US 11,732,505 B2
Lock drive assemblies
Sundar Raj Dore Vasudevan, Bangalore (IN); Dilip Bangaru, Bangalore (IN); and Adam M. Litwinski, Centennial, CO (US)
Assigned to Schlage Lock Company LLC, Carmel, IN (US)
Filed by Schlage Lock Company LLC, Carmel, IN (US)
Filed on Nov. 16, 2021, as Appl. No. 17/527,834.
Application 17/527,834 is a division of application No. 15/854,048, filed on Dec. 26, 2017, granted, now 11,174,659.
Application 15/854,048 is a division of application No. 14/476,159, filed on Sep. 3, 2014, granted, now 9,850,685, issued on Dec. 26, 2017.
Prior Publication US 2022/0325558 A1, Oct. 13, 2022
Int. Cl. E05B 47/00 (2006.01); E05B 15/04 (2006.01); E05B 47/06 (2006.01)
CPC E05B 47/0012 (2013.01) [E05B 47/0673 (2013.01); E05B 2015/0406 (2013.01); E05B 2047/0023 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system, comprising:
a casing defining a longitudinal direction and a lateral direction;
a hub rotatably mounted in the casing;
a catch mounted in the casing, the catch movable in the lateral direction between an unlocking position in which the catch is disengaged from the hub, and a locking position in which the catch is engaged with the hub, wherein the catch substantially prevents rotation of the hub when in the locking position;
a longitudinally slidable link engaged with the catch via a cam interface configured to laterally move the catch in response to longitudinal movement of the link;
a shaft including a worm, the shaft extending in the longitudinal direction;
a motor operable to rotate the shaft;
a driver engaged with the worm, wherein engagement between the driver and the worm is configured to longitudinally move the driver in response to rotation of the shaft, and wherein the driver includes a flat that prevents rotation of the driver relative to the casing; and
a spring comprising a spring first end coupled with the driver such that the driver prevents rotation of the spring first end relative to the casing, and a spring second end connected to the link, wherein the spring is not directly engaged with the worm.