The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2024
Filed:
May. 06, 2022
Ford Global Technologies, Llc, Dearborn, MI (US);
Michael Tekletsion Berhan, Sylvania, OH (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A vehicle includes an electric machine. The electric machine is configured to propel the vehicle. The electric machine has a stator, a rotor, and a labyrinth seal. The stator is secured to a housing. The rotor is secured to a shaft and is configured to transfer rotational power generated by the electric machine to at least one drive wheel via the shaft. The labyrinth seal is disposed between the shaft and the housing. The labyrinth seal comprises inner and outer rings secured to the shaft and housing, respectively. The inner and outer rings have interleaved protrusions defining a tortuous channel extending axially between first and second ends of the labyrinth seal. A conductive grease is disposed within the tortuous channel. The inner ring, outer ring, and conductive grease are configured to direct electrical currents induced in the shaft to the housing.