Patents by Inventor James B. Rishel

James B. Rishel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Monitor and control for a multi-pump system
    Patent number: 4945491
    Abstract: Wire-to-water efficiency (W) of a multi-pump system is monitored and accurately determined according to the formula: ##EQU1## wherein Q is flow through the system, HS is total dynamic head across the inlet and outlet headers of the system, E is energy input to the system to drive the pump, and K is a predetermined conversion factor. The resulting efficiency determination is provided to an operator so that the pump system may be monitored.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: July 31, 1990
    Assignee: Systecon, Inc.
    Inventor: James B. Rishel
  • Monitor and control for a multi-pump system
    Patent number: 4805118
    Abstract: A method and apparatus for monitoring and controlling a multi-pump system is described wherein wire-to-water efficiency (W) is accurately determined according to the formulaW=(Q.times.HS/K.times.E)wherein Q is flow through the system, HS is total dynamic head across the inlet and outlet headers of the system, E is energy input to the system to drive the pump, and K is a predetermined conversion factor. The pumps of the system are selectively energized and deenergized as the efficiency W varies above and/or below efficiency setpoints so as to optimize the efficiency of the pumping system.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: February 14, 1989
    Assignee: Systecon, Inc.
    Inventor: James B. Rishel