Patent ID: 6158720
Filing Date: 2000-12-12
Classification: B66F,F16H,Y10T

Abstract:
An anti-backlash nut assembly comprising:a first part having a central threaded portion positioned along a central axis and adapted to mate with the threads of a jack screw, and a collar portion coaxial with said threaded portion, said collar portion having an inner circumferential wall surrounding said threaded portion, said inner circumferential wall having at least one drive pin recess extending axially in said circumferential wall;a second part having a central threaded portion adapted to mate with the threads of said jack screw, and a boss portion coaxial with said second part threaded portion, said boss portion adapted for sliding engagement into said collar portion, said boss portion having an outer circumferential wall having at least one drive pin recess extending axially in said outer circumferential wall;said boss portion positioned within said collar portion with said at least one second part drive pin recess axially aligned with said at least one first part drive pin recess to define at least one drive pin channel; andat least one drive pin received in said at least one drive pin channel, said drive pin adapted to couple said second part to said first part to allow unified rotation movement of said first and second part and to permit axial displacement therebetween.