Patents Assigned to Chappell Industries, Inc.
  • Adjustable choke
    Patent number: 4047695
    Abstract: A low pressure drop adjustable choke has a variably adjustable tapered annular port for metering flow of a fluid. The annular port is defined by a tapered plug extending through a mating, correspondingly tapered seat. The area of the port is selectively varied by axial movement of the plug relative to the seat. The device is mechanically adjustable to a selected flow rate, which may be indicated on a precision indicator.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: September 13, 1977
    Assignee: Chappell Industries, Inc.
    Inventors: John T. Cleveland, Walter L. Chappell, John D. Watts