JPS645593U - - Google Patents
Info
- Publication number
- JPS645593U JPS645593U JP9922787U JP9922787U JPS645593U JP S645593 U JPS645593 U JP S645593U JP 9922787 U JP9922787 U JP 9922787U JP 9922787 U JP9922787 U JP 9922787U JP S645593 U JPS645593 U JP S645593U
- Authority
- JP
- Japan
- Prior art keywords
- back cavity
- sound absorbing
- speaker
- absorbing material
- aluminum foam
- 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
- 239000011358 absorbing material Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 2
- 239000011491 glass wool Substances 0.000 description 1
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9922787U JPS645593U (zh) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9922787U JPS645593U (zh) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645593U true JPS645593U (zh) | 1989-01-12 |
Family
ID=31326189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9922787U Pending JPS645593U (zh) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645593U (zh) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224695A (ja) * | 1989-02-27 | 1990-09-06 | Hirose Mfg Co Ltd | 半回転かま |
| JPH0390189A (ja) * | 1989-09-02 | 1991-04-16 | Brother Ind Ltd | 半回転かま |
| JPH0626786U (ja) * | 1992-09-08 | 1994-04-12 | ブラザー工業株式会社 | 空転防止バネ付ボビンケース |
-
1987
- 1987-06-30 JP JP9922787U patent/JPS645593U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224695A (ja) * | 1989-02-27 | 1990-09-06 | Hirose Mfg Co Ltd | 半回転かま |
| JPH0390189A (ja) * | 1989-09-02 | 1991-04-16 | Brother Ind Ltd | 半回転かま |
| JPH0626786U (ja) * | 1992-09-08 | 1994-04-12 | ブラザー工業株式会社 | 空転防止バネ付ボビンケース |