Patents Assigned to Neles Inc.
  • Ball valve assembly with expandable valve element
    Patent number: 4556197
    Abstract: A ball valve assembly includes a ball valve element having a portion of the material of the ball valve element removed to facilitate expansion of the ball valve element when subjected to heat during use while minimizing the possibility of binding; the ball valve element is installed in a valve housing that is dimensioned between its inlet and outlet relative to the external dimensions of the ball valve element so as to exert a slight degree of compression on the ball element.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: December 3, 1985
    Assignee: Neles Inc.
    Inventors: Peter G. Kindersley, Matti O. Pyysalo