Patents by Inventor Wilhelmus T. L. Bisseling

Wilhelmus T. L. Bisseling 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).

  • Electronic digitized proportional-integral controller
    Patent number: 4733144
    Abstract: A digital proportional-integral controller for controlling the speed of a d.c. electric motor in a copying machine and synchronizing it with the speed of another motor in the copying machine. The proportional stage and the integral stage of the controller are each formed by an up/down counter which counts up or down depending upon the pulses of the actual speed signal and the reference signal. Logic circuits are provided for processing the speed signal pulses and the reference signal pulses before they are fed to the up/down counters. The controller also has an interface for a two-wire bus system over which data and commands for adjusting and varying the control parameters can be input.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: March 22, 1988
    Assignee: Oce-Nederland B.V.
    Inventor: Wilhelmus T. L. Bisseling
  • Electronic digitized proportional-integral controller
    Patent number: RE33500
    Abstract: A digital proportional-integral controller for controlling the speed of a d.c. electric motor in a copying machine and synchronizing it with the speed of another motor in the copying machine. The proportional stage and the integral stage of the controller are each formed by an up/down counter which counts up or down depending upon the pulses of the actual speed signal and the reference signal. Logic circuits are provided for processing the speed signal pulses and the reference signal pulses before they are fed to the up/down counters. The controller also has an interface for a two-wire bus system over which data and commands for adjusting and varying the control parameters can be input.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: December 18, 1990
    Assignee: Oce-Nederland B.V.
    Inventor: Wilhelmus T. L. Bisseling