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. 06, 2001
Filed:
Sep. 17, 1999
Rajeev Vyas, Rochester Hills, MI (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
A rotor (,) for an electric machine (,) includes a first elongated rotor segment (,) having a plurality of axially extending rotor poles (,) arranged in a circular array about a central axis (,) that extends longitudinally through the first rotor segment(,). A second axially extending rotor segment (,) engages and is fixed relative to the first rotor segment (,). The second rotor segment (,) has a plurality of axially extending rotor poles (,) arranged in a circular array about the central axis (,). The poles (,) of the second rotor segment (,) are rotated in a first direction about the central axis relative to the poles (,) of the first rotor segment (,). Preferably the rotor (,) also includes a third axially extending rotor segment (,) that engages and is fixed relative to at least one of the first and second rotor segments (,). The third rotor segment (,) also has a plurality of axially extending rotor poles (,) arranged in a circular array about the central axis (,). The poles (,) of the third rotor segment (,) are rotated about the central axis (,) relative to the poles (,) of each of the first and second rotor segments (,).