Patents by Inventor Winfried Dickhoff

Winfried Dickhoff 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 making a reinforcement for vehicle doors
    Patent number: 4210467
    Abstract: A tubular reinforcing element for the interior of vehicle doors is made from a steel tube having a carbon content of 0.14-0.18%, 0.15-0.30% silicon, 1.60-1.80% manganese, 1.90-2.10% chromium, 0.45-0.60% molybdenum and at least 0.015% aluminum. This tube is annealed at 900.degree.-930.degree. C. and then aircooled. Thereafter the portions of the tube which are to be deformed are heated to above the temperature of the alpha-gamma phase change (A.sub.3 on the iron-carbon equilibrium diagram), then deformed to the desired shape and aircooled. All percentages are by weight.
    Type: Grant
    Filed: November 14, 1978
    Date of Patent: July 1, 1980
    Assignee: Benteler Werke Aktiengesellschaft
    Inventors: Stefan Klatzer, Winfried Dickhoff