Patents by Inventor Richard A. Rozanc

Richard A. Rozanc 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).

  • Mine roof support plate bolt
    Patent number: 4940365
    Abstract: A mine roof support plate bolt formed from an elongated rod has a head and flange at one end, and a helical channel adjacent the other end, the rod having a threaded section adjacent the channeled section and an expansion anchor engaged on the threaded section. The channeled section of the rod has a length greater than the length of the expansion anchor such that a major portion of the channeled section is exposed regardless of the positioning of the expansion anchor on the threaded section.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: July 10, 1990
    Assignee: Ground Control, Inc.
    Inventor: Richard A. Rozanc