Patents by Inventor Howard E. Koth

Howard E. Koth 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).

  • Liquid dispensing pump system
    Patent number: 6659728
    Abstract: An internal gear pump including a stepper motor coupled to a drive shaft that is coupled to a rotor and meshed with an idler is disclosed. A controller is linked to the stepper motor. The stepper motor imparts a stepped rotational movement to the drive shaft wherein a single 360° rotation of the drive shaft comprises a plurality of steps. The controller sends a signal to the stepper motor to rotate the drive shaft a predetermined number of steps, based upon an inputted dispense amount. The signal causes the stepper motor to rotate the drive shaft a predetermined number of steps. The controller calculates the predetermined number of steps based upon the inputted dispense amount using an algorithm that is derived experimentally that defines a relationship between dispense amount and the number of steps required for each dispense amount. The algorithm is unique for each fluid to be pumped.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: December 9, 2003
    Assignee: Viking Pump, Inc.
    Inventors: Matthew D. Bush, Howard E. Koth, Michael R. Crawford
  • Liquid dispensing pump system
    Publication number: 20030091442
    Abstract: An internal gear pump including a stepper motor coupled to a drive shaft that is coupled to a rotor and meshed with an idler is disclosed. A controller is linked to the stepper motor. The stepper motor imparts a stepped rotational movement to the drive shaft wherein a single 360° rotation of the drive shaft comprises a plurality of steps. The controller sends a signal to the stepper motor to rotate the drive shaft a predetermined number of steps, based upon an inputted dispense amount. The signal causes the stepper motor to rotate the drive shaft a predetermined number of steps. The controller calculates the predetermined number of steps based upon the inputted dispense amount using an algorithm that is derived experimentally that defines a relationship between dispense amount and the number of steps required for each dispense amount. The algorithm is unique for each fluid to be pumped.
    Type: Application
    Filed: November 9, 2001
    Publication date: May 15, 2003
    Inventors: Matthew D. Bush, Howard E. Koth, Michael R. Crawford