JPS5546152A - Earthquake sensing unit - Google Patents
Earthquake sensing unitInfo
- Publication number
- JPS5546152A JPS5546152A JP11969378A JP11969378A JPS5546152A JP S5546152 A JPS5546152 A JP S5546152A JP 11969378 A JP11969378 A JP 11969378A JP 11969378 A JP11969378 A JP 11969378A JP S5546152 A JPS5546152 A JP S5546152A
- Authority
- JP
- Japan
- Prior art keywords
- concave
- sensing unit
- steel ball
- entire circumference
- stable operation
- 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
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To give stable operation at earthquake region and to reduce the sensitivity to other mechanical vibrations, by providing the convex curve having fine curvature around the entire circumference at the upper end of the concave or hole mounting steel ball.
CONSTITUTION: The circular concave 12 3.35mm in diameter is placed at the upper surface of the mounting stand 11, and the fine convex curved surface 13 in 0.2W 0.3mm in curvature is formed at the entire circumference at the upper end of the concave 12. The operation characteristics of steel ball having the radius of 7/8 inch for example, mounted on this concave 12 shows very stable operation at the earthquake region (1.4W3.3Hz) and it is insensitive to the mechanical vibration (more than 10Hz).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11969378A JPS5546152A (en) | 1978-09-28 | 1978-09-28 | Earthquake sensing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11969378A JPS5546152A (en) | 1978-09-28 | 1978-09-28 | Earthquake sensing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5546152A true JPS5546152A (en) | 1980-03-31 |
Family
ID=14767714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11969378A Pending JPS5546152A (en) | 1978-09-28 | 1978-09-28 | Earthquake sensing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5546152A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6163239A (en) * | 1984-09-04 | 1986-04-01 | Teikoku Denki Seisakusho:Kk | Method of high-frequency thawing of frozen tuna |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126359U (en) * | 1974-08-15 | 1976-02-26 |
-
1978
- 1978-09-28 JP JP11969378A patent/JPS5546152A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126359U (en) * | 1974-08-15 | 1976-02-26 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6163239A (en) * | 1984-09-04 | 1986-04-01 | Teikoku Denki Seisakusho:Kk | Method of high-frequency thawing of frozen tuna |
JPS6225008B2 (en) * | 1984-09-04 | 1987-06-01 | Teikoku Denki Seisakusho Kk |
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