Patents by Inventor Richard J. Robbins

Richard J. Robbins 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).

  • Upward tunneling
    Patent number: 4009909
    Abstract: A boring assembly is advanced upwardly by thrust rams acting on a column guided traveling cross frame connected to the power tunneler from below by a non-rotating sectional support column. The support column is anchored to a holding table situated underground above the thrust ram while sections are being added to or removed from it. The boring assembly is driven by either a hydraulic motor housed in the cross frame, via a sectional drill stem housed within the support column, or by a hydraulic motor housed directly within the boring assembly.
    Type: Grant
    Filed: January 10, 1975
    Date of Patent: March 1, 1977
    Assignee: The Robbins Company
    Inventors: Richard J. Robbins, Hans A. Adami
  • Utility light
    Patent number: D250141
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: October 31, 1978
    Assignee: Engmans. Inc.
    Inventors: Richard E. TenEyck, Richard J. Robbins, Robert W. Fee, Michael L. Meister, John R. Kraft