Patents Assigned to Laser Applications, Inc.
  • Universal holding and alignment fixture for bellows welding
    Patent number: 6380510
    Abstract: Method and apparatus for welding the inside diameter and the outside diameter of bellows diaphragms for forming a bellows without using chill rings or spacers. This universal welding fixture consists of at least one drive wheel and at least one idler wheel for holding and aligning different size bellows diaphragms. A concentrated heat source such as a laser beam is applied at the edge for joining diaphragms together.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: April 30, 2002
    Assignee: Laser Applications, Inc.
    Inventor: Dale U. Chang
  • Laser cutting and welding of sheet metal using a shield of compressed air
    Patent number: 4905310
    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 gaseous shield 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. Using compressed air, as compared to an inert gas such as helium or argon, as the shield gas produces a significant cost savings at the "price" of some reduction in quality due to oxidation.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: February 27, 1990
    Assignee: Laser Applications, Inc.
    Inventor: Robert R. Ulrich
  • Simultaneously cutting and welding sheet metal using laser energy
    Patent number: 4859826
    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.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: August 22, 1989
    Assignee: Laser Applications, Inc.
    Inventor: Albert J. Hess, III
  • Simultaneously cutting and welding sheet metal using laser energy
    Patent number: 4798931
    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.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: January 17, 1989
    Assignee: Laser Applications, Inc.
    Inventor: Albert J. Hess, III