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:
Sep. 12, 2023
Filed:
Nov. 20, 2020
Rolls-royce Plc, London, GB;
Vladimir A. Shirokov, Derby, GB;
ROLLS-ROYCE plc, London, GB;
Abstract
The disclosure relates to winding arrangements for electrical machine stators. Example embodiments include a coil for a tooth element of an electrical machine stator, the coil formed from a plurality of hairpin wires having pairs of legs passing through first and second slots on opposing radial faces of the tooth element, the coil having n full turns passing around the tooth element, the first and second slots each having 2n+2 slot positions having a depth d' for accommodating a single hairpin wire, the slots each having a first slot position at a first common end and a 2n+2slot position at a second opposing end, the coil having first and second terminal connections connected to hairpin wires extending through the first and second slots at respective first and second slot positions.