US 11,795,033 B2
Elevator car door interlock
Richard E. Kulak, Bristol, CT (US); and Michael J. Tracey, Cromwell, CT (US)
Assigned to OTIS ELEVATOR COMPANY, Farmington, CT (US)
Filed by Otis Elevator Company, Farmington, CT (US)
Filed on Aug. 20, 2021, as Appl. No. 17/407,899.
Application 16/850,196 is a division of application No. 15/749,060, granted, now 10,882,720, previously published as PCT/US2016/045155, filed on Aug. 2, 2016.
Application 17/407,899 is a continuation of application No. 16/850,196, filed on Apr. 16, 2020, granted, now 11,124,389.
Claims priority of provisional application 62/200,910, filed on Aug. 4, 2015.
Prior Publication US 2021/0380373 A1, Dec. 9, 2021
Int. Cl. B66B 13/20 (2006.01); B66B 13/18 (2006.01); B66B 13/12 (2006.01)
CPC B66B 13/20 (2013.01) [B66B 13/12 (2013.01); B66B 13/18 (2013.01)] 9 Claims
OG exemplary drawing
 
1. 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.