Albert Joseph Hess

US Patent:

48598267, Aug 22, 1989

Filed:

Jun 9, 1988

Appl. No.:

7/204274

Inventors:

Albert J. Hess - Westminster MD

Assignee:

Laser Applications, Inc. - Westminster MD

International Classification:

B23K 2600

US Classification:

21912163

Abstract:

A method of simultaneously cutting and welding metal, especially relatively thin sheets of metal, utilizing laser energy. The invention uses surface tension in the globule created at the site of the impingement of the laser beam on the work to form finished edges on both sides of the line of cut. A laser beam surrounded by a thin shield of inert gas is used, the gas removing some of the molten metal but leaving sufficient to form the beads which comprise the finished edges on both sides of the cut, and also preventing oxidation of the beads.

US Patent:

47989319, Jan 17, 1989

Filed:

Jul 17, 1987

Appl. No.:

7/074864

Inventors:

Albert J. Hess - Westminster MD

Assignee:

Laser Applications, Inc. - Westminster MD

International Classification:

B23K 2600

US Classification:

21912164

Abstract:

A method of simultaneously cutting and welding metal, especially relatively thin sheets of metal, utilizing laser energy. The invention uses surface tension in the globule created at the site of the impingement of the laser beam on the work to form finished edges on both sides of the line of cut. A laser beam surrounded by a thin shield of inert gas is used, the gas removing some of the molten metal but leaving sufficient to form the beads which comprise the finished edges on both sides of the cut, and also preventing oxidation of the beads.