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US 11,795,033 B2Granted
Elevator car door interlock
AssigneeOtis Elevator Company
InventorsRichard E. Kulak, Michael J. Tracey
Life of this patent
Estimating the term…
Abstract
A method of unlocking an elevator car door or an elevator car includes operating a door operator and moving a movable vane operably coupled to the door operator. If the elevator car is positioned within a landing door zone, the movable vane is moved into contact with an interlock roller. An engagement latch is rotated to disengage from an electrical contact in response to moving the movable vane into contact with the interlock roller.
Claims9
A method of unlocking an elevator car door or an elevator car, comprising:
- operating a door operator;
- rotating a link arm of a car door interlock operably coupled to the door operator about a first axis such that a sensing mechanism coupled to the link arm is moved into contact with a movable vane;
- and
- moving the movable vane operably coupled to the door operator via the sensing mechanism, wherein if the elevator car is positioned within a landing door zone during the rotating of the link arm, the movable vane is moved into contact with an interlock roller and an engagement latch is pivoted about a second axis to disengage from an electrical contact in response to moving the movable vane into contact with the interlock roller.
1 more element
Dependencies are inferred from the claim text.