Patents Represented by Attorney, Agent or Law Firm Kathleen R. Carey
  • Coatings for use in fuel system components
    Patent number: 6802457
    Abstract: A coating for fuel system components, including components of fuel injectors, adapted for use with low lubricity fuels is disclosed. The invention consists of a metal carbon material coating or a metal nitride coating to the fuel pump plunger or other fuel injection system components. The invention utilizes a coating on the fuel injector plunger that minimizes scuffing or seizure associated with the plunger and barrel.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: October 12, 2004
    Assignee: Caterpillar Inc
    Inventors: Robert M. Campion, Chuong Q. Dam, Kenneth W. Hall, William J. Rodier
  • Method for forming a rare earth silicate coating on a silicon based ceramic component by controlled oxidation for improved corrosion resistance
    Patent number: 6562409
    Abstract: A low cost process for self-forming a uniformly adherent protective rare earth silicate coating on a silicon-based ceramic component for protecting the component against corrosive/erosive environments. The coating is self-formed by an oxidation process of a silicon-based ceramic associated with a reaction between a silica (SiO2) film layer on the surface of silicon-based ceramic and the rare earth oxide existing inside of silicon-based ceramic component.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: May 13, 2003
    Assignee: Caterpillar Inc
    Inventors: Kent A. Koshkarian, Seung K. Lee, Michael J. Readey
  • Method for creating surface oil reservoirs on coated iron
    Patent number: 6478933
    Abstract: A process for increasing the lubrication of ductile-iron lubricated contacts includes abrasive-blasting and plasma etching a ductile-iron component prior to coating. A wear resistant or low friction coating is then formed on the iron substrate and the resulting coated component has greater lubrication than a corresponding non-blasted and non-coated component.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 12, 2002
    Assignee: Caterpillar Inc.
    Inventors: Chuong Q. Dam, Robert E. Hawbaker
  • Modified boron containing coating for improved wear and pitting resistance
    Patent number: 6432480
    Abstract: The invention consists of a coated metallic component which exhibits improved wear and pitting resistance, and a method for making the invention. A metallic component is coated with a functionally gradient material utilizing both a non-oxide containing coating and boron oxide coating. This invention is useful for rolling and sliding contacts.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: August 13, 2002
    Assignee: Caterpillar Inc.
    Inventors: Ajayi O. Oyelayo, Michael H. Haselkorn