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. 07, 2003
Filed:
Aug. 16, 2001
Applicant:
Inventors:
Gary L. Anderson, St. Marys, PA (US);
William J. Olson, St. Marys, PA (US);
Assignee:
Keystone Investment Corporation, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/16 ; B22F 3/24 ;
U.S. Cl.
CPC ...
B22F 3/16 ; B22F 3/24 ;
Abstract
A method of producing a gear from a metallurgical powder includes molding at least a portion of the powder to provide a gear preform. The gear preform is sintered and hot formed, and subsequently may be carburized. The gear preform is resintered and cooled at a cooling rate suitable to provide a bainitic microstructure in at least a surface region of the preform. The gear teeth of the preform may be shaved to, for example, adjust dimensions, and enhance dimensional uniformity.