Patents by Inventor Giancarlo Tramezzani

Giancarlo Tramezzani 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).

  • Self-locking nut
    Patent number: 5160227
    Abstract: In a self-locking nut including a threaded upper collar equipped with longitudinal slots in U-shape defining in collar a plurality of circular arc segments compressed by a helical external spring, the spring is subjected to a hot-galvanizing treatment and is provided in harmonic spring steel if it operates below 250.degree. C., while it is provided in stainless spring steel if it operates above 250.degree. C., and the nut, provided in stainless steel if it operates at high temperatures, is subjected to an electrolytic coppering treatment.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: November 3, 1992
    Assignee: Alian International Aktiengesellschaft
    Inventor: Giancarlo Tramezzani
  • Self-locking unit
    Patent number: 4893977
    Abstract: An improved self-locking nut comprising a threaded upper collar provided with longitudinal slots defining in the collar a plurality of circular arc segments compressed by a helical external spring. The slots may widen upwardly in V or U-shape to prevent the segments from contacting one another.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: January 16, 1990
    Assignee: Alian International AG
    Inventor: Giancarlo Tramezzani