US 12,313,120 B2
Magnetic bearing device and positioning system
Alexander Goos, Ettlingen (DE); and Daniel Geissler, Baden-Baden (DE)
Assigned to PHYSIK INSTRUMENTE (PI) SE & CO. KG, (DE)
Appl. No. 18/025,543
Filed by PHYSIK INSTRUMENTE (PI) SE & CO. KG, Karlsruhe (DE)
PCT Filed Sep. 8, 2021, PCT No. PCT/EP2021/074649
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/053480, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 10 2020 123 634.4 (DE), filed on Sep. 10, 2020.
Prior Publication US 2023/0323915 A1, Oct. 12, 2023
Int. Cl. F16C 32/04 (2006.01); H02K 7/09 (2006.01); H02K 41/03 (2006.01)
CPC F16C 32/0465 (2013.01) [F16C 32/0472 (2013.01); H02K 7/09 (2013.01); H02K 41/031 (2013.01); H02K 2201/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic bearing device comprising:
a stator and a moving member which are formed from at least one coil device with at least one coil body, magnets, and/or flux guide members,
said moving member being movable relative to said stator along a direction of motion, and
said stator and said moving member are configured such that a magnetic force is exerted upon said moving member when electrical energy is applied to said coil device in order to form an air gap between said stator and said moving member,
wherein said coil device is arranged exclusively in said stator and the extension of said moving member in said direction of motion is smaller than the extension of said stator in said direction of motion direction, and
the extension of said stator corresponds to a total length of said at least one coil body.