Patents by Inventor Elio Borradori

Elio Borradori 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).

  • Connector for rigid plastics pipes
    Patent number: 4095826
    Abstract: Connector for rigid plastic pipes comprises a central cylindrical member wherein the axial bore widens at its two opposite ends to form three portions of predeterminal length and of different diameters, there being provided at each end a pair of semi-circular locking inserts provided internally with suitable toothing, and forming a contractable cylindrical seat adapted to lock both axially and torsionally the pipe inserted therein.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: June 20, 1978
    Assignee: Endermill Anstalt
    Inventor: Elio Borradori