Plural lead ball nut screw actuator

F - Mech Eng,Light,Heat,Weapons – 16 – H

Patent

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74/207

F16H 25/22 (2006.01)

Patent

CA 1116439

Abstract of the Disclosure 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. CRW/jar

325185

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