JPS548522A - Electromagnetic controller of cameras - Google Patents
Electromagnetic controller of camerasInfo
- Publication number
- JPS548522A JPS548522A JP7351377A JP7351377A JPS548522A JP S548522 A JPS548522 A JP S548522A JP 7351377 A JP7351377 A JP 7351377A JP 7351377 A JP7351377 A JP 7351377A JP S548522 A JPS548522 A JP S548522A
- Authority
- JP
- Japan
- Prior art keywords
- cameras
- electromagnetic controller
- dustproof case
- signal member
- electromagnet
- 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.)
- Granted
Links
Landscapes
- Shutters For Cameras (AREA)
- Shutter-Related Mechanisms (AREA)
Abstract
PURPOSE: To perfectly prevent the entry of dust into dustproof case by disposing a permanent magnet to the circumference of the take-out port at one end of the signal member of the dustproof case which contains an electromagnet, its suction member and the signal member operating cooperatively with this, and hermetically sealing the spacing thereof with magnetic fluid.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7351377A JPS548522A (en) | 1977-06-21 | 1977-06-21 | Electromagnetic controller of cameras |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7351377A JPS548522A (en) | 1977-06-21 | 1977-06-21 | Electromagnetic controller of cameras |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS548522A true JPS548522A (en) | 1979-01-22 |
JPS611732B2 JPS611732B2 (en) | 1986-01-20 |
Family
ID=13520393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7351377A Granted JPS548522A (en) | 1977-06-21 | 1977-06-21 | Electromagnetic controller of cameras |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS548522A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4339190A (en) * | 1980-01-08 | 1982-07-13 | Canon Kabushiki Kaisha | Electromagnetically driven focal plane shutter |
-
1977
- 1977-06-21 JP JP7351377A patent/JPS548522A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4339190A (en) * | 1980-01-08 | 1982-07-13 | Canon Kabushiki Kaisha | Electromagnetically driven focal plane shutter |
Also Published As
Publication number | Publication date |
---|---|
JPS611732B2 (en) | 1986-01-20 |
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