Patents by Inventor Ake Hassellof

Ake Hassellof 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).

  • Patent number: 4638540
    Abstract: A method for manufacturing a railway wheel with a base material, a more wear-resistant layer at the part of the flange facing the wheel tread, and a layer in the tread which gives a high friction between wheel and rail which is relatively independent of the weather. The method is characterized in that a prefabricated component is manufactured from members of the base material and from the more wear-resistant materials, respectively, which members are given such a shape as to fit closely against each other, and which, after turning or other machining and cleaning from oxide and other impurities, are put together and welded together at the outer surfaces of the component in such a way that admission of air between said members is prevented, the component thereafter being hot-worked to form a finished or near finished wheel blank with a good bond between the different members defining the tread and/or flange regions thereof.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: January 27, 1987
    Assignee: ASEA Aktiebolag
    Inventors: Ake Hassellof, Carl-Gustaf Lenasson, Lennart Nordhall