Patents Examined by Dean R.
  • Graphite brazing fixture coated with composite layers of titanium carbide and titanium nitride
    Patent number: 4892788
    Abstract: A brazing fixture for use in the electronics industry which resists adherence of brazing compounds and insulative materials during the brazing operation and a method for making and using the same. The fixture is characterized in that it is made from a graphite substrate coated with a composite layer of titanium carbide and titanium nitride.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: January 9, 1990
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael B. Miller, Robert D. Bertin
  • Aluminum-lithium alloys having improved corrosion resistance and method
    Patent number: 4797165
    Abstract: An aluminum base alloy wrought product having improved corrosion resistance in addition to combinations of strength and toughness. The product comprises 2.2 to 3.0 wt. % Li, 0.4 to 2.0 wt. % Mg, 0.2 to 1.6 wt. % Cu, 0 to 2.0 wt. % Mn, 0.5 wt. % max. Fe, 0.5 wt. % max. Si, the balance aluminum and incidental impurities and has the ability to develop improved combinations of strength and toughness in response to an aging treatment. Prior to an aging step, the product having imparted thereto a working effect equivalent to stretching so that after an aging step it has improved combinations of strength and toughness.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: January 10, 1989
    Assignee: Aluminum Company of America
    Inventors: Philip E. Bretz, Ralph R. Sawtell, Warren H. Hunt, Jr.
  • Full length forging method for producing large section, large mass cylindrical sleeves of alloy 625
    Patent number: 4781768
    Abstract: A process for producing large section, large mass cylindrical sleeves of alloy 625 by employing full length saddle forging techniques comprising forming the workpiece into a full length member, saddle forging the workpiece, air cooling the forging to room temperature following saddle forging, thermal treating and annealing the forging and finish machining the forging to form the finished large section, large mass cylindrical sleeve of alloy 625.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: November 1, 1988
    Assignee: National Forge Company
    Inventor: Ashok K. Khare
  • High temperature protective coating alloy
    Patent number: 4500489
    Abstract: The invention refers to a high temperature protective coating which is formed by an alloy of chromium, silicon, boron, iron and nickel. According to the invention, a light metal is mixed into the alloy as an additive. The additive consists preferably of aluminum. In addition, the silicon content of the high temperature protective coating is limited to 1.1 to 3.5 percent in weight relative to the total weight of the alloy.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: February 19, 1985
    Assignee: BBC Aktiengesellschaft Brown, Boveri & Cie
    Inventor: Andrew R. Nicoll
  • Copper base alloy containing manganese
    Patent number: 4242133
    Abstract: A copper base alloy having improved stress relaxation resistance consisting essentially of: about 15.0 to 31% zinc; about 1.0 to 5.0% aluminum; about 1.1 to 8% manganese; and the balance copper.
    Type: Grant
    Filed: September 11, 1979
    Date of Patent: December 30, 1980
    Assignee: Olin Corporation
    Inventors: Eugene Shapiro, John M. Vitek, Warren F. Smith, Jr.