Patent ID: 11945685
Assignee: OTIS ELEVATOR COMPANY
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An elevator door lock, comprising:
a latch that is moveable between a locking position and a released position, the latch including a locking surface configured to engage a stop when the latch is in the locking position, and wherein
the locking surface is near a first end of the latch, and
the latch pivots about a pivot axis as the latch moves between the locking position and the released position; and

a magnet that is situated to magnetically attract a portion of the latch to selectively move the latch from the locking position into the released position, wherein
the portion of the latch that is magnetically attracted by the magnet is near a second end of the latch,
a mass of the latch is greater near the second end,
gravity biases the second end in a downward direction to move the latch into the locking position,
the magnet attracts the portion against the bias of gravity to move the latch into the released position,
the magnet is supported for movement relative to the latch between a first position and a second position,
the latch is in the locking position when the magnet is in the first position,
the magnet attracts the portion of the latch when the magnet is in the second position, and
the latch is in the released position when the magnet is in the second position.