Patents Assigned to Brico Engineering Company Limited
  • Valve guide
    Patent number: 5041168
    Abstract: A valve guide and a method for the manufacture thereof are described. The valve guide is a tubular article having a length to outer diameter ratio greater than about 1.5 and is made of a ferrous material by a PM route. The pressed guide is infiltrated by preparing a sheet of the infiltrant alloy, rolling the sheet into a cylinder and inserting it into the guide bore followed preferably by, simultaneous sintering and infiltration.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: August 20, 1991
    Assignee: Brico Engineering Company Limited
    Inventors: Charles G. Purnell, Andrew R. Baker