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:
Sep. 08, 1981
Filed:
Feb. 28, 1980
Applicant:
Inventor:
Aldo V La Rocca, Moncalieri, IT;
Assignee:
Fiat Auto S.p.A., Turin, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 219 1047 ; 2191 / ; 2191 / ;
Abstract
A laser microdrilling method uses a power laser beam the action of which causes solid workpiece metal to be transformed into both liquid and vapor phases. In order to improve the surface finish and dimensional accuracy of a hole formed, the workpiece is heated to a temperature sufficient to cause both the liquid phase formed directly by the action of the laser beam and the liquid phase caused by the condensation of the vapor phase on the wall of the hole being formed, to be maintained in the liquid state for a period of time long enough to permit the uniform spreading of these liquid phases over the wall of the hole.