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. 20, 2015
Filed:
Dec. 18, 2009
Yuefeng Luo, Ann Arbor, MI (US);
Yuefeng Luo, Ann Arbor, MI (US);
Federal-Mogul World Wide, Inc., Southfield, MI (US);
Abstract
A method for making a gasket () for an internal combustion engine () includes forming a generally annual stopper () on a metallic gasket body () through the process of electrochemical deposition. An electrolytic cell is completed with the gasket body () forming a cathode. The stopper () is formed with a contoured compression surface () by selectively varying the electrical energy delivered to selected electrodes () over time. Electrolyte () rich with metallic ions is pumped at high speed through the inter-electrode gap. A PC controller () switches selected electrodes () ON at certain times, for certain durations, which cause metallic ions in the electrolyte () to reduce or deposit onto the gasket body (), which are built in columns or layers into a three-dimensional formation approximating the target surface profile () for the compression surface (). The subject method for building a three-dimensional formation can be applied to work parts other than cylinder head gaskets ().