Anti-friction nut/screw drive

Details Anti-friction nut/screw drive Anti-friction nut/screw drive

1984-06-13

1986-03-18

Staab, Lawrence J.

Machine element or mechanism

Gearing

Directly cooperating gears

74 8915, 744248R, 74441, F16H 118, F16H 120, F16H 2702, F16H 2902

Patent

active

045760578

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.

REFERENCES:
patent: 2938400 (1960-05-01), Gondek
patent: 2951390 (1960-09-01), Martens et al.
patent: 3003362 (1961-10-01), Martens
patent: 3004445 (1961-10-01), Mondon
patent: 3164029 (1965-01-01), Martens
patent: 3861226 (1975-01-01), Stanley
patent: 3884090 (1975-05-01), Dock
patent: 3965761 (1976-06-01), Stanley
patent: 4033194 (1977-07-01), Stanley
patent: 4048867 (1977-09-01), Saari
patent: 4050319 (1977-09-01), Stanley
patent: 4074586 (1978-02-01), Nussbaum
"Nomograph Aids Solution of Worm-Thread Profiles", American Machinist, pp. 113-116, Oliver Saari, Jul. 5, 1954.
"How to Calculate Exact Wheel Profiles for Form Grinding Helical-Gear Teeth", American Machinist, pp. 172-175, Oliver Saari, Sep. 13, 1954.

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