US 11,852,055 B2
Actuator with open-loop control direct drive
Antoine Foucaut, Montarlot lès Rioz (FR); Pierre Gemberlé, Biel/Bienn (CH); and Antoine Bourgade, Biel/Bienne (CH)
Assigned to MMT AG, Zug (CH)
Appl. No. 16/955,559
Filed by MMT AG, Zug (CH)
PCT Filed Dec. 21, 2018, PCT No. PCT/EP2018/086501
§ 371(c)(1), (2) Date Jun. 18, 2020,
PCT Pub. No. WO2019/122299, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 1762829 (FR), filed on Dec. 21, 2017.
Prior Publication US 2020/0318505 A1, Oct. 8, 2020
Int. Cl. F01L 9/22 (2021.01); F01L 1/047 (2006.01); H02K 7/075 (2006.01); H02K 7/12 (2006.01); F01L 9/20 (2021.01); F01L 9/21 (2021.01)
CPC F01L 9/22 (2021.01) [F01L 1/047 (2013.01); F01L 9/20 (2021.01); H02K 7/075 (2013.01); H02K 7/12 (2013.01); F01L 2009/213 (2021.01); F01L 2009/2107 (2021.01); F01L 2009/2169 (2021.01); F01L 2009/25 (2021.01); F01L 2820/032 (2013.01); F01L 2820/041 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A brushless rotary actuator comprising:
two stops;
a wound stator;
a magnetic cylindrical rotor;
a shaft rigidly attached to the rotor, the shaft having a first end and a second end;
a control member rigidly attached to the first end of the shaft, wherein the control member has a resilient beam configured to damp movement when the rotor reaches an end of travel position; and
a travel limiter rigidly attached to the second end of the shaft, wherein the travel limiter has one or more resilient beams configured to elastically bend when the travel limiter comes into contact with the two stops;
wherein the actuator is configured to be electrically controlled in an open-loop.