Patent ID: 7389709
Filing Date: 2008-06-24
Classification: F16H,H02K,Y10T

Abstract:
1. A reverse transfer system ball-screw, comprising: a nut having a cylindrical inner surface and having a ball recess extending into said nut from said inner surface; a screw arranged within said nut for rotational and axial movement relative thereto, said screw having a cylindrical outer surface arranged to face toward said nut inner surface and having a ball recess extending into said screw from said outer surface, said nut and screw ball recesses being complimentarily configured to define an endless ball path about said screw in which balls will be continuously recirculated when said nut and screw are rotated relative to one another; a plurality of balls in said ball path; and a rod connected to said screw for movement therewith; whereby relative rotation between said nut and screw will cause said screw and rod to move axially relative to said nut.