感知器 Granted JPS61137025A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP59259796A JPS61137025A (ja) 1984-12-08 1984-12-08 地震感知器
US06/729,117 US4662225A (en) 1984-05-01 1985-04-30 Seismic detector
GB08510935A GB2160319B (en) 1984-05-01 1985-04-30 Detecting of seismic waves by sensing the movement of a liquid surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59259796A JPS61137025A (ja) 1984-12-08 1984-12-08 地震感知器

Publications (2)

Publication Number Publication Date
JPS61137025A JPS61137025A (ja) 1986-06-24
JPH0245135B2 true JPH0245135B2 (enrdf_load_stackoverflow) 1990-10-08

Family

ID=17339111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59259796A Granted JPS61137025A (ja) 1984-05-01 1984-12-08 地震感知器

Country Status (1)

Country Link
JP (1) JPS61137025A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0178670U (enrdf_load_stackoverflow) * 1987-11-17 1989-05-26

Also Published As

Publication number Publication date
JPS61137025A (ja) 1986-06-24

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