Patents by Inventor Charles J. Derler

Charles J. Derler 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).

  • Utility tamper workhead
    Patent number: 4062292
    Abstract: A railroad track ballast tamper, operating on-track, having a workhead resiliently and pivotally supporting a pair of platforms on each side of each rail with tamping blades pivoted on each platform and vibration motors fixed to each platform. Lowering the workhead tilts the blades toward the rail because of the platform pivot locations, and actuators coupling the blades squeeze the blades toward the tie so as to tamp, with vibration and squeezing action, that region beneath the ties and under the rail.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: December 13, 1977
    Assignee: Jackson Vibrators, Inc.
    Inventor: Charles J. Derler