Patents by Inventor Carmelo Leoncini

Carmelo Leoncini 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 for obtaining a compound clamping ring and a compound clamping ring so obtained
    Patent number: 4140324
    Abstract: A clamping ring in a joint sleeve for pipes, with a compound structure comprising a metal tooth among synthetic material teeth on an inner surface of the ring. In this way said ring assures an efficient clamping effect, without the drawbacks met by hard metal rings with respect to synthetic material rings.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: February 20, 1979
    Assignee: F.I.P. Formatura Iniezione Polimeri S.p.A.
    Inventors: Piero Mulas, Carmelo Leoncini