JPS51140344A - Method and apparatus for automatically closing anti-smoke fire door - Google Patents

Method and apparatus for automatically closing anti-smoke fire door

Info

Publication number
JPS51140344A
JPS51140344A JP6503575A JP6503575A JPS51140344A JP S51140344 A JPS51140344 A JP S51140344A JP 6503575 A JP6503575 A JP 6503575A JP 6503575 A JP6503575 A JP 6503575A JP S51140344 A JPS51140344 A JP S51140344A
Authority
JP
Japan
Prior art keywords
fire door
automatically closing
smoke fire
closing anti
magnet
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
Application number
JP6503575A
Other languages
Japanese (ja)
Inventor
Mitsuharu Toda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHOWA SAAJIENTO KK
Original Assignee
SHOWA SAAJIENTO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHOWA SAAJIENTO KK filed Critical SHOWA SAAJIENTO KK
Priority to JP6503575A priority Critical patent/JPS51140344A/en
Publication of JPS51140344A publication Critical patent/JPS51140344A/en
Pending legal-status Critical Current

Links

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  • Special Wing (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

PURPOSE: To provide an anti-smoke fire door for automatically closing the door by closing an electric contact upon indication of a smoke detector to provide magnetic flux for an electro-magnet and by repelling it by the balance of the magnet with a permanent magnet to provide easy refuge and early fire reistance.
COPYRIGHT: (C)1976,JPO&Japio
JP6503575A 1975-05-29 1975-05-29 Method and apparatus for automatically closing anti-smoke fire door Pending JPS51140344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6503575A JPS51140344A (en) 1975-05-29 1975-05-29 Method and apparatus for automatically closing anti-smoke fire door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6503575A JPS51140344A (en) 1975-05-29 1975-05-29 Method and apparatus for automatically closing anti-smoke fire door

Publications (1)

Publication Number Publication Date
JPS51140344A true JPS51140344A (en) 1976-12-03

Family

ID=13275308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6503575A Pending JPS51140344A (en) 1975-05-29 1975-05-29 Method and apparatus for automatically closing anti-smoke fire door

Country Status (1)

Country Link
JP (1) JPS51140344A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01130361U (en) * 1988-02-25 1989-09-05
KR100329171B1 (en) * 1999-12-03 2002-03-21 한남건 Apparatus for locking door

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029738B2 (en) * 1971-08-06 1975-09-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029738B2 (en) * 1971-08-06 1975-09-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01130361U (en) * 1988-02-25 1989-09-05
KR100329171B1 (en) * 1999-12-03 2002-03-21 한남건 Apparatus for locking door

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