Elevator car door interlock
AssigneeOtis Elevator Company
InventorsRichard E. Kulak, Michael J. Tracey
Life of this patent
Estimating the term…
Abstract
An elevator car door interlock for unlocking an elevator car door of an elevator car is provided including a lock member (54) including an electrical contact (72). A rotatable link arm (58) has a sensing mechanism (52, 62) configured to detect a position of the elevator car door. An engagement latch (64) is pivotally mounted to the rotatable link arm. The engagement latch is engaged with the electrical contact when the elevator car door is locked. The engagement latch is rotated out of engagement with the electrical contact when the elevator car door is unlocked.
Claims11
An elevator car door interlock for unlocking an elevator car door of an elevator car, comprising:
- a lock member including an electrical contact;
- a link arm having a sensing mechanism, the link arm being rotatable about a first axis to detect a position of the elevator car door via engagement with an adjacent door vane;
- and
- an engagement latch pivotally mounted to the rotatable link arm via a pivot pin defining a second axis, wherein the engagement latch is engaged with the electrical contact when the elevator car door is locked, and the engagement latch is rotated out of engagement with the electrical contact when the elevator car door is unlocked, wherein the rotatable link arm and the engagement latch are rotatable about the second axis defined by the pivot pin in response to engagement between the sensing mechanism and the adjacent door vane.
Dependencies are inferred from the claim text.