Plural lead ball nut screw actuator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 8, 1980
Grant Date -
N/A
app pub date -
Jun 8, 1978
filing date -
Jun 8, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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