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:
Dec. 08, 1981
Filed:
Oct. 05, 1978
Applicant:
Inventor:
Richard J Saunders, San Jose, CA (US);
Assignee:
Coherent, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 2191 / ; 2191 / ; 2191 / ;
Abstract
A method and apparatus are disclosed utilizing a laser for heat treating a transformation hardenable workpiece. Sufficiently high laser power densities are provided at the workpiece surface to cause an incandescent reaction with the workpiece, but incandescent reaction is limited to a sufficiently short period of time to prevent any substantial melting of the workpiece. Pre-conditioning the workpiece prior to heat treatment, squelching the workpiece with a gaseous jet, and techniques for work-hardening cylindrical workpieces are also disclosed.