JPS5441096A - Miniature electromagnetic buzzer of atmospheric pressure defference countermeasure type - Google Patents
Miniature electromagnetic buzzer of atmospheric pressure defference countermeasure typeInfo
- Publication number
- JPS5441096A JPS5441096A JP10818577A JP10818577A JPS5441096A JP S5441096 A JPS5441096 A JP S5441096A JP 10818577 A JP10818577 A JP 10818577A JP 10818577 A JP10818577 A JP 10818577A JP S5441096 A JPS5441096 A JP S5441096A
- Authority
- JP
- Japan
- Prior art keywords
- atmospheric pressure
- defference
- miniature electromagnetic
- electromagnetic buzzer
- countermeasure type
- 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
Abstract
PURPOSE: To enable the reduction in sound volume owing to atmospheric pressure differences to be eliminated by providing a waterproofing plate composed of a non-magnetic material on the inner side of a diaphragm, and providing holes communicating with the outside between the diaphragm and waterproofing plate thereby eliminating the distortions of the diaphragm owing to atmospheric pressure differences.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10818577A JPS5441096A (en) | 1977-09-08 | 1977-09-08 | Miniature electromagnetic buzzer of atmospheric pressure defference countermeasure type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10818577A JPS5441096A (en) | 1977-09-08 | 1977-09-08 | Miniature electromagnetic buzzer of atmospheric pressure defference countermeasure type |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5441096A true JPS5441096A (en) | 1979-03-31 |
Family
ID=14478144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10818577A Pending JPS5441096A (en) | 1977-09-08 | 1977-09-08 | Miniature electromagnetic buzzer of atmospheric pressure defference countermeasure type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5441096A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57194513A (en) * | 1981-05-26 | 1982-11-30 | Sumida Denki Kk | Coil winding method |
-
1977
- 1977-09-08 JP JP10818577A patent/JPS5441096A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57194513A (en) * | 1981-05-26 | 1982-11-30 | Sumida Denki Kk | Coil winding method |
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