Patents Represented by Attorney, Agent or Law Firm Liza B Myers
  • Ring band for a piston
    Patent number: 6675761
    Abstract: A piston includes a ring groove. The ring groove has a top face and a bottom face, and one of the top face and the bottom face is composed of a first material having a preestablished rate of thermal conductivity, the other of the top face and bottom face is composed of a second material having a preestablished rate of thermal conductivity being less than the rate of thermal conductivity of the first material.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: January 13, 2004
    Assignee: Caterpillar Inc
    Inventor: John A. Grassi