Safety Lock For Elevator Landing Door Detecting Intrusion In The Shaft Through The Landing Door And Elevator Thus Equipped

The invention relates to a safety lock ( 1 ) for an elevator landing door detecting intrusion of a person in the shaft through the landing door, activating a bistable switch ( 21 ) through its spindle lever ( 11 ) putting the elevator into safe operation when the landing door is opened by turning th...

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Bibliographic Details
Main Authors PILLIN DAVID, FOUGERON SEBASTIEN, SIRIGU GERARD
Format Patent
LanguageEnglish
Published 12.06.2008
Subjects
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
TRANSPORTING
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Summary:The invention relates to a safety lock ( 1 ) for an elevator landing door detecting intrusion of a person in the shaft through the landing door, activating a bistable switch ( 21 ) through its spindle lever ( 11 ) putting the elevator into safe operation when the landing door is opened by turning the corresponding key, it being impossible to reset the switch ( 21 ) manually from the inside of the shaft, which comprises a device ( 17 ) fixing the lock in the open position with the door open, that is released when the door is closed such that the switch ( 21 ) can be reset by turning the lock ( 1 ) in the closing direction of the door in which the key is turned in the opposite direction to the opening direction, the switch ( 21 ) being reset mechanically by a mechanical means connected to the spindle lever ( 11 ).
Bibliography:Application Number: US20050815330