Patents by Inventor Raymond J. Swaim

Raymond J. Swaim 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).

  • Well derrick
    Patent number: 4585213
    Abstract: Well derrick in which the travelling crown block is operated by hydraulically operated linear actuators and a travelling block is operated by special reeving, the arrangement advantageously being such that the loads being handled bypass the tower of the derrick so that the cost of the tower can be reduced. The reeving system results not only in uniform and symmetrical force distribution relative to the crown block and travelling beam but also in a travel of the travelling beam twice the stroke of the linear actuators.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: April 29, 1986
    Assignee: Armco Inc.
    Inventors: Grady M. Slagle, Jr., Raymond J. Swaim