US 12,129,892 B2
Bearing bush for a rotating shaft, bearing shield, electric motor and method for manufacturing a damping element
Carsten Schuh, Baldham (DE); Thomas Soller, Bayern (DE); and Rolf Vollmer, Gersfeld (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Filed by Siemens Aktiengesellschaft, Munich (DE)
Filed on Feb. 25, 2022, as Appl. No. 17/681,335.
Claims priority of application No. 21159605 (EP), filed on Feb. 26, 2021.
Prior Publication US 2022/0275830 A1, Sep. 1, 2022
Int. Cl. F16C 33/20 (2006.01); B22F 10/10 (2021.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); F16C 17/02 (2006.01); F16F 7/00 (2006.01); H02K 5/14 (2006.01)
CPC F16C 33/208 (2013.01) [B22F 10/10 (2021.01); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12); F16C 17/02 (2013.01); F16F 7/00 (2013.01); H02K 5/14 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bearing bush for a rotating shaft, the bearing bush comprising:
a plurality of layers stacked along a longitudinal axis of the bearing bush, wherein each layer has a thickness along the longitudinal axis between 10 μm and 200 μm;
wherein the individual layers are connected to adjacent layers with a material bond, forming a wall with a wall thickness less than 10% of a diameter of the bearing bush measured transverse to the longitudinal axis; and
the wall includes closed cavities filled with a powder.
 
10. An electric motor comprising:
a rotor;
a stator; and
a bearing shield with a bearing brush comprising:
a plurality of layers stacked along a longitudinal axis of the bearing brush, wherein each layer has a thickness along the longitudinal axis between 10 μm and 200 μm;
wherein the individual layers are connected to adjacent layers with a material bond, forming a wall with a wall thickness less than 10% of a diameter of the bearing bush measured transverse to the longitudinal axis; and
the wall includes closed cavities filled with a powder.