Patents by Inventor Kai Nilsson

Kai Nilsson 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).

  • Press for hydrostatic extrusion of tubes and profiles
    Patent number: 4186582
    Abstract: The pressure medium used in the pressure chamber of a hydrostatic press is degassified in a degassing tank prior to delivery to the pressure chamber so as to improve the resistance of the pressure cylinder, or the liner inside of the pressure cylinder, to fatigue. The degassified pressure medium can be a mixture of recirculated pressure medium recovered after passage through the die extrusion hole and new pressure medium, such as castor oil.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: February 5, 1980
    Assignee: ASEA Aktiebolag
    Inventors: Tom Johannisson, Kai Nilsson, Rolf Sjoblom, Marja Widell