Patents Assigned to Valve Concepts, Inc.
  • Check valve with a low inertia moving part for low or high pressure differentials
    Patent number: 5975130
    Abstract: A check valve having an elongated body with bore therethrough, the bore having a small diameter section abutting a downstream frustoconical section with an increasing diameter, a ball positioned downstream of the small diameter section and movable in the frustoconical section and a pin blocking the bore to keep the ball at or near the frustoconical section and near to the small section, such that a reversal in fluid flow will seat the ball within the frustoconical section and block the bore.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: November 2, 1999
    Assignee: Valve Concepts, Inc.
    Inventors: J. Yen Ligh, Juan A. Giscard