Patent ID: 8161849
Filing Date: 2012-04-24
Classification: B25B,Y10T

Abstract:
1. An improved torque limiting device for a power operated rotational driver comprising: a driven body having a proximate end with a socket engaging stud extending therefrom and a concave distal end with a central blind bore having at least one stabilizer ball outer race thereon and a series of inwardly tapering clockwise arced radial tracks that intersect an annular groove formed thereon; a drive body having a threaded distal end with at least one longitudinal broachway therein, a proximate end with a stabilizing stub shaft for engagement into said blind bore with at least one stabilizer ball inner race thereon, and a circular radial torque plate there between that extends normally from said body having a distal planar face, a convex proximate face matingly conformed to said driven body's concave distal end, and a series of counterclockwise arced radial slots formed therethrough; an adjustable linear thrust mechanism; a series of steel thrust balls; a series of steel stabilizer balls; and a housing; wherein said steel stabilizer balls reside in said outer and inner stabilizer ball races so as to connect said driven body to said drive body, and said linear thrust mechanism includes a torque adjuster plate threadingly engaged with said drive body's distal end and further includes a thrust disk bearing against said thrust balls which reside in said slots and bear against said tracks so as to rotationally engage said drive and driven bodies within said housing.