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:
Jul. 31, 2001
Filed:
Nov. 04, 1999
Brian L. Bank, Hartland, MI (US);
James R. Toth, Ann Arbor, MI (US);
Federal-Mogul World Wide, Inc., Southfield, MI (US);
Abstract
A multilayer engine bearing (,) includes a steel backing (,) having a liner (,) of bearing metal of either copper-lead or aluminum alloys formed on the backing (,) to define a base lining member (,) of the bearing (,). A multilayer overplate (,) is formed on the base lining member (,) and includes multiple lead-free soft layers (,) separated by lead-free hard layers (,). The relative thicknesses of the overplate layers may be controlled to provide a macro hardness gradient across the thickness of the overplate (,) such that, for example, the overplate (,) may be softer near its top region (,) as compared to its bottom region (,).