JPH0136157Y2 - - Google Patents
Info
- Publication number
- JPH0136157Y2 JPH0136157Y2 JP454581U JP454581U JPH0136157Y2 JP H0136157 Y2 JPH0136157 Y2 JP H0136157Y2 JP 454581 U JP454581 U JP 454581U JP 454581 U JP454581 U JP 454581U JP H0136157 Y2 JPH0136157 Y2 JP H0136157Y2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric ceramic
- detection device
- object detection
- lid
- protrusion
- 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
Links
- 239000000919 ceramic Substances 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP454581U JPH0136157Y2 (en]) | 1981-01-19 | 1981-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP454581U JPH0136157Y2 (en]) | 1981-01-19 | 1981-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57118370U JPS57118370U (en]) | 1982-07-22 |
| JPH0136157Y2 true JPH0136157Y2 (en]) | 1989-11-02 |
Family
ID=29802962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP454581U Expired JPH0136157Y2 (en]) | 1981-01-19 | 1981-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0136157Y2 (en]) |
-
1981
- 1981-01-19 JP JP454581U patent/JPH0136157Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57118370U (en]) | 1982-07-22 |
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