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:
Mar. 26, 1996
Filed:
May. 17, 1994
Applicant:
Inventors:
Terry M Cadle, Wauwatosa, WI (US);
Carl J Landgraf, Waukesha, WI (US);
Georgia M Mayer, Hartford, WI (US);
Assignee:
Zenith Sintered Products, Inc., Germantown, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C / ; F02F / ;
U.S. Cl.
CPC ...
384432 ; 1231 / ; 384279 ; 384434 ;
Abstract
A bearing insert for being cast into an aluminum alloy engine block is made by a ferrous powder metal sintering process to make a skeleton structure which is permeable to the molten aluminum alloy in the block casting process. The insert is made of a material having a similar composition as the bearing cap so as to equalize machining and thermal expansion properties of the cap and block so as to provide improved roundness of the bearing in the machining operations for forming the bearing support and in operation of the engine.