Patents by Inventor Thor Arne HÅVERSTAD

Thor Arne HÅVERSTAD 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).

  • ROD LOCKING APPARATUS
    Publication number: 20180252060
    Abstract: A rod locking apparatus includes a housing which includes a first tubular passage and a second tubular passage which are arranged to intersect with each other, the first tubular passage including a serrated locking surface, and a wedge piston slidably arranged in the first tubular passage. The wedge piston includes a front side which includes a wedge surface which engages an end surface of a rod to be locked, and a serrated rear side which engages with the serrated locking surface.
    Type: Application
    Filed: August 15, 2016
    Publication date: September 6, 2018
    Applicant: Electrical Subsea & Drilling AS
    Inventors: Thor Arne HÅVERSTAD, Erik NORBOM, Bolie C. WILLIAMS, III, J. Gilbert NANCE, John L. ALSUP, Marion E. EAGLES