Patent ID: 6508332
Filing Date: 2003-01-21
Classification: B66B

Abstract:
An elevator car door opening and closing system comprising:a landing door slidingly attached to a landing site, said landing door including coupling means, positioned on the hoist side of said door, for opening and closing said door, an elevator car door slidingly attached to an elevator car, door opening and closing apparatus for simultaneously opening and closing said landing door and said car door said apparatus comprising: an electrically powered door operator attached to said elevator car for opening and closing said doors, clutch means affixed to the hoist side of said elevator car door and kinematicly attached to said door operator, said clutch means including a single mechanical expanding and collapsing parallelogram linkage whereby said collapsing parallelogram linkage engages said landing door coupling means such that said landing door opens and closes simultaneously with said elevator car door.