Patents by Inventor Robert L. Swinehart

Robert L. Swinehart 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).

  • Patent number: 4088560
    Abstract: A device for holding a post-type earring during its receipt of an ornamental coating as by electrolytic deposition including a body having electrically conductive insert positioned therein, which insert includes an internal chamber with which aligned openings in the insert and body communicate. A resilient plug having an elongated bore is positioned within the body opening for receipt of the post of a post-type earring to mask the same from receiving an ornamental coating. Lower portions of the post project into the chamber and spring means are further included therein for assuring that electrical contact is made between the insert and the earring.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: May 9, 1978
    Assignee: P.N. Patrick Company, Inc.
    Inventors: Robert L. Swinehart, Paul N. Patrick