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:
Aug. 22, 2000
Filed:
Mar. 04, 1999
John Cooper, Herts, GB;
Lucas Industries, London, GB;
Abstract
A variable speed rotary electric machine comprises a stator having windings and a rotor having windings mounted within the stator for rotation about an axis; a cooling fluid inlet into a first end region of the rotor; at least one first fluid duct having an inlet orifice in the first end region of the rotor and an outlet orifice arranged to discharge fluid onto a first region of the stator windings; and at least one second fluid duct having an inlet orifice in an opposite end region of the rotor and an outlet orifice arranged to discharge fluid onto a second region of the stator windings. A flow path extends through the rotor from the first end region to the opposite end region, the rotor windings being in the flow path. The machine also comprises at least one third fluid duct having an inlet orifice in said opposite end region of the rotor and an outlet orifice. The at least one third duct has a greater flow capacity than the at least one second duct and the inlet orifice of the third duct is located closer to the axis of the rotor than the inlet orifice of the second duct.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile