Patent ID: 9300191
Filing Date: 2016-03-29
CPC Classification: G01P,H02K

Claim Text:
1. An electric motor comprising: a stator core; a first bracket fixed to a first side of the stator core in an axial direction; a first bearing housing fixed to the first bracket, wherein the first bearing housing holds a bearing; a second bracket fixed to a second side of the stator core in the axial direction; a second bearing housing fixed to the second bracket, wherein the second bearing housing holds a bearing; a rotor comprising: a ventilation fan attached to the rotor shaft between the rotor core and the first bearing housing; a ventilation flue formed between the first bearing housing and the first bracket, wherein the ventilation flue is configured to draw open air from one or more inspiratory ports to a peripheral part of the first bracket; and a rotation detection circuit comprising: