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:
Mar. 15, 2016
Filed:
Aug. 16, 2011
Tim Woolmer, Oxford, GB;
Chris Gardner, Reading, GB;
Jon Barker, Oxford, GB;
YASA MOTORS LIMITED, Oxfordshire, GB;
Abstract
An electric machine () comprises a rotor () having permanent magnets () and a stator () having coils () wound on stator bars () for interaction with the magnets across an air gap () defined between them. The bars () and coils () are enclosed by an annular stator housing () that extends between the air gap. A chamber () is defined that incorporates cooling medium to cool the coils. The stator housing comprises two mating clamshells () that mount the stator bars and coils in the machine. Each clamshell is molded from reinforced plastics and interconnected (optionally through one or more intermediate components). At least one clamshell has over-molded therein stator bar shoes that form part of said radial wall, and optionally one or more of the following components: cylindrical boss supports extending along the cylindrical outer wall part; connection studs that communicate electrically the chamber externally; stator coils; coolant inlet and outlet ports; and an outer race of a rotor bearing.