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:
May. 23, 2000
Filed:
Aug. 24, 1998
Gregory A Fett, Fort Wayne, IN (US);
Jeffrey L Colbert, Fort Wayne, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
Two-piece friction welded motor vehicle axle shaft which includes an axle portion which is frictionally welded to a flange portion. The flange portion is preferably fabricated from a relatively high carbon steel material, such as SAE 1050 Mod (Mn 0.80-1.10%), to satisfy the hardness requirement for the bearing race and the axle portion is preferably fabricated from a steel barstock material, such as SAE 1038, SAE 1040 or SAE 8630, having a somewhat lower carbon content to maximize its strength and ductility. The friction weld is preferably positioned inboard of the bearing race and, once welded, the two-piece motor vehicle axle shaft is machined to part profile, heat treated and then machined to final print dimensions.