Patents by Inventor Dale Ricalton

Dale Ricalton 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).

  • Wellhead stuffing box for rotating rod string
    Patent number: 5791411
    Abstract: A tubular mandrel is provided as a sleeve around the portion of the rod string polish rod extending through the stuffing box housing. The mandrel is coupled to the polish rod so that they rotate together. Bearings stabilize the mandrel within the housing. Stationary rotary seal means are provided in the housing to seal against the now-stabilized mandrel. Leakage and seal wear are improved when compared with the prior art approach of using compressed packing in direct contact with the polish rod to provide the rotary seal.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: August 11, 1998
    Assignees: Highland/Corod Inc., Springer Machine Ltd.
    Inventors: Dale Ricalton, Raymond Rivard