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:
Jun. 07, 2005
Filed:
Feb. 13, 2002
John Robert Smith, Birmingham, MI (US);
David Rudolph Sigler, Shelby Township, MI (US);
Richard Earl Teets, Bloomfield Hills, MI (US);
Larry Edward Byrnes, Rochester Hills, MI (US);
Martin Stephen Kramer, Clarkston, MI (US);
John Robert Smith, Birmingham, MI (US);
David Rudolph Sigler, Shelby Township, MI (US);
Richard Earl Teets, Bloomfield Hills, MI (US);
Larry Edward Byrnes, Rochester Hills, MI (US);
Martin Stephen Kramer, Clarkston, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
The cylinder walls of light metal engine blocks are thermally spray coated with a ferrous-based coating including aluminum using an HVOF device. A ferrous-based wire is fed to the HVOF device to locate a tip end of the wire in a high temperature zone of the device. Jet flows of oxygen and gaseous fuel are fed to the high temperature zone and are combusted to generate heat to melt the tip end. The oxygen is oversupplied in relation to the gaseous fuel. The excess oxygen reacts with and burns a fraction of the ferrous-based feed wire in an exothermic reaction to generate substantial supplemental heat to the HVOF device. The molten/combusted metal is sprayed by the device onto the walls of the cylinder by the jet flow of gases.