US 12,421,763 B2
Programmable cylinder lock not requiring a specific change key
Alberto Loreti, Rome (IT)
Assigned to Schlage Lock Company LLC, Carmel, IN (US)
Filed by Schlage Lock Company LLC, Carmel, IN (US)
Filed on Dec. 6, 2023, as Appl. No. 18/530,779.
Application 18/530,779 is a continuation of application No. 17/336,706, filed on Jun. 2, 2021, granted, now 11,970,879.
Prior Publication US 2024/0125143 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E05B 27/00 (2006.01)
CPC E05B 27/005 (2013.01) [E05B 27/0017 (2013.01); E05B 27/0039 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A reprogrammable cylinder lock, comprising:
a stator;
a rotor rotatably mounted in the stator and comprising a keyhole configured to receive a key;
a plurality of key followers movable in corresponding seats in the rotor so as to adapt to a key profile;
a plurality of toothed pins carried by the rotor and movable between a first position in which the rotor rotates inside the stator and a second position in which rotation of the rotor is prevented, wherein the key followers and the toothed pins are movable between:
a disengaged position in which the key followers move linearly in the seats with respect to the toothed pins to adapt to a different key profile, the disengaged position associated with a reprogramming configuration of the lock; and
an engaged position with the toothed pins and the key followers coupled to move together along the seats;
a change bar coupled with the key followers and movable to a reprogramming position to disengage the key followers from the toothed pins in the reprogramming configuration of the lock; and
a stop movable between an advanced position in which the change bar is locked so that the key followers and the toothed pins are engaged, and a retracted position in which the change bar is transitioned into the reprogramming position; and
wherein the stop comprises a first magnetic material and is configured to adopt the retracted position in response to approach of a second magnetic material.