Patents Assigned to William S. Shamban
  • Fluorination of articles molded from elastomers
    Patent number: 5274049
    Abstract: A method of reducing the static and dynamic coefficients of friction and improving the wear life of thermoset elastomeric articles is disclosed. The elastomeric articles are fluorinated in the presence of a hydrogen fluoride scavenger under conditions sufficient to reduce said friction coefficient and improve said wear life, without promoting degradation of the tensile properties of the articles.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: December 28, 1993
    Assignee: William S. Shamban
    Inventors: Ronald E. Zielinski, Mark J. Seabury
  • Fluorination of articles molded from elastomers
    Patent number: 5214102
    Abstract: A method of producing fluorinated elastomeric articles having reduced coefficients of friction, improved wear life and improved resistance to fluid permeability. A thermoplastic elastomeric article is exposed to gaseous fluorine in a reactor vessel under reaction conditions sufficient to create a fluorinated material on the external portions of the elastomeric article, which fluorinated material extends inwardly into the matrix of the article, without promoting degradation of the tensile properties of the article.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: May 25, 1993
    Assignee: William S. Shamban
    Inventors: Ronald E. Zielinski, Mark J. Seabury