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:
Jan. 06, 1981
Filed:
Jun. 26, 1978
Michael Earle, Mapleton, IL (US);
Glenn H Lenzen, Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
An apparatus for fusibly bonding a powder coating material to a metal article includes a holding device for releasably supporting the article, a depositing device for controllably placing the powder coating material in a band onto a surface of the article, and a laser beam for controllably liquifying a portion of the band of powder and juxtaposed surface while minimizing heat transmission into the article and allowing rapid hardening of the portion of the band after removal of the laser beam to provide a surface layer having properties based substantially solely on the coating material and a relatively thin, strong region of interstitial bond between the surface layer and the article having properties based upon both the coating material and the article. An exemplary engine valve with a relatively fine metallurgical surface structure for increased hardness is disclosed.