Electronic Latch Retraction For Mortise Lock and Methods of Operation
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United States of America Patent
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Issued Date -
Feb 29, 2024
app pub date -
Aug 28, 2023
filing date -
Aug 31, 2022
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Abstract
A mortise lock and motor-assisted method of operating. The mortise lock comprises a case, a lever arm, a latch bolt having a linkage, a PCB having a controller and a microprocessor, and a motor assembly. An actuating element including a projection is disposed outside the motor assembly to move the latch bolt from the extended to retracted positions. The microprocessor is configured to detect a stall signal during the motor assembly's initial cycle operation indicating failure of a latch bolt retraction parameter. Upon detection of the stall signal, the controller causes the motor assembly to perform a second cycle operation to move the latch bolt from the extended position to the retracted position.
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