Patents by Inventor Oliver Saari

Oliver Saari 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).

  • Anti-friction nut/screw drive
    Patent number: 4576057
    Abstract: An improved nut-and-screw type device for converting rotary input to linear output. The device includes an involute-helicoidal screw, a nut assembly including a plurality of annular ring and groove rollers conjugate to said screw; a freely rotating ring having internal grooves conjugate to said roller; and bearing means engaging said rotating ring and the outer housing of said nut assembly thereby providing rolling line contact for transmission of the major forces.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: March 18, 1986
    Assignee: Illinois Tool Works Inc.
    Inventor: Oliver Saari