Patents by Inventor Christiaan A. Stroo

Christiaan A. Stroo 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).

  • Method of interconnecting several parts, such as a piece of tubing and a plate, a tube or similar body
    Patent number: 4260094
    Abstract: The method of using the frictional heat and pressure produced by a rapidly rotating non-cutting piercing tool to weld two or more parts, such as a piece of tubing on one hand and a plate, a tube or another body having locally a relatively thin wall on the other hand, together, to which end said piercing tool is forced through the two or more parts after the latter have been placed in the exact relative positions.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: April 7, 1981
    Assignee: Technisch Handels-en Adviesbureau van Geffen B.V.
    Inventor: Christiaan A. Stroo