Patents by Inventor Petri Vuoristo

Petri Vuoristo 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: 6203895
    Abstract: The invention relates to wear resistant parts for process valves. The use of said parts can be particularly advantageous in the chemical and petrochemical industry, in the mining industry and in other processing industries. According to the invention, the wear resistant parts for process valves are characterized by a 50 to 500 &mgr;m thick coating applied by thermal spraying on the valve surfaces subjected to wear, particularly on the bearing and sealing faces. The coating is characterized by the fact that one or more cubic hard material phases containing Ti and/or Ti and a second metal and a metal binder phase can be demonstrated therein, and by the fact that when the coatings are rubbed against each other within a temperature range of from room temperature to 600° C., the friction coefficient is <0.6.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: March 20, 2001
    Assignee: Neles Controls Oy
    Inventors: Lutz-Michael Berger, Kai Laitinen, Petri Vuoristo, Tapio Mäntylä
  • Patent number: 6162276
    Abstract: The invention relates to a coating powder and method for its production. Said powder can be used in many technical fields, specially in machine and vehicle construction in chemical and petro-chemical installations. This coating powder has a hardmetal-like microstructure and consists of two cubic hard material phases, each of them representing a nucleus-external surface structure of a hard material particle. The hard material phase in the nucleus contains mostly Ti and C and the hard material phase in the external surface mostly Ti, a second metal and C, which are embedded in a binder phase containing at least one or more elements such as Ni, Co and Fe. According to the invention, said coating powder is characterized by the fact that no additional alloying element exists either in the hard material phase, in the binder phase or in both phases simultaneously.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: December 19, 2000
    Assignee: Fraunhofer-Gesellschaft Zu Forderung der Angewandten Forschung e.V.
    Inventors: Lutz-Michael Berger, Manfred Nebelung, Tapio Maentylae, Petri Vuoristo