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. 30, 2007
Filed:
Jul. 28, 2004
David M. Decker, Arden, NC (US);
David M. Decker, Arden, NC (US);
B{dot over (o)}rgWarner, Inc., Auburn Hills, MI (US);
Abstract
Titanium aluminide (TiAl) rotor shaft assembly () of a type used in a turbocharger has a TiAl rotor () with an axially protruded portion () that is fixedly joined to a recessed portion () of a metal shaft () by the synergistic combination of an interference fit, such as a heat shrinkage fit, further supported by a brazed joint () in which a thin layer of a brazing material () is interposed between the surface of the protruded portion () and the recessed surface (). Optionally, one or both of the jointed surfaces have braze channels () to facilitate braze flow within the joint. Methods for producing the rotor shaft assembly () and a turbocharger having the rotor shaft assembly () are provided.