Patents by Inventor Steven P. Ehrhardt

Steven P. Ehrhardt 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).

  • Adaptive timing in-motion checkweigher
    Patent number: 5300736
    Abstract: A method and apparatus for an in-motion weighing system which includes a package conveyor, a weigh pan, a package detector positioned adjacent to the conveyor and upstream from the weigh pan, a timer for determining the time required for a package to pass by the package detector, means for storing the time required for a point on the conveyor to transition the weigh pan, means for subtracting the package passing time from the weigh pan transition time for establishing a read scale window, and a means for measuring the average weight of a package on the weigh pan during the read scale window.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: April 5, 1994
    Assignee: Hi-Speed Checkweigher Co., Inc.
    Inventor: Steven P. Ehrhardt