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. 21, 2025
Filed:
Jun. 06, 2023
Ford Global Technologies, Llc, Dearborn, MI (US);
Akash Changarankumarath Pradeepkumar, Westland, MI (US);
Singar Rathnam, Farmington Hills, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An electric machine includes a stator core having an outer circumferential surface, an inner circumferential surface, and longitudinal slots recessed into the inner circumferential surface. Each of the slots has first and second radial walls, an outboard circumferential wall extending between the radial walls, an entrance portion having opposing first and second angled walls extending divergently away from the inner circumferential surface, a first shoulder connecting the first radial wall to the first angled wall, and a second shoulder connecting the second radial wall to the second angled wall. Windings are disposed in the slots. Slot liners are also disposed in the slots such that the windings are disposed in an interior of the slot liners. At least one of the slot liners has first and second flaps angled towards each other from opposing sidewalls of the slot liner, wherein the first and second flaps cooperate to define an inner varnish dam, and the first flap, the second flap, and the corresponding one of the slots cooperate to define an outer varnish dam.