Elevator brake assembly with electromagnet assembly and permanent magnet assembly that engage one another
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United States of America Patent
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Oct 25, 2022
Grant Date -
Aug 19, 2021
app pub date -
Feb 18, 2020
filing date -
Feb 18, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a brake assembly for an elevator system, having: a housing defining a housing cavity, a housing forward end with a forward end opening into the housing cavity, and a housing aft end; a first magnet disposed in the housing cavity, near the forward end opening; a second magnet disposed in the housing cavity, between the first magnet and the housing aft end, and wherein the second magnet is configured to: reduce attraction between itself and the first magnet, whereby the first magnet moves at least partially through the forward end opening to engage a guide rail that is metallic, thereby preventing vertical movement of the first magnet of the brake assembly, when magnetically connected to the rail, relative to the housing; and attract the first magnet to draw the first magnet into the housing cavity.
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