Ball screw and nut

Details Ball screw and nut Ball screw and nut

1978-02-22

1979-12-11

Husar, C. J.

Machine element or mechanism

Gearing

Directly cooperating gears

74441, 74459, F16H 118

Patent

active

041776909

ABSTRACT:
A ball screw and nut mechanism in which a preloaded train of balls travels through a closed circuit having an active portion and an inactive or return portion. The active portion is formed by convolutions of opposed helical grooves in the screw and the nut and a return tube on the nut defines the inactive portion. Inclined surfaces are formed on the lands between adjacent convolutions of the groove on the screw and partially unload the balls as the latter enter and leave the active portion of the circuit to prevent the balls from keystoning.

REFERENCES:
patent: 2959978 (1960-11-01), Boutwell
patent: 3369422 (1968-02-01), Sears
patent: 3665782 (1972-05-01), Loftus
patent: 3722312 (1973-03-01), Better et al.
Saginaw Steering Gear Division of General Motors Corp. Catalog, Sep. 1960, p. 16.

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