Patents Represented by Attorney J. R. Halvossen

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  • 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