Patents by Inventor James Eubank Armstrong

James Eubank Armstrong 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).

  • Platform crane
    Patent number: 4081932
    Abstract: A mobile crane for use on an offshore oil well platform, comprising parallel base beams adapted to span the capping beams of the platform, and a pedestal and a rotating upper works movably mounted on the base beams. A method is described for erecting a workover rig on the offshore platform by means of the crane, and for expeditiously erecting workover rigs on a plurality of platforms in succession.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: April 4, 1978
    Assignee: Pool Company
    Inventor: James Eubank Armstrong