Patents by Inventor Richard A. Strissel

Richard A. Strissel 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).

  • Patent number: 4282583
    Abstract: A self-diagnostic printer controller circuit and system may be fabricated in an inexpensive and flexible manner by functionally dividing the tasks of the printer system into separate modules which are intercommunicated through a plurality of buses on a mother board. One of the modules is a central processing unit particularly adapted to performing the required operations in a printer system. The printer system may contain a plurality of additional options, one of which is an internal vertical format unit in which paper instructions may be stored and selectively retrieved by the central processor unit to be used as data to direct the operation of the other modules according to the selected format. The printer has a stepper motor for vertically advancing a printing medium being printed and the VFU includes a format memory for storing information establishing the desired format for printing onto the medium.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: August 4, 1981
    Assignee: Dataproducts Corporation
    Inventors: Sultan W. Khan, John K. Ham, Richard A. Strissel
  • Patent number: 4179732
    Abstract: A self-diagnostic printer system divides tasks of the printer system into separate modules using a plurality of buses on a mother board. A central processing unit module performs the required operations in the system. An interface module interfaces the central processing module with a digital system user, a tape input, and an operator through a control panel. A timing and status module monitors a plurality of printer device fault conditions, generates a plurality of enable signals and drive signals and interfaces timing signals from a printer to the central processor unit. A power module generates driving currents for a clamping solenoid and a stepper motor so as to move the paper through the printer. A hammer driver module selectively fires hammer driver circuits to generate hard copy printout of digital information. An internal vertical format unit in which paper instructions are stored and selectively retrieved is used to direct the operation of the other modules according to a selected format.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: December 18, 1979
    Assignee: DataProducts Corporation
    Inventors: Sultan W. Khan, John K. Ham, Richard A. Strissel