JPH0224318Y2 - - Google Patents
Info
- Publication number
- JPH0224318Y2 JPH0224318Y2 JP5939985U JP5939985U JPH0224318Y2 JP H0224318 Y2 JPH0224318 Y2 JP H0224318Y2 JP 5939985 U JP5939985 U JP 5939985U JP 5939985 U JP5939985 U JP 5939985U JP H0224318 Y2 JPH0224318 Y2 JP H0224318Y2
- Authority
- JP
- Japan
- Prior art keywords
- housing
- support member
- piezoelectric speaker
- ventilation resistance
- resistance means
- 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
- 238000009423 ventilation Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Telephone Set Structure (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5939985U JPH0224318Y2 (cg-RX-API-DMAC10.html) | 1985-04-19 | 1985-04-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5939985U JPH0224318Y2 (cg-RX-API-DMAC10.html) | 1985-04-19 | 1985-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61176899U JPS61176899U (cg-RX-API-DMAC10.html) | 1986-11-05 |
| JPH0224318Y2 true JPH0224318Y2 (cg-RX-API-DMAC10.html) | 1990-07-03 |
Family
ID=30585794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5939985U Expired JPH0224318Y2 (cg-RX-API-DMAC10.html) | 1985-04-19 | 1985-04-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0224318Y2 (cg-RX-API-DMAC10.html) |
-
1985
- 1985-04-19 JP JP5939985U patent/JPH0224318Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61176899U (cg-RX-API-DMAC10.html) | 1986-11-05 |
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