Patents Assigned to Liquid Logic, LLC
  • Patent number: 6689621
    Abstract: An apparatus for the control of fluid flow through a valve. A single shaft-mounted cam moves translationally along the length of the shaft, stopping sequentially at positions adjacent to and in operative engagement with an actuator disposed on or near a valve body. Once in position with a predetermined valve, the cam, which is also coupled to a rotational member, is rotated, thus causing an eccentric portion of the cam to engage the actuator in such a way so as to force the valve to open or close. A flow detection system is integrated into a main fluid transport conduit, allowing sensed flow variations to be sent to a controller. The controller uses a comparison algorithm to determine what fluid settings in the valve are necessary to effect a desired fluid flow through the valve, and prepares an input signal to be sent to one or more motors controlling the translational and rotational motion of the cam.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: February 10, 2004
    Assignee: Liquid Logic, LLC
    Inventors: C. William Merten, Thomas M. O'Brien