Patents Assigned to The Gray Engineering Group Inc.
  • Apparatus for the submerged introduction of a fluid into a body of liquid
    Patent number: 4569805
    Abstract: A fluid supply pipe has uniformly spaced diffuser location holes arranged in a line along its length at each of which a saddle is secured to the pipe which includes changeable means for controlling the desired flowrate of fluid from the pipe to a diffuser. The saddle has a threaded connection with the diffuser so that the diffuser can be readily screwed onto or unscrewed from the saddle by hand. The plenum below the diffuser element has a self-draining feature.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: February 11, 1986
    Assignee: The Gray Engineering Group Inc.
    Inventors: Ross G. Hume, James K. Leitch