US 12,359,464 B2
Electromechanical lock and method
Mika Piirainen, Oulu (FI); and Väinö Tikkanen, Oulu (FI)
Assigned to Iloq Oy, Oulu (FI)
Filed by iLOQ OY, Oulu (FI)
Filed on Jul. 11, 2022, as Appl. No. 17/861,315.
Application 17/861,315 is a continuation in part of application No. 17/205,195, filed on Mar. 18, 2021, granted, now 11,414,887.
Application 17/205,195 is a continuation of application No. PCT/EP2020/082541, filed on Nov. 18, 2020.
Claims priority of application No. 19210367 (EP), filed on Nov. 20, 2019.
Prior Publication US 2022/0341218 A1, Oct. 27, 2022
Int. Cl. E05B 47/00 (2006.01); H01F 7/02 (2006.01); H01F 7/06 (2006.01); H01F 7/20 (2006.01)
CPC E05B 47/0004 (2013.01) [E05B 47/0038 (2013.01); H01F 7/021 (2013.01); H01F 7/064 (2013.01); H01F 7/20 (2013.01); E05B 2047/0016 (2013.01); E05B 2047/0036 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An electromechanical lock comprising:
at least one movable permanent hard magnet configured to move between first and second positions;
at least one stationary permanent semi-hard magnet; and
at least one electrically powered magnetization coil positioned to surround the stationary permanent semi-hard magnet and configured to switch a polarity of the at least one stationary permanent semi-hard magnet between first and second magnetization configurations, wherein the first magnetization configuration of the at least one stationary permanent semi-hard magnet is provided to at least move the at least one movable permanent magnet to the first position, and the second magnetization configuration of the at least one stationary permanent semi-hard magnet is provided to at least move the at least one movable permanent magnet to the second position;
wherein the at least one stationary permanent semi-hard magnet has a tubular shape, and the at least one movable permanent magnet is placed inside a hollow in a pin, wherein a part of the pin containing the at least one movable permanent magnet is clearance fitted and positioned to move in the tubular shape of the at least one stationary permanent semi-hard magnet, and
wherein the at least one movable permanent hard magnet and the at least one stationary permanent semi-hard magnet have respective coercivities that are different from one another.