Patents by Inventor Arne Matzel

Arne Matzel 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).

  • Core drilling apparatus and method for converting between a core drilling assembly and a full-diameter drilling assembly
    Patent number: 11131147
    Abstract: A core drilling apparatus and a method for converting between a core drilling assembly and a full-diameter drilling assembly by means of a lifting device and a coring drill head with closure elements and integrated cutting implements. The lifting device comprises a release mechanism that when activated, releases forces acting on the lifting device, such that when the lifting device is in an upper position when activated, the lifting device lowers an inner tubing thereby pushing the closure elements of the drill head in an open position, and when the lifting device is in a lower position when activated, the lifting device lifts the inner tubing from the closure elements such that the closure elements is in a closed or partly closed position.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: September 28, 2021
    Assignee: Coreall AS
    Inventors: Per Erik Berger, Alf Erik Berle, Arne Matzel