JPS5259443A - Apparatus for detecting unlocking of door - Google Patents

Apparatus for detecting unlocking of door

Info

Publication number
JPS5259443A
JPS5259443A JP13290975A JP13290975A JPS5259443A JP S5259443 A JPS5259443 A JP S5259443A JP 13290975 A JP13290975 A JP 13290975A JP 13290975 A JP13290975 A JP 13290975A JP S5259443 A JPS5259443 A JP S5259443A
Authority
JP
Japan
Prior art keywords
door
apparatus
locking apparatus
detecting
detecting unlocking
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
JP13290975A
Inventor
Yoshinosuke Oota
Nobuyoshi Sato
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13290975A priority Critical patent/JPS5259443A/en
Publication of JPS5259443A publication Critical patent/JPS5259443A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a locking apparatus for electrically operated door of elevator, which comprises a switch means for detecting that locking apparatus is unlocked and circuit for giving door-opening instructio, so that failing of door opening due to mal-function of door driving motor can be prevented.
COPYRIGHT: (C)1977,JPO&Japio
JP13290975A 1975-11-07 1975-11-07 Apparatus for detecting unlocking of door Pending JPS5259443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13290975A JPS5259443A (en) 1975-11-07 1975-11-07 Apparatus for detecting unlocking of door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13290975A JPS5259443A (en) 1975-11-07 1975-11-07 Apparatus for detecting unlocking of door

Publications (1)

Publication Number Publication Date
JPS5259443A true JPS5259443A (en) 1977-05-16

Family

ID=15092351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13290975A Pending JPS5259443A (en) 1975-11-07 1975-11-07 Apparatus for detecting unlocking of door

Country Status (1)

Country Link
JP (1) JPS5259443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139112A (en) * 1990-10-31 1992-08-18 Otis Elevator Company Elevator car door lock
CN103350943A (en) * 2013-05-22 2013-10-16 杨贵庭 Simple lifter guillotine device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139112A (en) * 1990-10-31 1992-08-18 Otis Elevator Company Elevator car door lock
CN103350943A (en) * 2013-05-22 2013-10-16 杨贵庭 Simple lifter guillotine device

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