Patents Assigned to Walter Beal
  • Patent number: 4532988
    Abstract: A plurality of sucker rod scrapers are securely attached in spaced apart relationship to a length of sucker rod for scraping paraffin deposits from the interior of a tubing string, thereby obviating obstruction to the flow of oil therethrough by maintaining a satisfactory effective flow area within the tubing string. The scrapers each have a spiraled scraping surface wound helically about the sucker rod and attached at each opposed end thereof by the provision of a clamping member which includes a U-band and a heat shield. The U-band has confronting marginal edge portions which overlap the edge portions of the heat shield. The heat shield has a slot formed centrally therein for receiving a tab located at either of the opposed ends of the spiraled scraper. The confronting edges of the U-band are welded to one of the marginal opposed ends of the scraper, while the heat shield prevents the metal of the sucker rod being elevated to a temperature which changes the characteristics thereof.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: August 6, 1985
    Assignee: Walter Beal
    Inventor: Alvin E. Hickman