Patents by Inventor Atle Stlan Vaalana

Atle Stlan Vaalana 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).

  • Wear sleeve
    Patent number: 7028788
    Abstract: Wear sleeve for a drill pipe coupling (10), where a sleeve (18) is arranged in a drill pipe coupling on one of the two adjoining, coupled together drill pipes (12, 14) in a drill string, where the sleeve has an outer diameter that is larger than the outer diameter of the drill pipe coupling (10) and which comprises an inner continuous bore. The inner bore comprises a threaded section (22a) arranged for joining together with a corresponding outer threaded section (22) at the one end of the drill pipe coupling (10), whereupon the sleeve (18) is arranged to be securely fastened in the drill pipe coupling to form a wear sleeve.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: April 18, 2006
    Assignee: Tubular Protection Systems AS
    Inventors: Stein Strand, Per Gunnar Nilsen, Atle Stlan Vaalana
  • Wear sleeve
    Publication number: 20040173382
    Abstract: Wear sleeve for a drill pipe coupling (10), where a sleeve (18) is arranged in a drill pipe coupling on one of the two adjoining, coupled together drill pipes (12, 14) in a drill string, where the sleeve has an outer diameter that is larger than the outer diameter of the drill pipe coupling (10) and which comprises an inner continuous bore. The inner bore comprises a threaded section (22a) arranged for joining together with a corresponding outer threaded section (22) at the one end of the drill pipe coupling (10), whereupon the sleeve (18) is arranged to be securely fastened in the drill pipe coupling to form a wear sleeve.
    Type: Application
    Filed: December 1, 2003
    Publication date: September 9, 2004
    Inventors: Stein Strand, Per Gunnar Nilsen, Atle Stlan Vaalana