Patents Examined by John A. Rivell, Jr.
  • Steam throttle valve
    Patent number: 4366833
    Abstract: The steam throttle valve has water injection ducts disposed about the valve axis. The ducts are situated between two abutting flanges of a valve cage and a valve spindle guide. The ducts are in the form of grooves in the flange while the adjacent peripheral surface of the flange is plain. The valve cage forms a replaceable wearing component and the configuration of the water injection ducts avoids thermal stress cracks in the duct zone.
    Type: Grant
    Filed: June 10, 1980
    Date of Patent: January 4, 1983
    Assignee: Sulzer Brothers Limited
    Inventor: Karlheinz Grotloh