US 12,133,824 B2
Locking arrangement for patient lift
Olivier Custeau-Boisclair, Sherbrooke (CA); Ilyes Maamri, Sherbrooke (CA); Joël Bossé, Sherbrooke (CA); Mathieu Lussier, Drummondville (CA); and Jocelyn Patry, Sherbrooke (CA)
Assigned to Arjo IP Holding Aktiebolag, Malmö (SE)
Appl. No. 17/763,795
Filed by Arjo IP Holding Aktiebolag, Malmo (SE)
PCT Filed Sep. 14, 2020, PCT No. PCT/EP2020/075618
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/058308, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 1951088-2 (SE), filed on Sep. 26, 2019.
Prior Publication US 2022/0339049 A1, Oct. 27, 2022
Int. Cl. A61G 7/10 (2006.01); F16D 63/00 (2006.01); F16D 121/32 (2012.01); F16D 127/06 (2012.01)
CPC A61G 7/1063 (2013.01) [A61G 7/1042 (2013.01); F16D 63/006 (2013.01); F16D 2121/32 (2013.01); F16D 2127/06 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A locking arrangement for a patient lift configured to selectively lock the vertical movement of a patient support mounting device connected to a lifting device of the patient lift via a load bearing member,
the locking arrangement comprising a shape memory alloy element and a locking device, the shape memory alloy element being connected to the locking device and arranged to selectively actuate said locking device to control a locking force on an engagement member mechanically connected to a motor and the load bearing member of the patient lift, the motor being arranged to raise and lower the patient support mounting device, the locking arrangement being configured to operate in:
an engaged mode wherein the shape memory alloy element is in a first configuration and the locking device is in an engaged position in relation to the engagement member for exerting a locking force on the engagement member thereby preventing vertical movement of the patient support mounting device;
a disengaged mode wherein the shape memory alloy element is in a second configuration actuating the locking device to a disengaged position in relation to the engagement member thereby enabling vertical movement of the patient support mounting device
wherein the shape memory alloy element is arranged to be electrically connected to at least one power source for selectively transitioning between the first and second configuration.