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:
Apr. 09, 2002
Filed:
Jan. 28, 2000
Applicant:
Inventors:
Udo Schlegel, Vechelde, DE;
Reinhard Vogelsang, Salzgitter, DE;
Assignee:
Volkswagen AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 5/384 ;
U.S. Cl.
CPC ...
B21D 5/384 ;
Abstract
In the method described in the specification, the large eye of a connecting rod is microporously plasma-coated with an aluminum bronze. After plasma coating the connecting-rod eye is opened by breaking or cutting to remove the bearing cap, which breaks the plasma layer. The cap is then remounted the bearing surface is produced by fine spindle trimming. To improve the oil retention volume the bearing layer has an annular groove. The aluminum bronze bearing layer is especially firmly bonded to the connecting rod material by multiple sandblasting treatment of the surface to be coated, using sand particles of successively increasing particle size.