Plural lead ball nut screw actuator

Details Plural lead ball nut screw actuator Plural lead ball nut screw actuator

1978-06-08

1980-07-08

Schroeder, Werner H.

Machine element or mechanism

Gearing

Directly cooperating gears

F16H 118

Patent

active

042111250

ABSTRACT:
Ball nut and screw in which the nut has a ball pickup and return fixture on either end, each providing arcuately spaced ball pickup and returns to and from the spiraling lands associated with plural lead helical ball tracks of the screw. With plural lead ball tracks, increased ball nut travel with at least the same capacity as a single lead ball nut and screw is provided. The ball pickup and return fixtures have ramps and spiraled ball tunnels that provide for the smooth circulation of the separate ball trains of the system.

REFERENCES:
patent: 3170336 (1965-02-01), Bohnhoff
patent: 3826153 (1974-07-01), Sheppard

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