Patents by Inventor John H. Dunlap

John H. Dunlap 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).

  • Publication number: 20020114439
    Abstract: A telephone gateway device that operates in a manner transparent to calling and called parties is provided. The gateway includes a port for connecting one or more POTS devices, a port for connecting to a local PSTN, a modem, and a network interface. The gateway selectively routes toll calls made on an attached POTS device over a computer network, such as the internet, via either the modem or the network interface. Methods of routing and facilitating telephone connections over a computer network are also provided.
    Type: Application
    Filed: January 22, 2002
    Publication date: August 22, 2002
    Inventor: John H. Dunlap
  • Patent number: 4608709
    Abstract: A method and apparatus for measuring the outer diameters, ovality and eccentricity of the finish of a container is disclosed. The invention can be practiced in either a one-camera or a two-camera embodiment. The one-camera embodiment comprises means for illuminating the finish with a collimated beam of light to produce a transmitted beam containing a shadow of the finish and means for focusing the transmitted beam containing the shadow of the finish to produce the image thereof. The apparatus further comprises a line-scan camera for periodically scanning sequential segments of the image from one periphery to the other periphery as the container rotates for providing a plurality of pixel signals for each scan, and a data circuit responsive to the magnitudes of the pixel signals in each of the scans for counting the number of signals in the peripheries of the image to provide a left periphery count and a right periphery count for each scan.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: August 26, 1986
    Assignee: Owens-Illinois, Inc.
    Inventors: Robert C. Hedler, Robert D. Kohler, John H. Dunlap