US 11,940,010 B2
Bearing apparatus and spacer
Shohei Hashizume, Kuwana (JP)
Assigned to NTN Corporation, Osaka (JP)
Appl. No. 17/761,380
Filed by NTN Corporation, Osaka (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033517
§ 371(c)(1), (2) Date Mar. 17, 2022,
PCT Pub. No. WO2021/059919, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-175887 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0373036 A1, Nov. 24, 2022
Int. Cl. F16C 19/52 (2006.01); F16C 19/54 (2006.01); F16C 35/04 (2006.01); F16C 41/00 (2006.01); G01M 13/04 (2019.01)
CPC F16C 41/004 (2013.01) [F16C 19/525 (2013.01); F16C 19/548 (2013.01); F16C 35/042 (2013.01); F16C 41/007 (2013.01); G01M 13/04 (2013.01); F16C 2322/39 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A bearing apparatus that supports a rotating body with a bearing, the bearing including an inner ring, an outer ring, and a rolling element, the bearing apparatus comprising:
a power generator including a Peltier element variable in amount of power generation depending on a temperature difference between the inner ring and the outer ring caused in the bearing; and
an abnormality sensing apparatus that senses abnormality of the bearing based on the amount of power generation by the power generator.