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:
Jul. 23, 2002
Filed:
Oct. 12, 2000
Applicant:
Inventor:
Bernhard P. Piwczyk, Dunbarton, NH (US);
Assignee:
ASE Americas, Inc., Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 2/638 ; B23K 2/614 ;
U.S. Cl.
CPC ...
B23K 2/638 ; B23K 2/614 ;
Abstract
An improved method and apparatus for laser cutting a thin fragile material using a high velocity assist gas to remove molten material and laser-generated debris is characterized by the high velocity assist gas exerting substantially zero force on the material being cut. An improved form of gas assist laser gas assist nozzle is shaped to achieve a supersonic gas flow velocity that is used advantageously to effect rapid removal of ejected gas and other materials.