Patents by Inventor Manfred Künze

Manfred Künze 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).

  • Cover having a wear-resistant surface and method for the production thereof
    Patent number: 8979422
    Abstract: The invention relates to a cast-iron cover fitted with at least one traffic-bearing surface which in turn comprises at least segment-wise a wear-resistant layer constituted by chilling the cast iron. Preferably the wear-resistant layer exhibits a Brinell hardness larger than 275 HBW but less than 350 HBW. A method of the invention furthermore relates to manufacturing a cast-iron cover, first manufacturing a shaped body. Then an activation layer is made within the shaped body. Cast iron is poured-in in a way to be at least partly chilled at a contact surface with the activation layer.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: March 17, 2015
    Assignee: MeierGuss Limburg GmbH
    Inventors: Manfred Künze, Stefan Weis, Peter Merkl
  • COVER HAVING A WEAR-RESISTANT SURFACE AND METHOD FOR THE PRODUCTION THEREOF
    Publication number: 20120263527
    Abstract: The invention relates to a cast-iron cover fitted with at least one traffic-bearing surface which in turn comprises at least segment-wise a wear-resistant layer constituted by chilling the cast iron. Preferably the wear-resistant layer exhibits a Brinell hardness larger than 275 HBW but less than 350 HBW. A method of the invention furthermore relates to manufacturing a cast-iron cover, first manufacturing a shaped body. Then an activation layer is made within the shaped body. Cast iron is poured-in in a way to be at least partly chilled at a contact surface with the activation layer.
    Type: Application
    Filed: October 12, 2010
    Publication date: October 18, 2012
    Applicant: MeierGuss Limburg GmbH
    Inventors: Manfred Künze, Stefan Weis, Peter Merkl