Patents by Inventor John E. Perruzzi

John E. Perruzzi 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).

  • Spiral, tapered-land, journal bearing
    Patent number: 3981547
    Abstract: A journal bearing having circumferential grooves therein defining a spiral land. The leading edge of the land is indented either by being tapered or by having a Rayleigh step excised therefrom.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: September 21, 1976
    Inventor: John E. Perruzzi