Patents by Inventor Robert A. Elliott

Robert A. Elliott 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).

  • Fluidic actuator scraper seal
    Patent number: 5303934
    Abstract: Dual "U" cup seals are utilized in conjunction with conventional seals as fluidic actuator shaft scrapers for actuators operating in contaminated environments. The seals are installed in serial spaced relation on the low pressure side of the conventional seals such that they scrape contaminants off of the shaft as well as seal against the ingress of contaminants to the high pressure seal area. The scraper configuration may also be of benefit in piston bore seal systems which operate in contaminated fluid environments.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: April 19, 1994
    Assignee: General Electric Company
    Inventor: Robert A. Elliott