Differential Bias Mechanism for Leadscrew Drives
Original Publication Date: 1982-Jul-01
Included in the Prior Art Database: 2005-Feb-09
Disclosed is apparatus for allowing the transfer of rotary screw motion to linear carrier motion with high and equal efficiency in either direction. This is accomplished without backlash, during steady state operation and without transfer of transfer screw motion to the carrier, which normally would be generated by leadscrew eccentricity or runout. The differential bias mechanism hereinafter disclosed, and as shown schematically in the drawing, permits the leadscrew followers or nuts to float and seek their own engagement with the screw, thereby eliminating imposed constraints and eccentric loading upon the screw.