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:
Jun. 14, 2005
Filed:
Sep. 12, 2003
David Decker, Arden, NC (US);
Stephen I. Roby, Asheville, NC (US);
David Decker, Arden, NC (US);
Stephen I. Roby, Asheville, NC (US);
BorgWarner, Inc., Auburn Hills, MI (US);
Abstract
A method of making an air boost device, wherein a compressor wheel incorporated therein is re-designed to permit die inserts (), which occupy the air passage and define the blades () during a process of forming a wax pattern () of a compressor wheel, to be pulled without being impeded by the blades. This modified blade design enables the automated production of wax patterns () using simplified tooling. These wax patterns () can be used in a large-scale investment casting process, and produce an economical cast titanium compressor wheel which performs aerodynamically at high boost pressure/RPM.