JPS5295855A - Safety device for opening and closing large hinged doors - Google Patents
Safety device for opening and closing large hinged doorsInfo
- Publication number
- JPS5295855A JPS5295855A JP1187776A JP1187776A JPS5295855A JP S5295855 A JPS5295855 A JP S5295855A JP 1187776 A JP1187776 A JP 1187776A JP 1187776 A JP1187776 A JP 1187776A JP S5295855 A JPS5295855 A JP S5295855A
- Authority
- JP
- Japan
- Prior art keywords
- doors
- opening
- safety device
- hinged doors
- closing large
- 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 increase the safety of hinged doors wherein the circuit for operating a screw type cylinder is not actuated unless metallic locks for the doors are released, which doors thereby permits preventing a motor from being burnt and which doors can be thereby prevented from being broken.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1187776A JPS5295855A (en) | 1976-02-06 | 1976-02-06 | Safety device for opening and closing large hinged doors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1187776A JPS5295855A (en) | 1976-02-06 | 1976-02-06 | Safety device for opening and closing large hinged doors |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5295855A true JPS5295855A (en) | 1977-08-11 |
Family
ID=11789947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1187776A Pending JPS5295855A (en) | 1976-02-06 | 1976-02-06 | Safety device for opening and closing large hinged doors |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5295855A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4844230B1 (en) * | 1969-12-16 | 1973-12-24 |
-
1976
- 1976-02-06 JP JP1187776A patent/JPS5295855A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4844230B1 (en) * | 1969-12-16 | 1973-12-24 |
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